Introduction
 
 
1. Company Profile
2. General Product Range
3. Design & Engineering Services
4. Centre of Excellence
 
 
Vibration, Shock & Seismic Control
 
 
1. HVAC Product Range
2. Vibration & Seismic Isolation of Building & Equipments
3. Theory
 An Introduction to Vibration Isolator Selection
 Fallacy and Fact
 Selection of Vibration Isolation Systems
 Determining Isolator Deflection
 Shock & Flexibly Mounted Machines
 
 
 
Application Data Sheets
 
 
 
1. Projects
 Isolation of Airconditioning Machinery Installed at Upper Floor
 Rooftop Isolation System for Buildings and Medical Centres
 Dubai- Apartment Building
 Fans and Blowers
 Centrifugal Fan / Blower (Belt Driven)
 Fan & Air Handling Unit
 Air Handling Unit (Wall Mounted)
 Chiller
 Centrifugal Chiller
 Refrigeration Package Chiller (Reciprocating Compressor)
 Cooling Tower
 Pumps
 Closed Coupled Pumps
 Centrifugal Pumps
 Seismic Control
Buildings & Equipments
 
1. Building on Seismic Bearings
2. Spring Viscous Damper, Type: SVD
3. Seismic Isolation of Equipments
4. Seismic Snubber
5. All Directional Seismic Snubber, Type: SSB
6. Seismic Restrained Buffers, Type: SRB
7. Seismic Restrained Spring Mounts, Type: SRSM
8. Seismic Open Restrained Spring, Type: SORS
9. Universal Expansion Joints for Seismic Base Isolated Buildings,
Type: RMEJ.UD
10. Gimbal Expansion Joints for Seismic Base Isolated Buildings,
Type: RMEJ.GD
 
Spring Mountings
Damper Systems
Inertia Basis
Rails
 
1. OEM
2. Open Spring Mountings, Type: OSB, OS25 & OS50
3. Enclosed Spring Mountings, Type: ES / ECS
4. Open Restrained Spring Mountings, Type: ORS
5. Restrained Spring Mountings, Type: RSM25 & RSM50
6. Cup Spring Mountings, Type: CS
7. Housed Spring Mountings, Type: HS
 Housed Spring Mountings Types
 Mounting Arrangement - Steel Bases
 Mounting Arrangement – Reinforced Concrete Bases
8. Spring Damper Systems, Type: SDS
9. Pre- Compressed Spring Damper, Type: PSD - 30
10. Open Spring Damper Unit, Type: OSD2
11. Open Spring Damper Unit, Type: OSD4
12. Combined Spring Damper, Type: CSD
13. Floating Inertia Pouring Base Frame, Type: IPF
 Installation Instruction
14. Rails
 
Rubber
Pads & Mountings
 
1. Turret Rubber Mounts, Type: RM
2. Circular Vibration & Shock Isolators, Type: CMS
3. Coniflex Rubber Mounting, Type: CFX
4. Stabiflex Vibration & Shock Isolators, Type: STB
5. Flexifloat Rubber Mounting, Type: EFM
6. Mobiflex Mounting, Type: MOB
7. Fleximount Rubber Isolator, Type: FM
8. Genflex Rubber Mounting, Type: GF
9. Fleximount / Genflex Rubber Isolators
10. Studded Vibration Isolating Pads, Type: SFP 30
11. Square Cell Pads, Type: SC
12. Compression Stud Pad, Type CSP: 15
13. Studflex Vibration Isolation Pads, Type SFH & SFS
 Expansion Joints
Rubber-Metallic-PTFE Lined
SS Sprinkler Connector
 
 
1. Rubber Expansion Joints
 TISA
 Single Arch
 SRSA
 Single Sphere
 SRDA
 Double Sphere
 SUDA / SFDA
 Flexible Rubber Union Connector
 
2. Metal Expansion Joints With Floating Flanges
3. Metal Expansion Joints With Fixed Flanges, Type: RMEJ – WF
4. Metal Expansion Joints With Floating Flanges, Type: RMEJ – FF
5. Metallic Flexible Connector With Union Ends, Type: RMFC – TU
6. PTFE EJ
 PTFE Lined Rubber Expansion Joints, Type RTREJ
 PTFE Lined Metal Expansion Joints, Type RTMEJ
7. Control Unit
8. Typical Piping Layouts
 Heating, Ventilating and Air Conditioning
 Typical Piping Layouts
 Typical Installations
 Without Control Units
9. Installation And Maintenance
10. Pressure Norms and Drilling standards
11. Conversion Data
12. Flexible SS Sprinkler Connector, Type RFSC
 
 
Flame Resistant
Flexible Duct Connectors
 
 
1. Flame Resistant Flexible Duct Assembly
2. Flame Resistant Flexible Duct Connectors, Type RFDC
3. Properties of Coated Fiber Glass Fabric
 
 
Resilient Rubber & Spring Hangers
 
 
1. Spring & Rubber Hangers, Type: SH & RH
2. Rubber Hanger, Type: VMH/D
3. Resilient Hangers, Type: MUP
4. Rubber Hanger Side Wall System
5. Rubber Hanger Mode of Installations
6. Rubber Hanger, Type: SAM/D
7. Spring and Rubber Composite Hanger, Type: SRC
8. Open Spring Hanger, Type: OSH
9. Spring Hangers without connector, Type: SH-WC
10. Spring Cushion Hanger, Type: SCH
 PIPE
Riser-Anchor-Support- Seal
 
 
 
1. Pipe Riser Guide
2. Acoustical Pipe Anchor Type: APA
3. Resilient Pipe Support
4. Acoustical Pipe Seal Type: APS
 
 
 
Architectural Isolation
Floating Floors- Walls- Ceiling- Room
Jack up Mounts
 
 
 
1. Architectural Isolation
2. Isolated Floors, Walls & Ceiling System
3. Floating Floor
4. Floating Concrete Floor
 Typical Mode of Installations
 Resilient Support Pads
 Sectional Detail of internal Floating Floor Periphery
 Typical Installation Using Ready - to - use Floating Floor Panels
 Noisy Mechanical Equipment Room
 Support Channel For Shuttering Profile
5. Jack-up Floor System, Type: JNM
 Installation Instructions
6. Floating Wood Floor
7. Floating Walls & Partitions
8. Floating Wood Floor Support, Type: WFS
9. Floating Walls
 Masonry Walls
 Masonry / Dry Wall Construction Resilient Wall Sway Brace
10. Horizontal Restrain, Type: SBDN
11. Resilient Wall Sway Brace, Type: SBCT
12. Resilient Wall Sway Brace, Type: SBCS
13. Masonry Walls Resilient Wall Support, Type: WSP
14. Restraining Angle Bracket, Type: RAB
15. Floating Ceiling
16. Isolated Floating Room
 Reverberation Chambers at Arai
 Hemi Anechoic Chamber and Dynamometer Test Bed Room at Arai
17. Installation of
 Reverberation Chambers at Arai
 Hemi Anechoic Chamber and Dynamometer Test Bed Room at Arai
18. Isolated Machinery Room
Company Profile Vibration Shock Seismic Control
GREATER NOIDA PLANT

NOIDA OFFICE

NOIDA PLANT
UPCOMING CORPORATE OFFICE AT NOIDA

India's first
Seismic Base Isolated
Commercial Building

RESISTOFLEX was founded in 1947 by RESISTOFLEX offers a most comprehensive

Late Mr. R.K. Jain after graduating in range of products for :
Electrical & Mechanical Engineering from v Vibration, Shock & Noise Control
BHU, India. v Flexible Piping Systems
v Air Springs & Suspension Systems
He was joined by Mr. Ratish Jain, B.Tech v Seismic Base Isolation Systems
& Silver medallist from IIT Delhi. He v Seismic Restraint Systems
forged several alliances with globally
acclaimed companies in related fields. RESISTOFLEX offers complete engineering
Further RESISTOFLEX was co-opted to the services which includes : Diagnostic
Mechanical Vibration and Shock Sectional Investigation, Technical Analysis, System
Committee of Bureau of Indian Standards Design, Supervision of Installation,
(BIS). Performance Evaluation & Post Monitoring.
RESISTOFLEX has advanced computer Nearly one million products are made on
programs and decades of experience to floor area of over 130000 sq. ft. in 4
design and recommend the most efficient modern plants equipped with latest
and economical isolation system for manufacturing and dynamic test facilities.
applications as diversified as passive
insulation of Delicate Instruments and Many products are regularly exported to
active isolation of massive Forging U.K., France, Germany and Middle East.
Hammers.

OUR COLLABORATORS

CONTITECH – CONTINENTAL, GERMANY : AIR SPRINGS &

SUSPENSION SYSTEMS FOR ROAD AND RAIL VEHICLES,
PNEUMATIC ACTUATION AND VIBRATION ISOLATION

CHRISTIE & GREY, ENGLAND : SPRING ISOLATORS FOR HVAC

AND HEAVY MACHINERY

SOCITEC, FRANCE : WIRE ROPE ISOLATORS FOR DEFENCE,

AEROSPACE AND RAILWAYS

KTI, GERMANY : MODULAR STEEL HELICAL SPRING ISOLATORS

COMBINED WITH VISCOUS & ELASTIC –PLASTIC-VISCOUS
DAMPER.

VIKRAM SARABHAI SPACE CENTRE : IN-FLIGHT SILICONE

SHOCK & VIBRATION ISOLATORS

IIT ROORKEE, EARTHQUAKE ENGINEERING DEPARTMENT :

DEVELOPMENT OF SEISMIC BASE ISOLATION SYSTEMS AND
SEISMIC RESTRAINT SYSTEMS.

DR. AGOSTINO MARIONI : BRIDGE BEARINGS & SEISMIC

BASE ISOLATION SYSTEM FOR BUILDINGS
RPL 310 LGC MAR 16

B -103, SECTOR-5, NOIDA - 201 301 Tel.: (0120) 2420321, 2420322, 24220315
Registered Office : B -15, Friends Colony (West), New Delhi - 110 065 Corporate Identity Number : U74899DL1984PTC019098
E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364
 
 
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Design & Engineering Vibration Shock Seismic Control

SERVICES

COMPUTERISED SYSTEM FOUNDATION DESIGN &

ANALYSIS FOR MACHINES : FINITE ELEMENT ANALYSIS

VIBRATION & SHOCK ANALYSIS * FEM IDEALISATION USING PLATE /

IN ALL SIX MODES OF FREEDOM BRICK ELEMENTS
* POSITIONING OF ISOLATORS AND
CG LOCATION UNDER STATIC & DAMPER BELOW FOUNDATION
DYNAMIC CONDITIONS * FREE AND FORCED DYNAMIC ANALYSIS
* ESTIMATION OF AMPLITUDES &
COMPUTING DYNAMIC LOADS DUE ISOLATION EFFICIENCY
TO MACHINE IMBALANCE & FAULTY * TRANSIENT RESPONSE THROUGH
OPERATING CONDITIONS RESONANCE ZONES
* STRENGTH ANALYSIS
IDENTIFYING PRINCIPAL PLANS OF * COLOUR GRAPHIC MODELLING AND
VIBRATIONS & SHOCK LOADS STRESS COUNTERS
* PREPARATIONS OF GA & R/F DRAWINGS

COMPUTERISED ISOLATOR SUB-STRUCTURE DESIGN &

DESIGN & SELECTION FEM ANALYSIS

BASED ON REQUIRED ISOLATION * FEM IDEALISATION USING BEAM

EFFICIENCY ELEMENTS

TO MEET PERMISSIBLE AMPLITUDE

& TRANSMISSIBILITY * FREE AND FORCED DYNAMIC ANALYSIS

AS PER CLIENTS REQUIREMENTS /

GOVERNING CODES OF PRACTICE * MODE SHAPE PLOTS

POSITIONING OF ISOLATORS & DAMPERS

* CHECKING OF SUB-STRUCTURE
STIFFNESS

SUPERVISION OF INSTALLATION

PERFORMANCE EVALUATION
RPL 320 LGC FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

CENTER OF EXCELLENCE
Certified by Defence

Not a Self Proclamation

Resistoflex, NOIDA
have been recognized as a
Center of Excellence on Shock Mounts.
Commander – QAO
Warship Equipments

Vibration Shock Seismic Control

 


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 ROOF TOP EQUIPMENTS

FLOATING FLOOR

SERVICE FLOOR

BASE ISOLATION PIPELINE

PLANT ROOM
An Introduction to
Vibration Isolator Selection
The Purpose of Isolators This equation can be plotted as shown in Figure 2 and it may be
seen when 2 = k/m force transmission becomes infinite.
a) To reduce the transmission of forces from the
mounted equipment to the supporting structure. This is known as the state of resonance when the oscillation
b) To protect sensitive equipment from the motion of the amplitude would also be infinite without any damping. The other
supporting structure. curves shown on this plot show the effect of adding damping such
as provided by natural rubber or fluid filled dampers.
Disturbances maybe steady state oscillations, non-
repeating transients or a combination of both.

How Vibration Isolators Work

TRANSMISSIBILITY
At present virtually all isolators are passive using steel
springs, rubber mouldings or air bellows to form the Figure 2
flexible elements. They absorb energy in one part of an
oscillation and give it back in another. Thus energy is not
dissipated except for a small amount of heat generated by
internal (or material) damping. The force transmitted is that
required to dynamically deform the isolators.

A real machine on flexible mounts may be idealized as

FORCING FREQUENCY
shown in Figure 1. RATIO NATURAL FREQUENCY

SINGLE DEGREE OF FREEDOM MODEL Rather than transmissibility it is common to quote isolator
efficiency which is given by:

Efficiency = (1 - T) x 100 %

The efficiency appears to approach 100% as the forcing

frequency increases but in the real situation other factors such as
Figure 1 flexibility in the supporting structure and isolating material
standing waves result in a practical limit of about 97 – 98% for
most types of isolator.

Natural Frequency and Static Deflection

If displaced from equilibrium and released, an isolated mass will

oscillate freely as its natural frequency. In a theoretically
RIGID FOUNDATION
undamped system, this oscillation will continue indefinitely. A rigid
BEWARE: This only works in two dimensions (up/down mass freely suspended on an isolator system will in reality have
and time). six natural frequencies, one for each degree of freedom of motion
as shown in Figure 3.
Force transmissibility is the ratio of the peak force required
to dynamically deflect the isolator to the force required to
accelerate the mass during each oscillation. Damping
forces are usually small and are ignored for the moment.

This simple equation may assist.

Figure 3
T = 1/  (1 - 2 . m/k)2

Where:

Viscous damping may be incorporated in the

equation using a damping ratio (C) as follows:
These frequencies are not usually apparent on must
machines unless excited during start- up or shutdown. A
T = 1/  (1 -  . m/k) + 4.C . .m/k proper design should ensure that normal operating speeds
2 2 2 2

and harmonics avoid resonant conditions.

Natural rubber materials show internal friction which may BEWARE: Many engineers may only analysis motion in the
be approximated to viscous damping with a ratio of vertical mode. Can you be sure that other natural
C = 0.05. If C = 1 there is a condition known as Critical frequencies are not lying in wait? If the body itself is not truly
Damping, when a mass if displaced and released will just rigid, then the whole body motion may be affected by internal
not overshoot equilibrium. resonances within its own structure.

licensed in 1992 by

Vibration Shock Seismic Control

For a single degree of freedom system of Figure 1, the The Effect of Mass
natural frequency is a function of the static deflection under
the weight due to gravity. Figure 4 shows this relationship. Why do we sometimes add inertia bases or other extra mass
when isolation efficiency is mainly a function of isolator
deflection? See Figure 6.
THE EFFECT OF MASS

Figure 6

Figure 4

BEWARE: Real isolating elements may change stiffness

with varying deflection, temperature, vibration amplitude and
frequency. Dynamic stiffness is the rate of change in spring
force with a change in deflection during the oscillation. a) For Static Stability: A light weight machine on soft springs
may suffer unacceptable displacement due to the action of
The natural frequency plot should be used with an equivalent external forces. E.g. water pump pipe pressure or manual
static deflection based on the dynamic stiffness for the operation of an isolated micro balance.
particular operating condition being considered. b) To Reduce Vibration Amplitudes: For many machines, the
internal forces would create large oscillating displacements or
Three Dimensions, Coupled, Modes and Higher accelerations capable of damaging the machine or its flexible
connections, for example, reciprocating air compressors and
For all but the simplest of applications, the more complex power station diesel generating sets.
systems benefit from consideration of the various modes of c) To Increase Stability under Shock: Tall narrow devices
motion and the effects of multiple forcing excitations, any exhibit much coupling of rotational and linear modes of motion
one of which can impair operation. giving rise to large displacement responses to earthquake or
explosive inputs. A lower centre of gravity can greatly reduce such
Consider a hydraulic power unit mounted on four springs responses, for example electrical cabinets, chillers, bunk beds.
beneath its base being excited by the deck moving
horizontally due to some transient condition e.g. collision. When is Simple Theory Enough?
See Figure 5.
a) Experience and Good Practice: If the application is straight
forward and the isolator and similar machines have been
mounted on similar flexible mountings many times, then it is a
waste of the engineer's time and the client's money to reinvent the
wheel every time.
Figure 5 b) Simple Problems: If a machine is inherently stable, runs at a
speed more than three times its vertical natural frequency and is
well away from a critical area, few difficulties should arise from a
more basic development method.

BE AWARE: Our computer analysis methods permit relatively

inexpensive calculation of many factors giving much more
Initially, the springs will shear creating a horizontal force on confidence in the final installation than is possible with basic
the unit base. A rotation will be induced as the acceleration of selection methods. For many applications, data is not available
the centre of gravity forms a couple with the force and if small initially for analysis or the specification may be imprecise but this
asymmetries exist other rotational motions may start. Soon, should not necessarily preclude proper consideration and many
the motion of the unit will be a complex mixture of oscillations factors other than vibration characteristics may be present in the
in each of the three orthogonal planes and directions. design. We would expect to consider the effects of fatigue,
corrosion, creep, ease of installation and maintenance, low and
The creation of motion in one mode from that in another is high temperature properties and the life expectancy of the
termed “coupling” and is a property of the mechanical isolation materials.
system. It is independent of the excitation.
Efficient Vibration and Shock Isolation results in:
By the use of symmetry it is possible to design system
whereby some modes can be decoupled or coupled in pairs Longer life of structures.
permitting a simpler mathematical analysis and a more Lower installation and foundation costs.
easily manipulated design. Increased production.
More efficient plant layout.
Computers are used to model and calculate the responses of Less operator fatigue.
such systems which may include a number of masses Reduced maintenance costs.
connected by many flexible elements. Improved quality of work.
Better environment.
licensed in 1992 by

Vibration Shock Seismic Control

Fallacy and Fact Vibration Shock Seismic Control

ON VIBRATION ISOLATION

Vibration Isolation is only a part time concern of most designers and engineers. The subject, however,
is a complex one, and we have found that a significant number of popular fallacies have evolved. These
can be misleading, or even mystifying, to someone who only occasionally is faced with the problem of
controlling dynamic disturbances.
Actually, vibration control is a precise science which follows logic and physical laws. A clearer
understanding of it will promote more efficient application of its principles and techniques, and
improve overall engineering competence wherever products are exposed to hostile dynamic
environments.
Presented here are the more common fallacies, along with the facts that properly apply.

FALLACY : Isolation can be achieved without FALLACY : The terms "damping: and "isolation"
permitting relative motion between the are synonymous.
supported body and vibration source.
FACT : Damping controls system response at or near
FACT : The Only way to reduce vibration transmitted resonance. Damping is accomplished by converting
from a vibration source to the supported body is to mechanical energy to heat, effectively removing the
permit relative motion. This is the function of the energy from the system. At or near resonance, damping
vibration isolator. The more isolation required, the (or dissipation) is the only means of controlling motion
more relative motion needed. because the other two factors affecting system
response, mass and stiffness, cancel at each other out.
Isolation is the reduction of magnitude of force or
amplitude transmitted from equipment to its support.

FALLACY : Isolators alter the frequency of a sinusoidal

vibration.

FACT : Isolators may change the phase angle

between a sinusoidal vibratory input and the vibratory
response of the supported body, but do not alter the
frequency of excitation. In the isolation range of
the transmissibility curve, the phase angle shift is 180°
for an undamped system.

FALLACY: Isolators reduce the amplitude of a

vibration source.

FACT : Isolators control the effect, not the cause.

They reduce transmission of vibration from a
vibration source to the attached structures or
systems.

FALLACY : Spring rate of an elastomeric mounting

can be determined by durometer.
FALLACY : Close stiffness control is not important.
FACT : Durometer is a measure of elastomer
hardness. Knowing the durometer of an elastomer, FACT : Stiffness control of an elastomeric mounting can
however, make it possible to predict stiffness or and should be maintained to meet performance
dynamic characteristics. requirements of a specific application. RESISTOFLEX
normally controls mounting stiffness within ± 15%.
 Vibration Shock Seismic Control

FALLACY : Natural and synthetic rubbers are inter- FALLACY : Shock and vibration requirements can
changeable across the board. be fulfilled independently of each other.
FACT : Each basic polymer has its own specific
characteristics which vary in differing degrees from
those of other polymers. Materials can be added FACT : Generally, once the shock requirement for a
which greatly modify these properties, and polymers system is fixed, its natural frequency (hence
are sometimes blended with other polymers. isolation efficiency) is also fixed. Conversely,
Interchanging elastomers without knowing the establishing system natural frequency automatically
characteristics of each can lead to serious problems. fixes the shock response. Thus, a mounting system
A 50 durometer Neoprene is entirely different from a cannot be designed for incompatible shock and vibraton
50 durometer natural rubber. A 50 durometer natural requirements. It is sometimes possible to design for
rubber from another manufacturer will not have the seemingly incompatible requirements through use of
same characteristics as a 50 durometer natural mountings with carefully controlled non -linear spring
rubber from "RESISTOFLEX". rates.

FALLACY : Static and dynamic spring rates are

equal.

FACT : Static spring rate is obtained when a load is

applied at a relatively slow speed, and is represented
by the standard load - deflection curve. This
characteristic is used for calculating load distribution
and static deflection. The dynamic spring rate of an
elastomeric material is generally higher than its static
spring rate and is affected by strain, frequency and
temperature. The dynamic rate is used in calculating
natural frequency.

FALLACY : Mounting spring irate is constant for

any load.

Curves direct relationship of shock and vibration response. The

FACT : No spring has a perfectly linear spring rate requirement for one determines response for the other.
for the entire range of deflection. When selecting
a mounting for a particular application, the shape
of the spring rate curve should always be
considered. FALLACY : Unbonded elastomeric parts are just as
good as bonded parts.
Curves illustrate load vs. deflection characteristics for various FACT : Bonded parts are usually more efficient in the
types of elastomeric mountings field of vibration control. While unbonded designs
perform well in some vibration control and other
applications, they ordinarily do not efficiently distribute
the load over the entire volume of elastomer. Bonded
mountings can be designed for proper load distribution
in shear, compression, tension or combination loading.

FALLACY : Rubber is compressible.

FACT : Elastomers are normally considered to be
incompressible. However, they deflect and bulge
under compression loading when they are not
RPL ADS ACR 550 FEB 13

confined.

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Selection of
Vibration Isolation Systems
for HVAC, GENSETS & SERVICE EQUIPMENTS
IN PLANTS & BUILDINGS

Range of Open and Enclosed Spring Mountings, Hangers, Rubber Pads & Mountings, Inertia
Pouring Frames, Floating Floor Systems, Rubber Expansion Joints & Bellows.

ORS OS ES SH&RH ACH

Open Restrained Spring Mountings Open Spring Mountings Enclosed Spring Mountings Spring & Rubber Hangers Acoustic Ceiling Hangers
Load: 100-2300 kg Load : 5 - 2300 kg Load : 5 - 2000 kg Load : 5 - 600 kg Load: 1 - 50 kg

RM IPF SRS&SBS GENFLEX

SRSA
Turret Rubber Mountings Inertia Pouring Frames Rubber Expansion Joints Floating Floor Rubber Mountings
Load : 5 - 500 kg Std up to 2400 x 1400 mm Size 32-350 Systems Load: 250 - 2000 kg

STUDFLEX SC CSD SFD BM

Rubber mats Square Cell Pads Combined Spring & Damper Units Spring Viscous Dampers Level Mounts
2
Load: 1300 - 6540 kg Load: upto 21 kg/cm Load: 300 - 3200 kg Load: 400 - 4000 kg Load: 200 - 6000 kg

licensed in 1992 by

Vibration Shock Seismic Control

1.0 INTRODUCTION
The selection of the most appropriate type of Vibration Isolator for the item of plant or equipment to be isolated
is critical if an effective and economical result is to be achieved. Whilst the selection procedure can become
involved requiring the use of complex mathematical analysis for the more critical applications, there are some
simple guidelines which the designer/specifier can use to provide a first estimate of the type of Vibration Isolator
system that may be required. This is helpful when detailed information required to conduct a full design analysis
is not available, particularly at the start of a project.

The graph Figure 1 illustrates the Vibration Isolator deflection required to reduce the transmission of Vibration to
a given percentage of the Vibratory forces generated by the item of plant or equipment concerned. To use the
graph:
(1)Consider the disturbing frequency to be the lowest rotational speed of the equipment.
(2)Move vertically to the slanted line corresponding to the percentage transmissibility which can be tolerated.
(3)Then move horizontally to determine the minimum static deflection and corresponding vertical natural
frequency of the required Vibration Isolation. The graph indicates the maximum permissible transmissibility for
typical situations as follows:
NON CRITICAL: e.g. Basement and ground floor locations not adjacent to noise critical spaces.
GENERAL: e.g. First floor and other suspended floor locations with less than a 10m span not adjacent to noise
critical spaces.
CRITICAL: e.g. Suspended floor with greater than 10m span or locations immediately adjacent to noise critical
spaces.
Figure 1 provides preliminary guidance for the Vibration Isolator characteristics required, although it
presupposes that the Vibration Isolator is a "perfect spring" and is therefore linear over the deflection range
considered. It ignores non-linear effects which are normally present in "real springs" at higher frequencies which
may detrimentally affect the isolation efficiency actually achieved. This simple presentation also assumes that
the Vibratory forces are vertical and does not give consideration to horizontal forces or couples which create
motion in the other linear and rotational modes.

licensed in 1992 by

Vibration Shock Seismic Control

Complete Technical Analysis & Isolation Selection on COMPOUND RESILIENT MOUNTING SYSTEM (CRMS)
Software Programme can be performed for your application.
Contact our Applications Engineering Department with weight, speed and GA drawing of equipment.

The table Figure 2 give general guidance for the isolation of common items of plant or equipment in typical
situations as described in subsequent sections of this Data Sheet.

This Data Sheet is for general guidance only, particularly for use when full details of plant and equipment and
their precise locations may be unknown. Prior to final selection of vibration isolation systems, please consult our
Applications Engineering Departments who, upon receipt of full details, will be pleased to recommend/vet final
Vibration Isolator selections.

Figure 2

LOCATION

I II III
DATA SHEET
SELECTION

EQUIPMENT
Mounting Mounting
Min. Deflne. Mounting Type Mirt. Defln. Min. Defln.
Type see Type see
(mm) see Section 3.0 (mm) (mm)
Section 3.0 Section 3.0

IP F + RM 6 IPF + OS 10 IPF + OS 25
Pumps - Base Mounted Pumps- IP F + RM 6 IPF + OS 10 IPF + OS 25
2.1 Belt Driven Pumps - Close RM (+FSB) 3 RM (+ FSB) 6 20
IPF + OS
Coupled Pressurization Units RM (+ FSB) 3 RM (+ FSB) 6 20
FSB + OS

ES + RP
2..2 AHU's ES 15 ES 25
(Two sta ge)
25 + 3

Centrifugal Fans Axial Flow Fans RM 10 ES 15 ES 25

2..3 RM 10 ES 15 ES 25
Suspended Fans, etc. RH 10 SH 15 SH 25

Chillers Reciprocating Chillers Genflex 10 Genflex 15 ES 25

2. 4
Centrifugal Genflex 6 Genflex 10 Genflex 15

Cooling Towers & Air Cooled

2. 5
Condensers
— — ORS/ES 25 OR S/ES 50

2. 6 Boilers RP 3 RP 6 — —

2. 7
Internal Combustion Engines & Genflex 15 ES 20 ES + Genflex
25+15
DG Sets {Two S ta ge )

2. 8 Pipe work REJ REJ RET

Miscellaneous equipments for

compressed air, water supply,
2. 9 fire fighting, Laundry & Consult RESISTOFLEX
Electrical Panels, Lifts,
Escalators etc.

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2.0 GENERAL GUIDANCE NOTES FOR THE SELECTION OF VIBRATION CONTROL SYSTEMS FOR
COMMON TYPES OF EQUIPMENTS IN BUILDINGS

2.1 PUMPS

2.1.1 These are normally direct drive units running at 1450/2900 rpm or belt driven from a motor mounted on
top of the pump at variable speeds but normally in the range 800 -1300 rpm.

2.1.2 In basement plant rooms most pumps can be successfully isolated using rubber pad type isolators
"sandwiched" in a builders work plinth. Select to give 2-3mm deflection. This should have a weight equal to the
pump for direct drive pumps and twice the weight for belt driven sets with maximum plan dimensions for stability.
Minimum depth 150mm.

2.1.3 For installation in plant rooms above or adjacent to occupied areas concrete filled inertia bases with open
or enclosed springs mountings with nominal 25mm deflection should be used. These can be replaced with
rubber mountings with 6mm nominal deflection for pumps running at 2900 rpm. Base weight should not be less
than the pump weight but ideally a 1:1.5 or 1:2 ratio is advisable for top heavy belt driven units.

2.1.4 A large shallow base will always be more stable than a small deep base of the same weight. An economic
and technically preferable method of using a large base is to mount the duty and stand by pumps on a common
base.

2.1.5 Pipe work should always be supported independently and connected to the pump using Rubber
Expansion Joints after the mountings have been adjusted to support the pump and base at the required height.

2.2 AIR HANDLING UNITS

2.2.1 Generally air handling units will be supplied to site with internal Vibration Isolators supporting the fans and
motors. For fan speeds below 1500 rpm these will be open or enclosed spring devices at 25mm nominal
deflection and above this speed rubber mountings at 6mm deflection.

2.2.2 In noise critical areas it is a wise precaution to mount the complete AHU on rubber compression stud pads
or square cell pads (2-3mm deflection). Steel spreader plates may be required with a friction pad if the support
frame channel is very narrow

2.2.3 For installations on raised steel structures, it is sometimes necessary to use external spring mountings
with additional rigid steel sub frames. Where the motor is mounted outside the AHU casing the fan / motor
section may be externally mounted and coupled to the other section with a flexible section.

2.2.4 All ductwork and pipe work connections to AHU's must include flexible connections.

2.3 FREE STANDING FANS

2.3.1 The two general types used are axial direct drive and centrifugal belt driven units. The former usually
operate at 1450 or 2900 rpm and are located in horizontal or vertical ductwork runs with flexible connections on
either side. Centrifugal units are mainly floor mounted and can operate at a fixed speed between 200 and 3000
rpm or they may have a dual speed system and more often recently an infinitely variable speed TASC drive

2.3.2 Axial fans may be suspended from the ceiling using rubber hangers with 6mm nominal deflection.
However a more satisfactory method is to provide a rigid steel cradle from the ceiling with Rubber Conical Turret
mountings between the underside of the fan and frame. This avoids the pendulum effect hangers with drop rods.
In extreme cases where low frequency vibration may be a problem 25mm deflection spring hangers or mountings
may be used on larger fans operating at 1450 rpm. Vertical fans can be supported from cantilever brackets using
rubber or spring mountings as appropriate.

Centrifugal fans with their generally lower operating speed range should be isolated using Enclosed Spring
Mounting with nominal 25mm deflection. It is not normally necessary to use 50mm deflection mountings unless
the fan is likely to be operated at less than 500 rpm. OPEN SPRING MOUNTINGS can be used but these are
more susceptible to "short circuiting" by the ingress of site debris if not enclosed in an AHU.

2.3.3 Flexible connections to ductwork must be used.

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2.4 WATER CHILLERS/CONDENSERS

2.4.1 These are either roof mounted Air Cooled units or Water Cooled sets located in plant rooms at any level in
a building.

2.4.2 Air Cooled models produce vibration from the large propeller type fans and internal reciprocating
compressors. The fan speeds can be very low, e.g. 360 rpm, however the vibration produced is negligible and
therefore a high degree of isolation at these frequencies is not necessary. The GENFLEX High Deflection rubber
mounting is best suited to the larger units with deflections between 10 and 16mm. However, for small units the
ENCLOSED CAPTIVE SPRING MOUNTING is more economical.

2.4.3 Water cooled chillers are generally larger with higher power compressors. These can be reciprocating
(usually 1450 rpm) centrifugal or screw type, the former being the most severe in terms of vibration. The latter
two types normally run at high speeds, e.g. 2900 rpm and above producing high frequency vibration and noise.
The GENFLEX HD mounting again is the best selection for most applications. Pad type mountings can be used
on the high speed centrifugal and screw type units in some basement areas with no noise sensitive areas in
close proximity.

2.4.4 Stability problems can be experienced when tall, slender chillers are located directly on mountings. To
avoid such problems steel subframes or even Inertia Pouring Frames may be required. The mounting transverse
centres should be greater than the vertical distance to the unit's centre of gravity position.

2.4.5 As with all isolated equipment, pipework connections must incorporate flexible connections, non metallic
where practical.

2.5 COOLING TOWERS

2.5.1 These units which are generally roof mounted incorporate integral axial or centrifugal fans. However,
some designs now have the fan mounted independently with a flexible connection to the water tower.

2.5.2 Towers with integral fans have the disadvantage of being extremely heavy when full of water making
isolation of fan vibration expensive. The weight does, however, work rather like an inertia base for the fans. Quite
often vibration from the usually low speed fans (200 - 900 rpm) is negligible compared to the unit weight. High
deflection spring mountings are often specified to give high isolation of the speed fans which is quite
unnecessary in most cases. The use of these devices gives rise to practical problems with installation resulting in
the springs being "short circuited ". Also excessive motion can result in high winds and vertical movement when
draining down requires restraint to avoid over stressing flexible pipework connections.

2.5.3 To avoid all the problems in paragraph 2.5.2 high deflection rubber mountings should be used giving
reasonable vibration isolation down to 500 rpm, but more importantly vastly superior isolation in the audible
frequency range. If a specifier is inflexible then the OPEN RESTRAINED SPRING should be used preferably at
not more than 25mm nominal deflection.

2.6 BOILERS

2.6.1 As with cooling towers, boilers have a high weight with negligible vibration which emanates from the
burners and associated fan/motor. The vibration, however, is high frequency and thus creates mainly airborne
noise problems.

2.6.2 Structural transmission of the vibration/noise can be most practically and Economically avoided using
Compression Stud pads with steel spreader plates for narrow channel construction frames. A deflection of 2-
3mm is adequate. Where for acoustic reasons a concrete slab is required beneath the boiler this can be cast on
a layer of rubber pads covered with steel sheets.

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Vibration Shock Seismic Control

2.7 DIESEL GENERATING SETS

2.7.1 These are usually for emergency power supply only and are therefore sometimes located in unsuitable
areas where extreme annoyance is caused during regular test running periods. Effective vibration isolation is
therefore required.

2.7.1 ENCLOSED CAPTIVE SPRING MOUNTINGS (nominal 25mm deflection) or GENFLEX HD rubber
mountings will be suitable for the majority of applications which operate at a standard speed of 1500 rpm. For
installations directly above or adjacent to noise critical areas, a complex two stage mounting system may be
necessary. These applications together with those which produce continuous power supply to a building should
be referred directly to RESISTOFLEX.

2.8 PIPEWORK

2.8.1 Vibration emanating from pumps, compressors etc will be present in most systems despite flexible
connections. This is because the flexibility is compromised by the liquid flowing through it, the tie bars and the
strength required to with stand the liquid pressure. Vibration is also produced by fluid pressure surges and
turbulence created by change of direction etc.

2.8.2 All pipework of 50mm dia above in plant rooms below occupied areas should be isolated using spring
hangers with 25mm nominal deflection. In less critical areas it is normally sufficient to isolate the first 12m of pipe
from the vibration source, where pipework passes through noise sensitive areas rubber hangers or mountings
with nominal 6mm deflection should be used. OPEN SPRING MOUNTINGS or rubber mountings can be used for
vertical pipe runs depending on location as mentioned above.

2.8.3 Small pipework, i.e. below 50mm dia in critical situations as Para 2.8.2 can be isolated with small range
SPRING HANGERS with deflections of 10 - 20mm. In normal circumstances a 3 - 6mm thick RESILIENT PIPE
CLIP will be sufficient.

2.8.4 Engine exhaust pipework with silencers will require isolation and SPRING HANGERS OR OPEN SPRING
MOUNTING with nominal 25mm deflection will be necessary. Consideration must be given to pipe temperature
and expansion particularly for tall vertical stacks. Please refer such applications to RESISTOFLEX.

2.9 MISCELLANEOUS EQUIPMENTS

For compressed air, water supply, fire fighting, Laundry & Electrical Panels, lifts, escalators etc consult
RESISTOFLEX.

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Vibration Shock Seismic Control

3.0 SPECIFICATION FOR VIBRATION ISOLATION DEVICES

3.1.0 GENERAL

3.1.1 All Vibration Isolators should be selected to provide the minimum static deflection required which should
be achieved on all Vibration Isolators under normal operating conditions.

3.1.2 All Vibration Isolators must be suitable for the loading, operating and environmental conditions which will
prevail.

3.1.3 All Vibration Isolators shall be colour coded or otherwise clearly marked to facilitate identification during
installation and service.

3.1.4 For higher efficiency of an isolator system external connections such as rigid pipes, electrical conduits,
ducts or shafts be as flexible as possible not only to prevent transmission of vibration through the connections
and allow the system freedom of movement but also to avoid possible failure of the connections.

3.1.5 The Vibration Isolator system should be selected to support the operating weight of the plant and
equipment to be isolated only. All associated pipework, valves, filters, ductwork etc. and their contents must be
supported independently so as not to impose additional forces on the isolator system and all flexible connections
must be selected and arranged to accommodate this requirement.

3.1.6 Where it is proposed to support AHU/enclosed fan units on vibration isolators, it is recommended that
flexible connections are fitted to any external connecting ductwork, pipework, conduits etc regardless of whether
or not the internal fan and motor assembly is supported on vibration isolators and has internal flexible
connections to the unit casings.

3.1.7 All pipework of 50mm diameter and above and high pressured ductwork should be isolated within a
mechanical plant room for a minimum distance of 15 metres from the motor driven plant.

3.1.8 All Isolators and Expansion Joints shall be of RESISTOFLEX make.

RPL ADS ACR 546 FEB 13

licensed in 1992 by

Vibration Shock Seismic Control

For more detailed information and technical assistance, please contact our Applications Engineering Group.

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Determining Isolator Deflection
FOR A PREDOMINANT STEP I DETERMINE DISTURBING
FREQUENCY (fd)
SINGLE DEGREE OF FREEDOM Consider this to be the lowest
speed of the heaviest mass of
the equipment

STEP II MOVE HORIZONTALLY

TO REQUIRED
ISOLATION EFFICIENCY ()
Select from following
typical situations:

1. GENERAL (70% to 80%): eg.

Ground Supported locations

2. CRITICAL (80% to 95%): eg.

Elevated Structures & Upper
Floors with less than 10m span

3. VERY CRITICAL
(95% to 99%): eg.
Suspended floors
with greater than
10m span or
locations immediately
adjacent to noise
critical spaces

STEP III

MOVE VERTICALLY
DOWN TO
DETERMINE MIN.
STATIC DEFLECTION
OF ISOLATOR

Vibration Shock Seismic Control

 QUICK ISOLATOR DEFLECTION CHART
Step to use the Chart : Step I Consider Disturbing Frequency (fd) Vibration Shock Seismic Control
Step II Move Horizontally to required Isolation Efficiency (%)
Step III Move Vertically down to determine Min. Static Deflection of Isolator

VIBRATION ISOLATION EFFICIENCY (%)

DISTURBING
CODE No.
FREQUENCY 0 20 40 50 60 70 80 90 95 96 9 98 99

▼ VIBRATION ISOLATION EFFECT (dB)

fd
0 2 4 6 8 10 14 20 26 28 30 34 40

CPM HERTZ ISOLATOR STATIC DEFLECTION (mm)

200 3.33 43.7 47.8 54.9 64.0 73.2 93.5 125.0 - - - - - -

250 4.16 27.4 30.5 34.5 40.6 48.8 59.9 82.3 169.7 - - - - -
300 5.00 19.3 21.3 24.5 28.4 33.5 41.7 56.9 103.6 203.2 248.9 - - -
350 5.83 14.2 15.7 17.8 20.8 24.6 30.5 41.7 75.9 148.8 182.4 242.3 - -
400 6.66 10.9 11.9 13.7 16.0 18.3 23.4 31.2 59.4 114.3 139.7 185.4 - -
450 7.50 8.6 9.7 10.9 12.7 15.0 18.5 25.1 45.7 89.9 110.2 141.7 224.8 -
500 8.33 6.9 7.6 8.6 10.2 12.2 15.0 20.6 37.3 73.2 89.7 118.9 182.9 -
550 9.16 5.8 6.4 7.4 8.4 9.9 12.4 17.0 31.0 60.5 74.2 98.3 151.1 -
600 10.00 4.8 5.3 6.1 7.1 8.4 10.4 14.2 25.9 50.8 62.2 82.6 127.0 241.3
650 10.83 4.1 4.6 5.1 6.1 7.1 8.9 12.2 22.1 43.2 52.8 70.1 108.0 205.7
700 11.66 3.6 4.1 4.6 5.3 6.1 7.6 10.4 19.1 37.3 45.7 60.7 93.5 177.8
750 12.50 3.0 3.3 3.8 4.3 5.3 6.4 8.9 16.0 31.5 38.6 51.3 78.7 150.0
800 13.33 2.8 3.0 3.6 4.1 4.6 5.8 7.9 15.0 28.7 33.8 46.5 71.6 143.5
850 14.16 2.5 2.8 3.0 3.6 4.3 5.3 7.1 13.0 25.4 31.2 41.4 63.5 120.7
900 15.00 2.3 2.5 2.8 3.3 3.8 4.6 6.4 11.4 22.6 27.7 35.6 56.1 107.2
950 15.83 1.8 2.0 2.5 2.8 3.3 4.1 5.6 10.4 20.3 24.9 33.0 50.8 96.5
1000 16.66 1.8 2.0 2.3 2.5 3.0 3.8 5.1 9.4 18.3 22.6 29.7 45.7 86.9
1100 18.23 1.5 1.5 1.8 2.0 2.5 3.0 4.3 7.9 15.2 18.5 23.3 37.8 71.1
1200 20.00 1.3 1.3 1.5 1.8 2.0 2.5 3.6 6.6 12.7 15.5 20.6 31.8 60.5
1300 21.66 1.0 1.3 1.3 1.5 1.8 2.3 3.0 5.8 10.9 13.2 18.3 26.9 51.6
1400 23.33 1.0 1.0 1.3 1.3 1.5 2.0 2.5 4.8 9.4 11.4 15.21 23.4 44.5
1500 25.00 0.8 0.8 1.0 1.0 1.3 1.5 2.3 4.1 7.9 9.7 13.0 19.8 37.6
1600 26.66 0.8 0.8 1.0 1.0 1.3 1.5 2.0 3.8 7.1 8.4 11.7 18.0 35.8
1700 28.33 0.8 0.8 0.8 1.0 1.0 1.3 1.8 3.3 6.4 7.9 10.4 16.0 30.2
1800 30.00 0.5 0.8 0.8 0.8 1.0 1.3 1.5 2.8 5.6 6.9 8.9 14.0 26.9
1900 31.66 0.5 0.5 0.8 0.8 0.8 1.0 1.5 2.5 5.1 6.4 8.4 12.7 24.1
2000 33.33 0.5 0.5 0.5 0.8 0.8 1.0 1.3 2.3 4.6 5.6 7.4 11.4 21.8
2100 35.00 0.5 0.5 0.5 0.5 0.8 0.8 1.3 2.0 4.1 5.1 6.9 10.4 19.8
2200 36.66 0.5 0.5 0.5 0.5 0.8 0.8 1.0 2.0 3.8 4.6 5.8 9.4 17.8
2300 38.33 0.3 0.3 0.5 0.5 0.5 0.8 1.0 1.8 3.6 4.3 5.6 8.6 16.5
2400 40.00 0.3 0.3 0.5 0.5 0.5 0.8 1.0 1.8 3.3 3.8 5.1 7.9 15.2
2500 41.66 0.3 0.3 0.3 0.5 0.5 0.5 0.8 1.5 3.0 3.6 4.8 7.4 14.0
2600 43.33 0.3 0.3 0.3 0.5 0.5 0.5 0.8 1.5 2.8 3.3 4.6 6.9 13.0
2700 45.00 0.3 0.3 0.3 0.3 0.3 0.5 0.8 1.3 2.5 3.0 4.1 6.4 12.2
2800 46.66 0.3 0.3 0.3 0.3 0.3 0.5 0.8 1.3 2.3 2.8 3.8 5.8 11.2
2900 48.33 0.3 0.3 0.3 0.3 0.3 0.3 0.5 1.0 2.3 2.8 3.6 5.6 10.4
3000 50.00 0.3 0.3 0.3 0.3 0.3 0.3 0.5 1.0 2.0 2.5 3.3 5.1 9.4
Transmissibility (%) = 100 - Isolation Efficiency (%) GENERAL CRITICAL VERY CRITICAL
COMPOUND RESILIENT MOUNTING SYSTEM (CRMS) : Computer Software developed by our collaborators, M/s. Christie & Grey, for Selection of Vibration &
RPL ADS ACR 550 FEB 13

Shock Isolation System from SIMPLE HVAC equipments to COMPLEX POWER PLANT and NAVAL applications is used in house.

FOR A SINGLE DEGREE OF FREEDOM a computer aided Isolator selection is provided FREE.

FOR SIX DEGREE OF FREEDOM it simultaneously analyses systems comprising several masses linked to each other & a foundation (seating) by resilient elements
& calculates natural frequencies & response to static & dynamic steady state, transient & shock forces for each mass. Forces transmitted from vibrating body to the
supporting structure via a resilient mounting system(s) over a wide frequency range (upto 1 kHz) are predicted. Finite element analysis is used to predict the
response of structures to high frequency excitation.

For more detailed information and technical assistance, please contact our Applications Engineering Group.

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Shock & Flexibly Mounted
Machines
What is meant by Shock ?

Any transient non repeating force or displacement can be considered a shock. Usually the period of such an
event is similar to or shorter than the natural period of motion of the equipment being considered.

The disturbance may be a force as might be created by a short circuit across an alternator or a displacement
such as an earthquake.

The magnitude of a shock is normally large enough to give rise to concern that damage will occur to the machine
or its supports. In some cases the functioning of the machine will be affected during the shock although no
permanent damage will result.

1) Earthquakes - A typical ground motion of about 0.5 g acceleration with most energy below 5 Hz and mainly
horizontal. One earthquake may last 30 seconds and the amplitudes of the ground may be considerably
amplified by most building structures. Mounted equipment may be subject to significant floor motions at well
defined frequencies.

2) Explosions - Short duration impulsive forces which can give rise to long period resonances in buildings or
other structures. Examples include charges used for seismic surveying, quarrying, terrorists' bombs and naval
gunfire or under water mines.

3) Collisions - These include problems with vehicles, items on conveyor belts and packages being dropped.

4) Internal forces - These particularly affect electrical generators and reciprocating machines, as with passing
through resonances during start up, shut down and short circuits.

Typical Shock Isolation of a Generator Set Isolation of an

Electronic Cabinet

Methods of Shock Analysis

There are two main approaches to determining the response to shock.

1) Time history - A model is created on the computer and its responses over successive small time steps are
calculated to form a continuous history of the machine motion.

2) Spectral response method - A more general method based on the theoretical response of a single degree
of freedom damped spring/mass model at each frequency of interest. The individual responses for each mode of
motion are built up in a complex response for three dimensional methods.

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Time History Calculations Mechanical Data for the Model
B
Mass (M) : 5000.0 kg L
At Christie & Grey the time history method is Mass Moment Of Inertia : 2500.0 kg.m.sqd M
Dimensions W : 500.0 mm H
preferred which allows for non linear stiffness H : 600.0 mm A
and a more accurate modeling of the shock. L : 500.0 mm K3
K1 K2
The results are 'mathematically accurate' Limiting stops to stiffen 15 % per mm
although only as good as the input shock data. Damping : 7.0 percent of critical
W W
The spectral response method is mainly Isolator Dynamic Stiffnesses (N/mm)
applied to earthquake responses. The linear Mass Side Stop Central Element Floor Side Stop Limiting Stop
spring model and statistical nature of the K1 30060.0 2388.0 30060.0 4.5
shock data permit only an estimate of the K2 30060.0 2388.0 30060.0 4.5
K3 25600.0 4602.0 25600.0 6.0
worst probable response, rather than an
accurate calculation.

The models used to represent the machine

include rigid masses with springs and viscous
dampers allowing for translation and rotation in
the three dimensions. A number of masses can
be inter - connected to represent, for example,
a system of three machines flexibly mounted on
an isolated floor. The analysis generally leads
to a report of the maximum acceleration and
relative displacements at positions of interest
enabling the probability of damage or
malfunction to be assessed. Particular care is
taken over the flexible connections such as pipe
bellows or shaft couplings which are frequently
vulnerable to damage during shocks.

Simplified Models

Shock problems create large displacements

which cause mountings to buffer. Indeed many
mountings incorporate flexible stop units to
control this effect. Whilst these non linear
effects can be included in complex models, the
results are often difficult to understand. Often a
simpler one or two dimensional model will
provide accurate enough results to enable the
basic system to be refined. The calculation
shown here is an example of such a time
history. Comparison with a more complex
method using a three dimensional non linear
analysis has shown maximum displacements
and accelerations to be very similar, the
simpler method requires less time to set up and
run.
INPUT SHOCK — DAMPED SINE WAVE Maximum Values Calculated from the Time History
SEISMIC DISPLACEMENT. Calculation end time : 600.0 msec.
Calculation interval : 0.20 msec
Amplitude : 10.0 mm
Frequency : 12.0 Hz Maximum Value Time of Max (msec)
Damping : 0.15 of critical Foundation Displacement 10.02 mm 18.8
Foundation Velocity 940.82 mm/sec 0.2
Foundation Acceleration - 6.21 g 15.0
C of Gravity Transverse Displacement - 8.53 mm 78.2
C of Gravity Rotational Displacement 0.85 deg 111.8
C of Gravity Transverse Velocity 636.73 mm/sec 91.2
C of Gravity Transverse Acceleration 8.36 g 78.2
Transverse Isolator Compression 14.17 mm 79.8
Point A Transverse Acceleration -16.84 g 112.2
Vertical Isolator Compression 7.46 mm 111.8
Point A Vertical Acceleration 7.37 g 111.8
Point B Transverse Re. Disp 9.37 mm 17.4
Point B Transverse Acceleration 2.56 g 83.6
Mounts Total Transverse Force 410005.66 N 78.8
K(2) Side Vertical Force 129846.66 N 110.4

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Vibration & Noise Vibration Shock Seismic Control

ISOLATION OF AIRCONDITIONING
MACHINERY INSTALLED AT UPPER FLOOR

To effectively prevent transmission of Vibration

and Noise produced by Chiller & Pumps to
other parts of the building, an independent
machine room should be constructed.

Typical modes of Isolation :

■ Supplementary Floor Slab by Neoprene

Pads / Mountings.

■ Side Walls by Neoprene Pads at Top &

Bottom.

■ Inertia Concrete Blocks of Chiller & Pumps

by
Neoprene Pads on all sides.

■ Chiller and Pumps by Spring Mountings.

■ Pipes by Neoprene Spring Hangers and

Seals.

RPL ADS ACR 513 FEB 13

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Rooftop Isolation System Vibration Shock Seismic Control

FOR BUILDINGS & MEDICAL CENTRES

No noticeable vibrations and noise transmitted

below due to very high isolation efficiency

RPL ADS ACR 510 FEB 13

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Dubai - Apartment Vibration Shock Seismic Control

BUILDING

CHILLER FOUNDATION ON BUILDING ROOF

RPL ADS ACR 511 FEB 13

CHILLER PIPELINE VIBRATION ISOLATED WITH

SPRING HANGER SUSPENDED FROM BUILDING CEILING

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Fans and Blowers Vibration Shock Seismic Control

Fan Units, Blowers and such like develop an unbalanced force to be reacted by the Isolators causing them to
force ('F' in diagrams) equal to the product of the deflect horizontally or vertically or a combination of
delivery/suction pressure and the outlet/inlet cross both.
sectional area. This force will be reacted both the In the majority of cases, the horizontal and vertical
service duct work and the ground via the Vibration Isolators stiffnesses will compensate, with the
Isolators. movement of the fan being negligible, but in certain
instances e.g. high duty fan units; additional
Since the duct work will incorporate flexible connections precautions may be necessary as suggested in the
at some point, these will yield leaving most of the diagram

Where the discharge / inlet is horizontal (or angled) fitted in convenient positions.
reactive Isolators can be

Where the discharge/inlet is vertical, the Isolator (and its line of action); when the fan is operating at
selection should allow for the additional force being maximum duty.
applied
 Vibration Shock Seismic Control

In installations where the support floor is found to be In these situations, packing should be applied to the
excessively uneven or the machine base frame appropriate Isolators to ensure that they are correctly
distorted, final leveling of the machine may result in adjusted and the load properly distributed
certain of the Isolators being lifted beyond their
maximum allowable working height.

Rigid connections if used on the machine, will

transmit vibration to the support structure and thus
reduce the vibration isolation efficiency. In order to
minimize this effect, service and delivery pipework
should incorporate flexible sections with electrical
cable loops and the like installed in a non-rigid
fashion.
Pipework should, where possible, be fitted with
flexibles having their axes both vertical and horizontal
in order to minimize rigidity in both planes.

RPL ADS ACR 520 FEB 13

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Centrifugal Fan/Blower Vibration Shock Seismic Control

(BELT DRIVEN)

Fan / Blower and driving motor must be mounted

on a common base and not individually on
mountings. The base frame should run full
length of fan / blower & motor for proper
mechanical support.

The common base frames are usually fabricated

from structural steel & invariably to resist belt
pull eliminate drive distortion due to unequal
weight distribution which ultimately result in blades
rubbing against housing.

Fan / Blowers produce high level of vibration due

to excessive flapping of belts, wear of bearings &
shafts etc. even a rocking frequency may amplify
which may well be excessively disturbing. Blower on 50 mm deflection open springs isolators at
second floor. Vibration Isolation efficiency over 98%

Many times, lateral Restrains become necessary

when the unit tends to move in a horizontal plane
due to heeling effect of reaction to high discharge
air velocity specially in high pressure fan or are
located outdoors and are rejected to external
forces (wind). Light fabricated frames are simply
unsuitable for installing directly on soft springs or
rubber mountings.

To resolve the shortcomings it is always highly

desirable to add heavy inertia mass. Inertia
Pouring Frames filled with concrete allow high
deflection / low stiffness
mounting system to be used which are required for
isolation of low disturbing frequency without
excessive motion.

Additionally Dampers can be incorporated in the

system to further control motion during transient
conditions such as start-up and shut-down.

RPL ADS ACR 519 FEB 13

Blower in AHU on Spring Units

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Fan & Air Handling Units Vibration Shock Seismic Control

These units are typical of all centrifugal machines and The degree required depends on the increase in
are the most frequently used. forces, the location in the building, beam spans
and the structure on which the equipment rests.
Vibration results from two sources - rotor unbalance
and forces resulting from impulses of air as the fan For these reasons there can be sharply defined
blades pass the fan cut off. The frequency of the latter divisions bur rather overlapping areas where
is equal to the number of fan blades times Fan RPM. differences in degrees of amplitude are sometimes
Since this is higher than the rotor speed, fan RPM is disturbing and sometimes not. In view of the above
usually used as the disturbing frequency. and based on experience with present equipment
certain criteria may be established that will result in
The amount of unbalance is of concern to the equip- trouble free installations.
ment manufacturer. Fans, as they are now produced,
are statically and dynamically balanced to very close For small units with wheel diameters up to 700
tolerance. This results in very small forces which mm, the forces transmitted at any speed are so
increase in proportion to the rotor diameter and to the small that high efficiencies are not required.
square of the fan speed. This means that the disturb- Accordingly such units may be isolated using
ing forces, working against the inert mass of the TURRET MOUNTS providing 6 mm static deflec-
machine and the building, require isolation in propor- tion in no-critical areas and Spring Isolators
tion to their ability to move these masses. Obviously, providing 12 mm to 20 mm maximum deflections in
small rotor diameters and relatively slow speeds more critical area.
develop such small forces that they are incapable of
moving large masses and therefore, may easily by For larger wheel diameters, isolation efficiencies
treated. As rotor speeds and sizes increase, the should be selected on the basis of speeds as
isolation efficiency must also increase. follows:

RPM ISOLATION EFFICIENCY MAXIMUM DEFLECTION

Upto 450 75% 90mm
451 - 850 90% 90mm
851 and over 95% 90mm

The above efficiencies and deflection apply to installations above

grade upto 10 meter spans. For spans longer than 10 meter,
consideration should be given to the greater resiliency in the floor
and should be compensated for by larger deflections in the
isolators in order to achieve the desired results.

..........2
 Vibration Shock Seismic Control

In addition to the proper selection of the isolation All type of RESISTOFLEX Inertia Pouring Frames are
medium, it is also essential to provide proper mechani- so constructed.
cal support. Each fan and its driving motor must be
mounted on a rigid base, common to, and running the An inertia mass may be desirable where structural
full length of the fan and motor. Sufficient rigidity is steel alone does not provide sufficient rigidity or
necessary especially on the drive side in order to resist where discharge air velocities cause greater reaction
belt pull and eliminate drive distortion which may result forces. The recommended weight of the inertia mass
in the excessive wear of belts, bearings and shafts, and depends on the magnitude of the forces to be resisted.
amplify a rocking frequency which may well be Lateral restraints may also be required when forces
excessively disturbing. tend to move equipment in a horizontal plane (i.e. high
pressure air handling units).

RECOMMENDED RATIO OF INERTIA BASE WEIGHT TO WEIGHT OF

SUPPORTED EQUIPMENT

SUPPORTED EQUIPMENT MOTOR HORSEPOWER

5 10 20 30 40 50 60 75 100 125 150
FANS : Centrifugal, Axial & Tubular
NOT REQD 1.5: 1
0 TO 125 mm Static Pressure

130 mm Static Pressure & over NOT REQD 1.5: 1 2: 1

A.H. UNITS
Factory fabricated sectionalized & NORMALLY NOT REQUIRED
Sprayed Coil Units

Fan Heads only when separated from

accessories by Flexible Connections

0 to 100 mm Static Pressure NOT REQD 1.5: 1

105MM Static Pressure & over 2: 1

Note : Inertia blocks should be used under factory If fan head is rigidly connected to other compo-
fabricated fan section ONLY when fan head is nents - an inertia block need NOT be used.
separated from other components by a flexible
connections.
RPL ADS ACR 522FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

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Air Handling Unit Vibration Shock Seismic Control

WALL MOUNTED
If Air Handling Unit is to be resiliently mounted
on wall, besides Vibration Isolators at bottom,
structurally strong snubbers must also be used
at top to prevent the unit from falling away from
the wall.

AIR HANDLING EQUIPMENT

(FACTORY ASSEMBLED)

Factory assembled Air Handling Equipment are

self-contained units. The base or legs must be
carefully examined to check if it can be directly
mounted on Isolators.

If structural reinforcement is necessary, either

Rails or Inertia Pouring Frame may be used
especially when higher deflections are required.

FAN HEAD

Fan Head develops high horizontal thrust due to

the negative pressure on the very large inlet
area.

When the Fan Head is to be installed directly on

high deflection Isolators, Horizontal Thrust
Restraints are necessary to handle thrust.
Alternatively, Fan Head can be mounted on
Inertia Pouring Frame filled with massive
concrete to maintain stability.

RPL ADS ACR 514 FEB 13

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Chiller Vibration Shock Seismic Control
Vibration Shock Seismic Control

ABSORPTION UNIT

Absorption Chiller normally present very little

problem with regard to vibrations. These
machines can be conveniently installed
directly on Pad Type Mountings for non-critical
areas. But for critical areas, it is preferable to
install on Restrained Spring Mountings with
vertical limit stops & levelling arrangement.

TALL SLENDER UNIT

Tall Slender Chiller if installed directly on

Mountings can create problems of instability.
To avoid this, these should be installed on
Inertia Pouring Frame of adequate size /
weight.

RPL ADS ACR 515 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

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Centrifugal Chiller Vibration Shock Seismic Control

MOTOR AND
TURBINE DRIVEN

These factory assembled integral unit operate at

very high speed but are very well balanced.
They normally present very little problems as far
as vibrations are concerned. Pad type
Mounting System can be conveniently used in
non-critical basement areas with no sensitive
areas in close proximity. But for critical areas,
either Turret or Genflex HD Mounting are
desirable.

ENGINE DRIVEN

Here, the isolation system must be selected for

the engine rather than the compressor. Turret /
Genflex Spring Mountings can be used.

RPL ADS ACR 516 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

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Refrigeration Package Vibration Shock Seismic Control

CHILLER
(RECIPROCATING COMPRESSOR)

DIRECT DRIVE

These self-contained units always have

very sturdy legs & can be directly installed
on High Deflection Housed or Restrained
Spring Mountings, Latter give added
advantage of restricting upward movement
during 'draining - down' of water. This will
avoid damage to pipe work and electrical
connection. However, caution must be
exercised in selecting size to ensure that
reasonably uniform deflection is obtained
on all. isolators of different capacities are
required at the two ends to compensate for
the uneven weight distribution.

V BELT DRIVE

Unit can be installed on Turret Mountings

for non-critical areas. But for critical areas,
high deflection Restrained Spring Mountings
are preferable.

RPL ADS ACR 517 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

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Cooling Tower Vibration Shock Seismic Control

Cooling Tower are now increasingly being

installed on roof tops. Low stiffness
mountings are required to provide high
degree of Vibration Isolation to avoid
physical damage to the building structure
& also annoyance to the occupants.

Cooling Towers contain large volumes of

liquid & during "drain-down", there would
be substantial upward movement. Roof
mounted Towers may also be subjected to
external forces due to high wind velocity.
To limit the movement, vertical & lateral
restraints are necessary which will also
avoid damage to pipe work & electrical
connections. Restrained Spring Mounts
are ideal.

RPL ADS ACR 518 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

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Pumps Vibration Shock Seismic Control

VIBRATION ISOLATORS UNDER

FOUNDATION :

Figure shows a very common pump installation.

Instead of being mounted on a solid foundation,
the pump is supported off the floor on Vibration
Mounts. Mounts are designed to support the
weight of the pump, its motor and base, and the
vertical thrust in suction and discharge lines.
The thrust in the respective pipelines will exert a
force on the inlet and outlet flanges of the pump.
The pump casing should be strong enough to
withstand this force. If this ns not done, it is
possible that this force can be large enough to
crack the connecting flanges.

VIBRATION ISOLATORS UNDER BASE AND

ANCHOR :

An improved installation. The Vibration Mounts

under the pump base need only support the
pump, its motor and base. The Vibration Mounts
under the elbow supports are designed to
withstand the thrust developed in the suction
and discharge lines respectively.

VIBRATION ISOLATORS UNDER

SECONDARY BASE :

A complete secondary base is provided for the

pump base and the two elbow supports
equipped with Vibration Mounts are designed to
take all forces acting upon the secondary base.
These obviously are the weight of the equip-
ment plus the thrusts developed in the suction
and discharge lines.
RPL ADS ACR 524 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

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Closed Coupled Pumps Vibration Shock Seismic Control

Closed Coupled Pumps are usually small in size and the

impeller invariably severely overhangs the motor support
base. The pump must not be installed directly especially
on individual soft mountings, because the rear mountings
will come in tension due to cantilever effect & the whole
system will become unstable.

To avoid instability, it is very practical to use either Rail

type isolation or better still, an Inertia Pouring Frame with
filled concrete extending under the overhang portion. Also
by using a concrete base, the unit will become less
sensitive to external forces. It is always advisable to put
Flexible Connection both on the inlet and outlet sides to
take care of misalignment of pipes, reduce stress & strain
on pump body and at the same time, also attenuate Noise
created by flow of fluid. The installation will look much
more workmanlike.

If the speed is high (2900 rpm) & the application is not

critical, Turret Mounts even without grouting can be used.
For 1450 rpm units, Spring Isolators are recommended.

VERTICAL PUMP

Vertical Pumps (small or big) if installed directly on

Vibration Isolators, will tend to become unstable due to
high center of gravity. They should be installed on large
enough Inertia Pouring Frame with height saving brackets
& filled with concrete for maintaining stability. It would be
highly advisable to use an extended type to support the
piping before attachment to the pump flange. This piping
support will also reduce stress & strain on the pump
casing.

RPL ADS ACR 525 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

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Centrifugal Pumps Vibration Shock Seismic Control

Vibration are generated in pumps as a result of rotor type isolation or an inertia block extending under the
unbalance vane frequency as the moving vanes on the overhang should be used.
impeller pass the fixed vanes, and to some extent by
turbulent flow of the fluid. However, since the ratio of the Rail type isolation or isolated inertial Mountings also
mass of the impeller inert mass of the motor and pump should be used under coupled pumps and motors
housing is relatively small the resulting vibratory which are mounted on a common bed plate to avoid
amplitude is small. Because of the high operating possible warping of the bed plate that can occur when
speeds (usually 1440 RPM) desired isolation efficiency is point supported on unit isolators.
attained with Isolator static deflections from 6mm to 20
mm in buildings with spans up to 10 meters. Deflection Pumps driven by motors 20 HP and larger should be
up to 50mm should be applied to above grade installation mounted on concrete inertia blocks. The weight of the
when column spans are between 10 meters and 15 block is usually a minimum of 1.5 times the weight of
meters. the equipment but not less than 150 mm. It serves not
only as a stabilizer at start-up or when subjected to
In addition to the proper design and application of the sudden fluid surges when valves are opened or closed
isolation medium, proper mechanical support must be but also as a means for supporting elbows when such
provided. Close coupled pumps present a motor base supports are required. These inertia block should be
support with the direct connected pumps usually “L” or “T” shaped to provide support to elbows
overhung. To avoid tipping when resiliently mounted, rail

RECOMMENDED RATIO OF INERTIA BASE WEIGHT TO

WEIGHT OF PUMPING UNIT
CENTRIFUGAL PUMPS MOTOR HORSEPOWER
End Suction Base Mounted 5 10 20 30 40 50 60 75 100 125 150
Horizontal Split Ratio of inertial NOT
base to weight of pumping unit 1.5 : 1 2:1 3:1
REQD.

RPL ADS ACR 525 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

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 Spring Viscous Damper
Type SVD

BASE ISOLATION SYSTEM

FOR
8 NOS. BUILDING STRUCTURES
WEIGHING 320 TONNES EACH

COMBINED PRE - COMPRESSIBLE HORIZONTAL BUFFER UNIT

SPRINGS + DAMPER + PTFE SLIDE BEARING UNIT
SVD 412 BIS SEP 11

Vibration Shock Seismic Control

 Seismic Snubbers
For Floor Supported Equipments Seismic Restraint Systems

Earthquake is not just a single jolt but an input of

random frequencies at different accelerating levels.

Mounted equipments can be completely damaged or

even fly – off if not fully protected against earthquake.

All directional Seismic Snubber will provide safety in

vertical, two horizontal modes as well as in the three
rocking modes.

Snubbers will also take care of errors in alignment and /

or minor shifting.

The equipment will become captive by installing

Seismic Snubber either under or alongside of
the equipment

SNUBBER INSTALLED
ALONGSIDE EQUIPMENT

SNUBBER INSTALLED
UNDER EQUIPMENT

APPLICATIONS:

Air Handling Units, Air Conditioners, Blowers, Bases,

Condensers, Chillers, Cooling Towers, Compressors,
Fans, Fan Coil Units, Motors, Packaged Units, Piping,
D.G. Sets & other essential service equipments
RPL SSZ SEP 16

installed on Vibration Isolators in Auditoriums,

Buildings, Hotels, Hospital, etc.
SSZ ALL - DIRECTIONAL SEISMIC SNUBBER
Style SSZ Snubbers are all directional double acting
type with interlocking steel members restrained by
Neoprene Shock Absorbing Element having physical
and non-ageing properties to match the life of the
installations. They are structurally very sound.

All contact surfaces are resilient with non-linear

stiffness characteristics & are sufficiently thick to allow
adequate time for deceleration down to desirable
levels.

A special feature of Style SSZ snubber is removable

resilient element for checking, if physically damaged
accidentally.

SSZ2 - 220 & 550

SSZ4 - 2200 ~ 11000

DIMENSION & SELECTION GUIDE BY LOADS

RECOMMENDED
CODE CAPACITY DIMENSIONS (mm) ANCHOR BOLT
‘EAB’
(BY OTHERS)
(Kgf) A B C D E F T ≥Gr. 8.8
SSZ2-00220 220 190 158 90 13 76 - 6 M10
SSZ2-00550 550 210 172 150 15 110 - 10 M12
SSZ4-02200 2200 320 254 180 19 127 128 12 M16
SSZ4-05500 5500 370 304 200 27 146 140 20 M24
SSZ4-11000 11000 405 324 280 36 203 210 25 M33

For more detailed information and technical assistance, please contact our Applications Engineering Group.

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 All Directional Seismic Snubber
Type SSB2 & SSB4

All - direction seismic snubbers are

designed for use in locations prone
to earthquakes or other external
forces which could displace vibration
isolated equipment. Rugged, heavy-
duty products are designed to resist
imposed forces from external
sources but remain out of contact
during normal operation so that
vibration is not transmitted to the
building.

It consists of interlocking steel

members restrained by a one -piece
molded neoprene bushing. A
minimum air gap of 6mm is
incorporated in the snubber design
in all directions before contact is
SSB2 made between the rigid and the
resilient surface.

Snubber end caps are removable to

allow inspection of internal
clearances. Neoprene bushings
should be rotated to insure no short
circuits exist before systems are
activated.

DESIGN

¾ All direction seismic restraint

¾ Standard capacities of up to 2200
kgf force
¾ Restraint capacities to meet all
building code requirements
¾ May be bolted or welded in place
¾ Replaceable neoprene rubber
elements
¾ Easily inspected for short circuits
SSB4
RPL SSB SEP 16

Vibration Shock Seismic Control

ALL DIRECTIONAL SEISMIC SNUBBER SSB

1G ALL DIRECTIONAL LOAD RATINGS & DIMENSIONS

CODE 1G ALL DIMENSIONS EQUIPMENT RECOMMENDED
DIRECTIONAL ANCHOR BOLT ‘EAB’ SNUBBER BASE
RATED LOAD ≥ Gr. 8.8 ANCHOR BOLT ‘SAB’
(BY OTHERS)
Kgs A B C D E F G H T ≥ Gr. 8.8
SSB2 - 0110 110 Kgs 50 125 40 15 90 54 90 - 6 M12 X 100 M12
SSB2 - 0220 220 Kgs 70 180 50 15 100 60 100 - 6 M16 X 150 M12
SSB2 - 0450 450 Kgs 75 200 65 19 130 64 130 - 10 M20 X 150 M16
SSB2 - 0900 900 Kgs 125 300 75 23 150 76 150 - 12 M20 X 150 M20
SSB4 - 1350 1350 Kgs 120 300 125 23 250 83 160 95 10 M22 X 150 M20
SSB4 - 2200 2200 Kgs 150 380 150 28 300 89 160 120 10 M24 X 150 M24

INSTALLATION NOTES

1. Neoprene Bushings are 6mm thick through out.

2. All Operating Clearance are 6mm.
3. Set Base Anchor to protrude 19mm from face to face.
4. A continuous rod, threaded on each end and protruding 20mm from both the faces of the base may be
used to secure the threaded steel bushings in lieu of the individual Base Anchor Bolts.
5. Normal clearance between base & floor is 25 mm.
6. Distance from Base Anchor Bolt centerline to bottom of base is F minus 25mm.
7. When 50mm clearance between base and floor is specified, use 25mm spacer plate under snubber
angle.
8. Earthquake restraining angles are to be installed after equipment is in operation to insure design
clearances are maintained as follows :
a. Remove snubber bolt and washer.
b. Screw steel bushing on Equipment Anchor Bolt protrusion.
c. Pass Restraining Angle over steel bushing so it is centered horizontally.
d. Raise or lower base with spring adjustments or shim Restraining Angle so steel bushing is centered
vertically.
e. Set Restraining Angle so inside vertical face is 13mm clear of base and parallel to it.
f. Mark and set AB anchor bolts or weld angle in position.
g. Replace snubber bolt and washer and tighten in position.
9. Inspect and maintain clearances periodically and after every major seismic event.

For more detailed information and technical assistance, please contact our Applications Engineering Group.

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 Seismic Restrained Buffers
Type SRB

Seismic Buffers are designed for use in

earthquake prone areas which could
displace resiliently supported
equipment.
Snubber is a single-axis, single-
direction restraint specially designed to
restrict the lateral motion resulting from
external loads acting on resiliently
mounted equipments.
Snubbers, when anchored to the
building structure and properly
positioned around vibration-isolated
equipment, are intended to limit motion
by containing the movement of the
supported equipment.
Since relative motion can occur in any
direction, snubbers must be carefully
positioned to resist motion in all directions.
A resilient neoprene pad on the contact
surface reduces shock loads by cushioning
the impacts. Large diameter anchor bolt
holes allow loads to be safely transferred to
the building structure.
DESIGN
Building codes in many areas require
building components to be capable of
resisting forces created during a seismic
event.
Equipment on vibration isolators can
undergo large motions relative to the
building during such an event.
By using properly spaced and designed
resilient snubbers around the equipment,
motion can be limited and equipment can
remain in place.
Snubbers are rugged, heavy- duty products
which have been designed to resist
imposed forces from external sources, yet
remain out of contact during normal
operation so that vibration will not be
transmitted to the building. The steel
members of the snubbers are designed to
yield but not fail under design conditions.
APPLICATIONS
Ÿ Equipment
SCS 402 SRB SEP 16

Ÿ Equipment Bases
Ÿ Concrete Inertia Bases
Ÿ Structural Steel Supports

Vibration Shock Seismic Control

SEISMIC RESTRAINED BUFFERS SRB

G
G

A A

A B A B

H
E C E C
D
D
SRB SRB2

LOAD RATINGS & DIMENSIONS

CODE RATED D I M E N S I O N S (mm)
LOAD Rec. Anchor Bolts ‘AB’
(kgs) A B C D E G H (By others) Min Gr. 8.8
SRB - 0780 780 50 125 45 15 90 90 - M12
SRB - 1180 1180 58 150 37 15 75 75 - M12
SRB - 1260 1260 70 180 45 15 100 100 - M12
SRB - 1740 1740 75 200 65 19 130 130 - M16
SRB - 3140 3140 125 300 75 23 150 150 - M20
SRB - 6300 6300 120 300 75 27 150 150 - M24
SRB2 - 18900 18900 180 450 59 27 200 200 98 M24
SRB2 - 37800 37800 390 900 61 30 200 200 95
- M27

Installation Instructions

Snubbers include a resilient pad to cushion any impact. Snubbers shall be installed so as to be free of
contact during equipment operation.

Snubber is to be installed such that the resilient surface will contact a vertical surface on the side of the equipment or
base once the equipment has been displaced approximately (6mm) toward the restraint.

A minimum of four Snubbers are required on a given installation. These are to be installed at 90 degrees to one
another to ensure that there is no direction in which the equipment can move without contacting at least one snubber.

The Snubber should be fitted only after the isolated equipment is mounted, piped and operating. The Snubber should
be located with its face (6mm) clear of the equipment. Bolts, if used, should connect to structural steel capable of
withstanding the maximum loads that can be generated by the restrained equipment. Anchors should be installed in
accordance to applicable code standards.

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 



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Seismic Open Restrained Spring
Type SORS

Seismic open restrained spring isolators have a steel housing assembly to limit both
lateral and vertical movement of the supported equipment during an earthquake
without compromising the vibration isolation features during normal equipment
operating conditions.

DESIGN
Ÿ Vibration Isolation with seismic and wind restraint capabilities for mechanical equipments.
Ÿ All directional restraint with vertical limit stops.
Ÿ Epoxy coated coils & housing.
Ÿ Constant free height & operating height.
Ÿ Equipment motion limited to 5mm in all directions, at the isolator.

APPLICATION

Ÿ Noise and vibration isolation for mechanical equipment located near critically quiet areas in earthquake prone
areas.

Ÿ Combined coil spring isolator and seismic restraint for indoor and outdoor oor mounted fans, pumps, air
compressors and other mechanical equipments.

Vibration Shock Seismic Control

SEISMIC OPEN RESTRAINED SPRING SORS

TYPE SORS
PART NO. COLOUR RATED DEFLECTION D I M E N S I O N S (mm)
CODE LOAD at Rated Load
kgs (mm) +15%
A B C D E F G H J

SORS 20/10 PURPLE 10 20

SORS 20/15 YELLOW 15 20
SORS 20/20 GREY 20 20
100 160 65 175 10 M8 40 M6 55
SORS 20/40 GREEN 40 20
SORS 20/70 RED 70 20
SORS 15/100 BLUE 100 15
SORS 25/30 YELLOW 30 25
SORS 25/60 GREEN 60 25
SORS 25/100 BLUE 100 25 131 185 85 205 16 M12 50 M10 65
SORS 25/160 WHITE 160 25
SORS 25/230 RED 230 25
SORS 25/200 RED 200 25
SORS 25/300 PURPLE 300 25
SORS 25/400 GREY 400 25
SORS 25/500 ORANGE 500 25
SORS 25/600 BROWN 600 25 168 200 110 230 16 M16 54 M10 80
SORS 25/700 ORANGE/BLACK 700 25
SORS 25/800 BLACK 800 25
SORS 25/1000 BLACK/BLACK 1000 25
SORS 25/1200 BLACK/SILVER 1200 25

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Universal Expansion Joints Style
for Seismic Base Isolated Buildings RMEJ.UD

PN
(Bars)
PN 0.25 PN 10 PN 16

SIZE - 25 - 600 mm NB

A Universal Metal Expansion Joint consists

of two bellows joined by a common connector,
a configuration that absorbs any combination
of the three basic movements: axial, lateral;
and angular.

Universal Metal Expansion Joints are

normally provided with tie or control rods (a
tied universal expansion joint) to distribute the
movement between the two bellows of the
expansion joint and eventually to stabilize the
common connector. A tied universal
expansion joint can absorb large amounts of
lateral deflection while absorbing the pressure
thrust forces.

An important advantage of this type of

expansion joint is that the piping system does
not have to be in one plane, the two horizontal
legs may lie at any angle in the horizontal
plane.

An untied Universal Expansion Joint (without

tie or control rods) would be recommended for
the absorption of significant amounts of lateral
movement because this type of expansion
joint will minimize the magnitude of the forces
exerted on the anchors.

Universal Metal Expansion Joints for

BASE ISOLATED Buildings consists of two
Universal Joints at right angles connected
with a suitably designed elbow which is either
suspended from top or supported on a floating
trolley as shown in the conceptual sketches
overleaf.
MEJ 500 MUEJ APR 16

Seismic Isolation Systems

Universal Expansion Joints RMEJ.UD

Ceiling Suspended Universal Metal Expansion Joint for Base Isolated Buildings

Floor Supported Universal Metal Expansion Joint for Base Isolated Buildings

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Gimbal Expansion Joints Style
for Seismic Base Isolated Buildings RMEJ.GD

PN
(Bars)
PN 0.25 PN 10 PN 16

SIZE - 25 - 600 mm NB

Gimbal Expansion Joints are designed to

permit angular rotation in any plane by the
use of two pairs of hinges attached to a
common floating gimbal ring. The gimbal ring,
hinges and pins are designed to restrain the
thrust of the expansion joint due to internal
pressure and extraneous forces, when they
are present. This type of construction ensures
close control of the movement imposed on the
bellows. In case of external loadings such as
wind, shear and dead weight loads shall be
transmitted through the gimbal. Other
advantages include low forces and the
elimination of pressure thrust on adjacent
equipment.

Gimbal Expansion Joints are used either in

pairs or in combination with hinged expansion
joint to absorb complex multi-planar
movement in a piping system. Furthermore,
gimbal expansion joints offer the best possible
system for eliminating the effects of thermal
expansion; they minimize reaction forces
while simultaneously curtailing installation
costs because the expensive main anchors
are unnecessary since only minimal guiding is
required.
MEJ 501 GD APR 16

Seismic Isolation Systems

Gimbal EJ for Seismic Base Isolated Buildings RMEJ.GD

Concept for Base Isolated Building

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364


 Open Spring Mounts licensed in 1992 by

Type OSB, OS25 & OS50

This unique range of Open Spring

Mountings uses integral rubber end fixing of
the springs which set them apart from all
other designs which set them apart from all
other designs. Loose springs and plates are
now history and high frequency noise
attenuation is provided regardless of
whether a rubber seating pad is used or not.

The OS Mountings are widely used to

isolate vibration from every conceivable
type of rotating and reciprocating machine.
Where control of transient motion is
required Open Spring Mounting can be
used in conjuction with our Viscous
Dabpers Type SFD.

DESIGN FEATURES

l Unique expanding rubber end fixing of

springs (Patent applied for) which also
provides high frequency attenuation.

l Nominal 20, 25 & 50 mm deflection colour

coded springs with 50% overload capacity
and O/D equal to atleast 80% of the spring
compressed height at rated load.
TYPICAL INSTALLATION l Can be bolted to supporting structure or
free standing on cross ribbed acoustic
rubber pad.

l Fully height adjustable (OS25 & 50).

l Zinc plated metals.

l No snubbing gives maximum efficiency.

TYPICAL APPLICATION

Open Spring n AXIAL AND CENTRIFUGAL FANS

Mounts
n AIR HANDLING UNITS
Pump
n LOW LEVEL PIPEWORK

n WITH INERTIA BASES TYPE IPF FOR

PUMPS, GENERATING SETS AND
COMPRESSORS ETC.
HSI 412 LOS OCT 15

Blower in AHU on Open Spring Units

Vibration Shock Seismic Control

OPEN SPRING MOUNTS OS
OSB20/10 - OSB15/100
TECHNICAL CHARACTERISTICS
CODE SPRING RATED DEFLECTION DIMENSIONS (mm)
COLOUR LOAD at Rated Load
(kgs) (mm) +15% A B C D E F G H J

OSB 20/10 Purple 10 20

OSB 20/15 Yellow 15 20
OSB 20/20 Grey 20 20
68 - 32 - - M8 - 18 37
OSB 20/40 Green 40 20
OSB 20/70 Red 70 20
OSB 15/100 Blue 100 15
OSS 20/10 Purple 10 20
OSS 20/15 Yellow 15 20
OSS20/10 - OSS15/100 OSS 20/20 Grey 20 20
69 57 38 76 5 M8 M6 18 37
OSS 20/40 Green 40 20
OSS 20/70 Red 70 20
OSS 15/100 Blue 100 15
OS 25/30 Yellow 30 25
OS 25/60 Green 60 30
OS 25/100 Blue 100 25 115 85 70 110 10 M10 M8 20 57
OS 25/160 White 160 25
OS 25/230 Red 250 25
OS 25/200 Red 200 25
OS 25/300 Purple 300 25
OS 25/400 Grey 400 25 152 110 90 140 8 M16 M12 27 76
OS25/30 - OS25/2300 OS 25/500 Orange 500 25
OS50/100 - OS50/500 OS 25/600 Brown 600 25
OS 25/700 Orange/Black* 700 25
OS 25/800 Black 800 25
152 110 90 140 11 M16 M12 27 76
OS 25/1000 Black/Black* 1000 25
OS 25/1200 Black/Silver* 1200 25
OS 25/650 Yellow 650 26
OS 25/850 Green 850 27
176 165 130 200 18 M20 M16 42 130
OS 25/1050 Blue 1050 26
OS 25/1250 White 1250 26
OS 25/1300 Red 1300 27
OS 25/1600 Purple 1600 75
225 210 150 250 18 M24 M16 52 150
OS 25/2000 Grey 2000 26
OS 25/2300 Brown 2300 29
OS 50/100 Yellow 100 50
OS 50/200 Green 200 50
OS 50/300 Blue 300 50 180 110 90 140 11 M16 M12 24 76
OS 50/400 White 400 50
OS 50/500 Red 500 50
* Internal nested spring

INSTALLATION NOTES
vRibbed rubber seating pads should always be used when the mounting is seated on concrete or other
rough surfaces.
vWhen using height adjuster at least 3 full threads should be left protruding below the upper plate.
vAll connections to the mounted equipment must include flexible sections offering the maximum
practical flexibility to ensure that isolation efficiency is not impaired, also to avoid possible failure of
the connections.
INSTALLATION MANUAL vDO NOT use Open Spring Mountings for external applications without independent restraints.
Refer to IM 027 for detailed vFor further applications where control of transient motion is required, e.g. during start up and run
Installation Instructions down of large machines, additional mass and viscous dampers may be necessary.

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Enclosed Spring Mounts licensed in 1992 by

Type ES - Enclosed Spring & ECS - Enclosed Captive Spring

A unique range of mountings designed

primarily for building services applications
where the control of low frequency vibration
and noise emanating from mechanical plant
is of paramount importance.

The benefits of a combined rubber and steel

housing for the spring have helped establish
the ES and ECS mountings as industry
standards accepted by specifiers,
equipment manufacturers and mechanical
services installers alike.

DESIGN FEATURES

n Nitrile rubber (oil resistant) lower

spring housing eliminates the
possibility of metallic continuity and
ensures excellent acoustic
performance. Steel reinforced on ECS
range.
n Full enclosed captive assembly
protects the spring and controls
transient motion.
n All steel components zinc plated.
n Spring with nominal deflections of 20,
TYPICAL INSTALLATION 25 & 50 mm, laterally stable and with
50% overload capacity.
n Simple single bolt height adjustment.
n Spring viewing/inspection hole and
ribbed rubber seating pads available
for ES25 and ECS ranges.
n Colour coded labels for easy
identification.

TYPICAL APPLICATIONS
n Axial and Centrifugal Fans
n Air Handling Units
n Chillers and Cooling Towers
n Rotary and Multi Cylinder
Compressors
n Diesel Generating Sets (ECS only)
n Mechanical Test Rigs
n Isolation of Sensitive Equipment
HSI 416 LES SEP 15

Cooling Tower

Vibration Shock Seismic Control

ENCLOSED SPRING MOUNTS ES / ECS

TECHNICAL CHARACTERISTICS
CODE COLOUR RATED DEFLECTION NOMINAL DIMENSIONS (mm)
CODE LOAD at Rated Load
(kg) (mm) +15% A B C D E F G I
ES-20/10 Purple 10 20
ES-20/15 Yellow 15 20
ES-20/20 Grey 20 20
63 54 60 76 38 M8 48 M6
ES-20/40 Green 40 20
ES-20/70 Red 70 20
ES-15/100 Blue 100 15
ESB-20/10 Purple 10 20
ESB-20/15 Yellow 15 20
ESB-20/20 Grey 20 20
65 - - - - M8 48 -
ESB-20/40 Green 40 20
ESB-20/70 Red 70 20
ESB-15/100 Blue 100 15
ES-25/30 Yellow 30 25
ES-25/60 Green 60 30
ES-25/100 Blue 100 25 88 85 90 110 70 M10 78 M8
ES-25/160 White 160 25
ES-25/250 Red 250 25
ECS-25/200 Red 200
ECS-25/300 Purple 300
ECS-25/400 Grey 400
ECS-25/500 Orange 500
ECS-25/600 Brown 600
25 127 130 150 180 95 M16 111 M12
ECS-25/700 Black 700
ECS-25/800 Black 800
ECS-25/1000 Blue 1000
ECS-25/1200 Blue/Black* 1200
ECS-25/1400 Blue/Silver* 1400
ECS-50/100 Yellow* 100
ECS-50/200 Green* 200
ECS-50/300 Blue* 300 50 155 130 150 180 95 M16 111 M12
ECS-50/400 White* 400
ECS-50/500 Red* 500
* Internal nested spring

INSTALLATION NOTES ISOLATION EFFICIENCY AT TYPICAL MACHINE SPEEDS

n Correct fixing to equipment with MACHINE EFFICIENCY %

locknut tightened SPEEDS
n Adjusting/fixing screw MUST be (rpm) 15 mm DEFL. 25 mm DEFL. 50 mm DEFL.
wound down sufficiently so that 300 DO NOT USE 34.0 75.2
the spring pressure is felt before
tightening the locknut 500 68.7 83.3 92.3
n For height adjustment, continue 750 88.1 93.2 96.7
winding the adjustment screw 1000 93.7 96.3 98.2
down, thus raising the upper
1200 95.5 97.4 98.7
spring cover BUT DO NOT adjust
by more than the original 1500 97.3 98.4 99.2
deflection obtained when the load 1750 98.0 98.8 99.4
was applied to the mounting
2000 98.5 99.1 99.5
INSTALLATION MANUAL These figures assume infinitely stiff structural support.
Refer to IM 026 for detailed High frequency spring coil resonance effects are ignored.
Installation Instructions

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Open Restrained Spring licensed in 1992 by

Type ORS

The ORS mounting has been designed specifically

for applications where transmission of low frequency
machinery vibration to a building structure must be
reduced to avoid physical damage or annoyance to the
the occupants. Vertical and lateral restraint is provided
to control movement of the mounted equipment when
subjected to external forces. This could otherwise
be excessive due to the low stiffness springs
required to provide isolation of low frequency
vibration.
Equipment located at roof level can be
successfully mounted on the ORS units as any
movement caused by high wind loads will be
limited. Cooling Towers and chillers which contain
large volumes of liquid will benefit from installation
on ORS mountings because during "draining
down" upward movement is restricted thus
avoiding damage to pipework and electrical
connections.

DESIGN FEATURES

High strength all steel construction.

Colour coded helical steel springs with

nominal deflections of 25mm and 50mm
and up to 50% overload capacity.
TYPICAL INSTALLATION
Vertical and lateral restraints have rubber
inserts to avoid any metallic contact and
adequate radial clearance ensures
isolation efficiency is not impaired.

Spring located using rubber sleeved pegs

and seated on a rubber washer to
reduce high frequency transmission.

Working height and vertical limiting stops

Refrigerant Chiller Cooling Tower
are fully adjustable.

6 mm thick cross ribbed rubber seating

pad supplied as standard.
HSI 422 ORS NOV 16

Vibration Shock Seismic Control

OPEN RESTRAINED SPRING ORS

TYPE ORS MOUNTINGS - SIZE ORS 25

PART NO. COLOUR RATED DEFLECTION DIMENSIONS mm WT.
CODE LOAD AT (kg.)
kg RATED Max.
LOAD A B C D E F G H J K
mm
ORS25/200 RED 200 25
ORS25/300 PURPLE 300 25
ORS25/400 GREY 400 25
ORS25/500 ORANGE 500 25
ORS25/600 BROWN 600 25 168 200 110 230 16 M16 40 M10 80 42 6
*
ORS25/700 ORANGE/BLACK 700 25
ORS25/800 BLACK 800 25
ORS25/1000 BLUE 1000 25
*
ORS25/1200 BLUE/BLACK 1200 25
ORS25/650 YELLOW 650 27
ORS25/850 GREEN 850 25
196 280 150 310 21 M20 50 M12 120 45 14
ORS25/1050 BLUE 1050 25
ORS25/1250 WHITE 1250 25
ORS25/1300 RED 1300 27
ORS25/1600 PURPLE 1600 25
234 280 180 330 21 M24 50 M16 140 45 20
ORS25/2000 GREY 2000 26
ORS25/2300 BROWN 2300 29

TYPE ORS MOUNTINGS - SIZE ORS 50

PART NO. COLOUR RATED DEFLECTION DIMENSIONS mm WT.
CODE LOAD AT (kg.)
kg RATED Max.
LOAD A B C D E F G H J K
mm
ORS50/100 Yellow 100 50
ORS50/200 Green 200 50
ORS50/300 Blue 300 50 168 200 110 230 16 M16 40 M10 80 42 6
ORS50/400 White 400 50
ORS50/500 Red/Black 500 50
ORS50/510 Black/Purple 510 51
ORS50/760 Black/Grey 760 51
240 280 180 330 21 M24 50 M16 140 51 18
ORS50/1000 Black/Orange 1000 50
ORS50/1300 Black/Brown 1300 53
* Internal nested spring
ISOLATION EFFICIENCY AT TYPICAL MACHINE SPEEDS
MACHINE SPEEDS EFFICIENCY %
Spring Deflection (rmp) The figures on the left are theoretical values only
Spring stiffness is linear over its actual working range therefore, 25 mm DEFL. 50 mm DEFL. based on the vertical natural frequency of the
the actual deflection for a given load can be calculated as follows: 300 34.0 75.2 sprung system assuming infinitely stiff structural
500 83.3 92.3 supports.
Actual Load (Kg)
Actual Deflection (mm) = Rated Load (Kg) x Rated Deflection (mm) 750 93.2 96.7
The effects of high frequency coil resonances on
low frequency performance are also ignored.
1000 96.3 98.2
1200 97.4 98.7
1500 98.4 99.2

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

  
    
    

 
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 Cup Spring Mounts
Type CS & CSB

LOAD upto 910Kg

DEFLECTION upto 50 mm
4 STANDARD SIZES
49 LOAD RANGES

An all purpose heavy-duty open metal spring

mounting with Neoprene acoustical cups for
high efficiency Isolation of low frequency
vibrations.

Used directly under most HVAC equipments or

in conjuction with structural steel bases or
concrete inertial blocks for reducing vibration
amplitudes.

QUICKLY AND EASILY INSTALLED

Free standing-bottom base cup with non-skid

surface eliminates need for bolting down the
isolator (CS). Where essential for bolting down,
mountings are available with BASE PLATE
having slotted holes. While ordering use
SUFFIX-B.
TYPICAL INSTALLATION
BUILT-IN LEVELLING device furnished with
locking cap screw and washer in the top cup for
attachment to equipment.

WELD-LESS CONSTRUCTION - Spring coils

are not welded to steel plates. Mounts are
supplied in fully assembled condition.

LOW AND SAFE OPERATING STRESSES for

Cup Spring Cup Spring long life-minimum additional travel to solid equal
Mounting Mounting
to 50% of rated deflection to accommodate
weight distribution errors-springs will not exceed
elastic limit.

LATERALLY STABLE without housing, snubbers

Chiller or guides.

TYPICAL APPLICATIONS ACOUSTICAL RUBBER CUPS with steel

• AIR CONDITIONERS • AIR HANDLING UNITS reinforcement and tight grip at top and bottom of
• BLOWERS • COOLING TOWERS spring for attenuation of high frequency noise
HSI 414 LCS SEP 15

• CHILLERS • COMPRESSORS and for maintaining rigidity / alignment with

• CONDENSORS • FANS spring ends.
• FLOOR PIPING • HEATING & VENTILATING
SUPPORTS UNITS
• PUMPS • SPLIT UNITS
• PACKAGE AIR CONDITIONERS
Vibration Shock Seismic Control
CUP SPRING MOUNTS CS & CSB

TYPE CS TYPE CSB

TECHNICAL CHARACTERISTICS
PRODUCT SPRING COLOUR RATED DEFLECTION D I M E N S I O N S (mm)
CODE LOAD at Rated Load
TYPE CS TYPE CSB
OUTER INNER (kgs) (mm) +15% A B D E A L W R S
CS50-020 BLUE - 020 25
CS50-040 ORANGE - 040 29
CS50-060 BROWN - 060 25
CS50-100 BLACK - 100 21 117 60 M16 M10X25 120 115 63 89 11
CS50-140 YELLOW - 140 17
CS50-160 RED - 160 10
CS50-250 GREEN - 250 9
CS63-040 BROWN - 040 23
CS63-080 ORANGE - 080 25
CS63-120 GREEN - 120 25
CS63-160 RED - 160 24
114 73 M16 M10X25 147 123 76 101 13
CS63-220 BLACK - 220 24
CS63-270 WHITE - 270 22
CS63-330 GREY - 330 20
CS63-400 BLUE - 400 18
CS82-250 RED - 250 22
CS82-280 RED PINK 280 22
CS82-310 RED BLUE 310 22
CS82-330 RED YELLOW 330 22
CS82-380 GREEN - 380 23
CS82-420 GREEN BLACK 420 23
CS82-460 GREEN YELLOW 460 23
CS82-500 GREEN BROWN 500 23
173 95 M22 M12X30 180 155 101 127 15
CS82-550 GREEN RED 550 23
CS82-580 GREY - 580 20
CS82-620 GREY BLACK 620 20
CS82-640 GREY BLUE 640 20
CS82-700 GREY BROWN 700 20
CS82-800 GREY PURPLE 800 20
CS82-850 GREY ORANGE 850 20
CS82-910 GREY GREEN 910 20
* ALL MOUNTS HAVE APPROXIMATELY 50% OVERLOAD CAPACITY
* MOUNTING CSB IS STYLE CS BUT WITH AN ADDITIONAL BASE PLATE

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Housed Spring Mountings
Type HS

HOUSED SPRING MOUNTINGS consist of

high deflection, colour coded steel springs
assembled into telescoping cast housings
separated by Neoprene Rubber inserts
complete with built-in levelling bolt and thick
Neoprene acoustical friction pad to eliminate
bolting down. Rubber inserts isolate sound
weves generated in springs, limit movement
during start-up and shut down and provide
minimum damping in all directions to allow
springs to function independently.
Ideally suited for high horizontal thrust
applications and low frequency vibration
problems.
DESIGN FEATURES
LOAD upto 2160 Kgs.
DEFLECTION upto 25 mm
3 SIZES
26 LOAD RANGES
Mountings are available in three versions
with and without dampers.
EXTERNAL LEVELLING (SUFFIX : E) for
well centered equipment mounting holes with
access for levelling from avove (standard).
INTERNAL LEVELLING (SUFFIX : l) are
used when extarnal setting is not possible.
Mounting is aligned with equipment mounting
hole and levelled by an internal bolt.
FREE STANDING (SUFFIX : F) has a non-
skid friction rubber pad cold bonded to top
surface and an internal levelling bolt.
DAMPED MOUNTING (SUFFIX : D) All
versions also available with built-in adjustable
Dampers. Damping is varied by altering the
pressure on the rubber insert by adjusting the
dampening bolt. Tightening the dampers
reduces vertical movement, limits bounce,
controls side motion and rock. Wear is
negigible as damping is provided by the
viscous distortion of the Neoprene inserts
rather than by friction.
TYPICAL APPLICATIONS
Air Handling Units
Blowers
Compressors
Centrifugal Fans
Drop Hammers
Cooling Towers
Chillers
HSI 410 LHS SEP 15

Pumps
Punch presses
DG Sets

Vibration Shock Seismic Control

HOUSED SPRING MOUNTINGS HS

TECHNICAL CHARACTERISTICS
PRODUCT SPRING RATED DEFLECTION
CODE COLOUR LOAD at Rated Load
kgs. mm

HS1-E / 030 Pink 030 27

HS1-E / 040 Black 040 25
HS1-E / 060 Blue 060 25
HS1-E / 080 Yellow 080 25
HS1-E / 120 Brown 120 25
HS1-E / 170 Red 170 25
HS1-E / 220 Purple 220 25
HS1-E / 270 Orange 270 22
HS1-E / 330 Green 330 20
HS1-E / 400 Grey 400 16
HS1-E / 470 White 470 16
HS1-E / 540 Gold 540 14

PRODUCT SPRING RATED DEFLECTION

CODE COLOUR LOAD at Rated Load
kgs. mm
HS2-E / 340 RED 340 25
HS2-E / 440 PURPLE 440 25
HS2-E / 540 ORANGE 540 22
HS2-E / 660 GREEN 660 20
HS2-E / 800 GREY 800 16
HS2-E / 940 WHITE 940 16
HS2-E / 1080 GOLD 1080 14

PRODUCT SPRING RATED DEFLECTION

CODE COLOUR LOAD at Rated Load
kgs. mm
HS4-E / 680 RED 680 25
HS4-E / 880 PURPLE 880 25
HS4-E / 1080 ORANGE 1080 22
HS4-E / 1320 GREEN 1320 20
HS4-E / 1600 GREY 1600 16
HS4-E / 1880 WHITE 1880 16
HS4-E / 2160 GOLD 2160 14
All dimensions are approximate in millimetres All figures are nominal for information only

— Deflection is at rated load with ±15% tolerance.

— Mountings have approximately 50% overload capacity.
— 6 mm acoustical non-skid Neoprene Pad is provided on the base of the Mountings.
— Mountings must be adjusted so that upper housing clears lower housing by at least 6 mm
and not more than 12 mm.

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Housed Spring Mounting Vibration Shock Seismic Control

TYPES

RPL ADS ACR 630 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Housed Spring Mounting Vibration Shock Seismic Control

MOUNTING ARRANGEMENT - STEEL BASES

RPL ADS ACR 640 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Housed Spring Mounting Vibration Shock Seismic Control

MOUNTING ARRANGEMENT - REINFORCED CONCRETE BASES

RPL ADS ACR 641 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Spring Damper Systems licensed in 1992 by

Type SDS

Reciprocating machinery creates large

vibration forces which require isolation
from the surrounding building structure.
Large forces or doubtful machine stability
may require the use of an inertia block of
steel or concrete to provide low dynamic
amplitude on the machine whilst providing
a stable and stiff base supported by steel
OSD4
OSD2 springs and dampers. Where system
resonances may be excited to
unacceptable amplitude due to the varying
speed of the machine or transient
conditions, damping must be incorporated.

ACTIVE ISOLATION OF
* BOILER FEED PUMPS
* COAL CRUSHERS * CENTRIFUGES
PSD30
* COMPRESSORS * D.G. SETS
* ENGINE TEST BEDS
* FANS & BLOWERS
* FORGING HAMMERS
* FRAGMENTIZERS * POWER PRESSES
* PULVERIZERS * PILE DRIVERS
* ROLLING MILLS * TURBINES BALL
SFD
MILLS * TURBO GENERATORS
SFD D3
PASSIVE ISOLATION OF
TYPICAL INSTALLATION * ANECHOIC CHAMBERS * BUILDINGS
* FINISHING LATHES * LABORATORIES
* MEASURING EQUIPMENTS
* METROLOGY CHAMBERS
* ROLL GRINDERS * SLABS
* TEST & LABORATORY EQUIPMENTS

SYSTEM MASS - up to several hundred

tonnes

LOAD / ISOLATOR - up to 100 Tons

DAMPING - up to 40% of Critical Damping

Each system is individually designed and

analyzed to ensure that the correct spring
stiffnesses, system damping and masses
are provided to permit proper operation of
1600 MM Joflo Centrifuge in Pharmaceutical Plant at Vizag the mounted equipment.

First introduced in 1950 by our

collaborators CHRISTIE & GREY LTD.,
ENGLAND, AN ISO 9001 Certified
SDS 120 GML SEP 15

Company, these systems are now used

world-over.

1050 KVA 700 RPM Marine DG Set at Omax Auto, Gurgaon

Vibration Shock Seismic Control

 licensed in 1992 by

Pre-Compressed Spring Damper

Type PSD - 30

“PSD” series are very low frequency and

very high Viscous Damping Units fitted
with a pre- compression device to facilitate
adjustment at site and easy
installation/removal.

The Isolator can be pre- compressed to its

loaded height before installation using
Jacks if required, and held in pre-
compression by the Tie Bars. Once the
equipment is installed, pre-compression is
released by loosening the Tie-Bars.

Top and/or Bottom Friction pads for

obviating the need of anchoring (bolting)

Also available for bolting to the floor and/or

supported equipment.

· Load capacity up to 25000 Kgs

· Resonance frequency: 3 Hz to 5 Hz
· Damping: 8%-15% of critical
· High radial stiffness to axial stiffness
ratio

APPLICATIONS
PASSIVE ISOLATION of major civil
engineering structures such as:

· ANECHOIC CHAMBERS
· BUILDINGS
· LABORATORIES
· METROLOGY CHAMBERS
· SLABS
· ETC., ETC.

ACTIVE ISOLATION of large size rotating

machines with or without inertial block
running at speeds down to 350 rpm and
developing very high dynamic forces
(unbalance, short-circuit, couples) such as
:

· CENTRIFUGES
165 MT Elecon Coal Crusher on · FORGING HAMMERS
5 Storey Steel Tower at · COMPRESSORS
GEB Wanakbori TPS · PUMPS
· CRUSHERS
· PRESSES
· FANS
View from below
· PILE-DRIVERS
HSI 430 PSD FEB 13

· ETC., ETC

Vibration Shock Seismic Control

TECHNICAL CHARACTERISTICS
CODE NO. RATED EFFECTIVE HEIGHT AT HEIGHT AT VERTICAL HORIZONTAL VERTICAL HORIZONTAL
LOAD DEFLECTION DELIVERY RATED LOAD STIFFNESS STIFFNESS DAMPING DAMPING
COEFFICIENT COEFFICIENT
±15% HD HL SV SH DV DV
(kgf) (mm) (mm) (mm) (N/m/s) (N/m/s)
SMPSD4/30/10800 10800 30 350 350 3528 2876 23990 10740
SMPSD6/30/16200 16200 30 375 350 5292 4314 23900 10740
SMPSD8/30/21600 21600 30 375 350 7056 5752 23900 10740
(All figures are nominal for information only)

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Open Spring Damper 2 licensed in 1992 by

Type OSD2

SYSTEM MASS - up to several tonnes

LOAD / ISOLATOR - up to 4100 Kgs

DAMPING - up to 40% of Critical Damping

Each system is individually designed and

analyzed to ensure that the correct spring
stiffnesses, system damping and masses
are provided to permit proper operation of
the mounted equipment.

ACTIVE ISOLATION OF :

* BOILER FEED PUMPS

* CENTRIFUGES
* COMPRESSORS
* D.G. SETS
* ENGINE TEST BEDS
* FANS & BLOWERS
* FRAGMENTIZERS
* POWER PRESSES
* PILE DRIVERS
* PULVERIZERS

1050 KVA 700 RPM Marine DG Set at Omax Auto, Gurgaon

HSI 418 OSD SEP 15

Vibration Shock Seismic Control

 TECHNICAL CHARACTERISTICS
CODE COLOUR LOAD DEFLECTION APPROX. DIMENSIONS (mm)
CODE RANGE ± 15%

LA WB HC AD BE
(kgs) (mm)
25 MM DEFLECTION
OSD2-25/400 RED 80-400 5-25
OSD2-25/600 PURPLE 120-600 5-25
OSD2-25/800 GREY 160-800 5-25
OSD2-25/1000 ORANGE 200-1000 5-25
300 125 140 135 95
OSD2-25/1200 BROWN 240-1200 5-25
OSD2-25/1400 ORANGE/BLACK 280-1400 5-25
OSD2-25/1600 BROWN/BLACK 320-1600 5-25
OSD2-25/2000 BLACK/BLACK 400-2000 5-25
OSD2-25/2400 BLACK/BLACK 480-2400 5-25
OSD2-25/3900 GREY 2300-3900 5-25
450 150 187 150 120
OSD2-25/4100 BROWN 2400-4100 5-25
50 MM DEFLECTION
OSD2-50/200 YELLOW 40-200 10-50
OSD2-50/400 GREEN 80-400 10-50
OSD2-50/600 BLUE 120-600 10-50 300 125 163 135 95
OSD2-50/800 WHITE 160-800 10-50
OSD2-50/1000 RED/BLACK 200-1000 10-50
OSD2-50/1500 BLACK/GREY 300-1500 10-50
OSD2-50/2000 BLACK/ORANGE 400-2000 10-50 450 150 187 150 120
OSD2-50/2600 BLACK/BROWN 520-2600 10-50

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Open Spring Damper 4 licensed in 1992 by

Type OSD4

SYSTEM MASS - up to several tonnes

LOAD / ISOLATOR - up to 8200 Kgs

DAMPING - up to 40% of Critical Damping

Each system is individually designed and

analyzed to ensure that the correct spring
stiffnesses, system damping and masses
are provided to permit proper operation of
the mounted equipment.

ACTIVE ISOLATION OF :

* BOILER FEED PUMPS

* CENTRIFUGES
* COMPRESSORS
* D.G. SETS
* ENGINE TEST BEDS
* FANS & BLOWERS
* FRAGMENTIZERS
* POWER PRESSES
* PILE DRIVERS
* PULVERIZERS
HSI 420 OSD SEP 15

Isolators in Pit for 1500 KVA 51 MT DG Set at MTNL, Delhi

Vibration Shock Seismic Control

 TECHNICAL CHARACTERISTICS
CODE COLOUR LOAD DEFLECTION DIMENSIONS (mm)
CODE RANGE

(kgs) (mm) L W H A

25 MM DEFLECTION
OSD4-25/2000 ORANGE 400-2000 5-25
OSD4-25/2400 BROWN 480-2400 5-25
OSD4-25/2800 ORANGE/BLACK 560-2800 5-25 300 200 140 260
OSD4-25/3200 BLACK 640-3200 5-25
OSD4-25/4000 BLACK/BLACK 800-4000 5-25
OSD4-25/4800 BLACK/BLACK 960-4800 5-25
OSD4-25/7800 GREY 1500-7800 5-25
450 350 187 300
OSD4-25/8200 BROWN 1640-8200 5-25
50 MM DEFLECTION
OSD4-50/1200 PURPLE 240-1200 10-50
OSD4-50/1600 GREY 320-1600 10-50 300 200 163 260
OSD4-50/2000 ORANGE 400-2000 10-50
OSD4-50/3000 BLACK/GREY 600-3000 10-50
OSD4-50/4000 BLACK/ORANGE 800-4000 10-50 400 320 187 360
OSD4-50/5200 BLACK/BROWN 1040-5200 10-50

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Combined Spring Damper
licensed in 1992 by

Type CSD

Rotating machinery creates large vibration

forces which require isolation from the
surrounding building structure. Large
forces or doubtful machine stability may
require the use of an inertia block of steel or
concrete to provide low dynamic amplitude
on the machine whilst providing a stable
and stiff base supported by steel springs
and dampers. Where system resonances
may be excited to unacceptable amplitude
due to the varying speed of the machine or
transient conditions, damping must be
incorporated.

LOAD / ISOLATOR - up to 3200 Kgs

DAMPING - up to 40% of Critical Damping

Each system is individually designed and

analyzed to ensure that the correct spring
IDEAL FOR stiffnesses, system damping and masses
are provided to permit proper operation of
CENTRIFUGES the mounted equipment.

First introduced in 1950 by our collaborators

CHRISTIE & GREY LTD., ENGLAND, AN
ISO 9001 Certified Company, these
systems are now used world-over.

1600 MM
Joflo Centrifuge
in Pharmaceutical Plant
at Vizag
HSI 440 CSD OCT 16

12 MT
Sukhras Centrifuge
& RCC Block at
Daurala Organics
TECHNICAL CHARACTERISTICS
CODE LOAD EFFECTIVE NOMINAL DIMENSIONS
RANGE DEFLECTION
L W H* CRS D T
Kg (mm) (mm) (mm) (mm) (mm) (mm) (mm)
CSD 1-100/0380 196-380 70-100
CSD 1-100/0450 215-450 70-100
CSD 1-100/0600 420-600 70-100
360 250 377 300 22 M24
CSD 1-100/0825 578-825 70-100
CSD 1-100/1025 718-1025 70-100
CSD 1-100/1250 875-1250 70-100
CSD 3-100/1250 875-1250 70-100
CSD 3-100/1680 1176-1680 70-100
CSD 3-100/1800 1250-1800 70-100 400 280 327 340 26 M36
CSD 3-100/2450 1715-2450 70-100
CSD 3-100/3200 2240-3200 70-100

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

     
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Inertia Pouring Frame Vibration Shock Seismic Control

INSTALLATION INSTRUCTION

RPL ADS ACR 642 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Rails Vibration Shock Seismic Control

TMR RAILS has been designed for extending equipment

bases of light equipment especially for basement locations.
Rails also give rigidity to base that require supplementary
stiffening between mounting positions

Rails compensate for over-hang and also improve weight

distribution on the Vibration Mountings

Rails are particularly useful for Close Coupled Pumps and

small vent sets

Rails are structural steel channels pre-fitted with TURRET

MOUNTING with bottom friction surface. They normally
need not be bolted to the supporting structure. However,
holes are provided where bolting down is essential

RPL ADS ACR 523 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Turret Rubber Mounts licensed in 1992 by

Type RM

RM rubber mountings are designed to provide

superior attenuation of medium to high frequency
vibration and noise emanating from a wide range
of motor driven machines particularly axial and
centrifugal fans. High resilIence rubber with low
dynamic to static stiffness ratio ensures maximum
efficiency, good creep performance and long
service life.

DESIGN FEATURES

Moulded in first grade natural rubber with

integral steel base and upper fixing boss.

Also available with oil & environment

resistant durable Neoprene.

Manufactured in three sizes, each

available in three rubber compounds
identified by a colour spot.

Static deflections of up to 8 mm with loads

from 5 kg to 400 kg.

TYPICAL INSTALLATION Optional height adjusters also available.

TYPICAL APPLICATIONS

Axial & Centrifugal Fans

Air Handling Units
Air conditioning Equipments
Packaged Air Conditioners
Floating Floors
Generators
Mobile Equipments
Pumps
Refrigeration Plants
Rotary and Multi Cylinder Compressors
Pump Pump
Note : Turret mountings should not be used on
machines exhibiting high out of balance forces
without restraining bolt.
RMM 412 LRM SEP 15

AHU Outdoor Airconditioning Unit

Vibration Shock Seismic Control
TURRET RUBBER MOUNTS RM

If bolting is No bolting If bolt hole is

preferred required inaccessible
Mountings are Mountings may be Use set screw
furnished with a used without threaded up from
tapped hole in the bolting under under side, "h" must
centre. This machines having exceed maximum Mobile Mounting
A restraining bolt is required for mobile and
enables the no lateral or m o u n t i n g
marine applications to control inertia forces.
equipment to be severe vertical defelection.
Mobile mountings have the same load
bolted securely to motion.
deflection characteristics as the stationary
the mounting. Mountings.

TECHNICAL CHARACTERISTICS
CODE COLOUR RATED DEFLECTION NOMINAL DIMENSIONS (mm) APPROX.
CODE LOAD at Rated Load WT.
(mm) +15%
(kg) (mm) A B C D E F G H J K L M (kg)
19.100.Y Yellow 28
19.100.B Blue 50 6 80 57 45 9 12 32 5 41 M8X20 42 13 18 0.11
19.100.R Red 80
19.101.Y Yellow 110
19.101.B Blue 180 8 95 71 60 9 14 45 5 56 M10X25 56 18 28 0.25
19.101.R Red 280
19.102.Y Yellow 150
19.102.B Blue 260 8 150 115 86 11 22 70 6 82 M12X30 83 27 38 0.73
19.102.R Red 400
Load / Deflection and Isolation Efficiency Graphs

l Tolerance on Deflection at Rated Load is +15 %

l Above part number requires standard upper fixing screw

size J

l For height adjustable variant add suffix HA after part

number
Deflection (mm)

l Maximum height adjustment available is 10mm with .HA

variant

Load (Kg) Isolation Efficiency (%)

Isolation efficiency is based on dynamic rather than static

stiffness for accurate calculation of system performance.

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Circular Vibration & Shock Isolator
Type CMS

RESISTOFLEX CIRCULAR ISOLATORS,

also known as BOBBIN MOUNTINGS, are simple
low cost versatile Isolators of rugged construction
for use in wide variety of applications to ease
misalignment problems; permit relative movement
as in vibratory rollers, shifting & grading machines;
as well as a mounting to protect instruments &
light equipments and Isolate heavy machines from
the harmful effects of Vibration, Shock and Noise.

LOAD : 1 KG TO OVER 800 KGS.

DEFLECTION : UPTO 15 MM

Isolators can be loaded in :

TYPICAL APPLICATIONS

I AIR CONDITIONING EQUIPMENTS

I BLOWER
I BUSINESS MACHINES
I COMPRESSORS
VARIANTS I CONTROL PANEL
I ENGINES
I FANS
I GENERATORS
I LABORATORY INSTRUMENTS
I PUMPS ETC. ETC.
RMM 432 CMS MAR 16

Vibration Shock Seismic Control

 TECHNICAL CHARACTERISTICS
TYPE MAX LOAD & DEFLECTION (±15%) DIMENSIONS (mm)

COMPRESSION SHEAR
CODE No. SO ME SO ME
D H Ø L E
kg mm kg mm kg mm kg mm
CMS 0607* 1.2 0.4 2.0 0.4 0.5 1.0 0.7 1.0 6 7 M4 10 -
CMS 1008* 1.9 0.6 3.9 0.6 1.0 1.4 1.8 1.4 10 8 M4 10 4
CMS 1010* 1.0 0.8 3.1 0.7 0.9 1.9 1.7 1.9 10 10 M4 10 4
CMS 1508 6.2 0.6 10.4 0.6 2.3 1.4 4.4 1.4 15 8 M4 10 4
CMS 1515 4.1 1.3 9.2 1.2 2.0 3.2 3.8 3.1 15 15 M4 13 4
CMS 1520* 4.1 1.9 9.2 1.8 1.6 4.4 3.0 4.4 15 20 M4 13 4
CMS 2015 9.2 1.2 20.2 1.2 4.1 2.8 7.4 2.7 20 15 M6 15 6
CMS 2020 8.2 1.8 17.3 1.7 3.8 4.0 6.9 4.0 20 20 M6 15 6
CMS 2025 7.1 2.2 16.3 2.1 3.1 5.1 5.6 5.2 20 25 M6 15 6
CMS 2510 30.0 0.7 53.0 0.6 6.7 1.5 12.2 1.5 25 10 M6 18 6
CMS 2515 16.3 1.2 33.0 1.1 6.5 2.8 11.9 2.7 25 15 M6 18 6
CMS 2520 14.3 1.9 30.0 1.7 6.2 4.0 11.4 4.0 25 20 M6 18 6
CMS 2530* 11.2 2.8 26.0 2.9 4.8 6.5 8.9 6.5 25 30 M6 18 6
CMS 3015 29.0 1.2 54.0 1.1 9.6 2.8 17.3 2.7 30 15 M8 20 8
CMS 3020 20.0 1.7 45.0 1.7 9.2 4.0 17.0 4.0 30 20 M8 20 8
CMS 3030 17.0 2.9 38.0 2.6 8.2 6.5 15.1 6.5 30 30 M8 20 8
CMS 3525* 26.6 2.4 54.4 2.2 12 5.5 22 5.5 35 25 M8 20 8
CMS 4030 35 2.9 71 2.6 16 6.5 29 6.5 40 30 M8 23 8
CMS 4035 33 3.4 69 3.1 15 7.8 28 7.7 40 35 M8 23 8
CMS 4040* 31 4.0 66 3.6 14 9.0 26 8.9 40 40 M8 23 8
CMS 4540* 41 3.9 89 3.5 19 8.8 35 8.7 45 40 M10 28 10
CMS 5020 102 1.5 194 1.4 27 3.5 49 8.8 50 20 M10 28 10
CMS 5030 61 2.6 133 2.8 25 6.0 48 6.0 50 30 M10 28 10
CMS 5040 51 3.7 112 3.5 24 8.5 45 8.4 50 40 M10 28 10
CMS 5045* 49 4.2 102 4.3 23 9.5 42 11.0 50 45 M10 28 10
CMS 5050* 49 4.9 102 4.3 22 11.0 42 11.0 50 50 M10 28 10
CMS 6540 87 3.7 204 3.5 41 8.5 96 8.4 65 40 M10 28 10
CMS 7045 112 4.3 234 4.0 50 9.7 92 9.7 70 45 M10 30 10
CMS 7525 255 2.1 459 1.9 61 4.8 112 4.7 75 25 M12 37 12
CMS 7540 143 3.7 296 3.4 58 8.4 108 8.4 75 40 M12 37 12
CMS 7550* 122 4.7 265 4.5 57 10.9 102 10.6 75 50 M12 37 12
CMS 7555* 122 5.5 255 5.0 52 12.2 102 12.1 75 55 M12 37 12
CMS 10040 347 3.5 663 3.2 108 8.0 196 7.9 100 40 M16 45 16
CMS 10055 255 5.2 510 4.7 102 11.7 192 11.7 100 55 M16 45 16
CMS 16070* 652 6.6 1280 6.1 260 14.8 490 14.8 160 70 M20 50 20
* Available only on Request
AVAILABLE
RUBBER NATURAL (N) NEOPRENE (C) NITRILE (B)
GRADE
SUITABLE GENERAL WEATHER OIL
FOR PURPOSE RESISTANCE RESISTANCE

Isolators are available with External (E) and / or Internal (I) threads.

Deflection of ISOLATOR in combination of Compression and Shear at

45 deg. is 1.6 times the deflection under compression only for the same
load. Special sizes can be custom made to meet almost any required
stiffness characteristics.

INSTALLATION:
* It is advisable to select Mountings of same size even of different type for obtaining uniform deflection of mounted equipment. Twisting of metal
part must be avoided during installation for long life.
* Isolator deflection must not be exceeded for continuous operations.

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Coniflex Rubber Mounting
Type CFX

RESISTOFLEX CIRCULAR ISOLATORS

LOAD / MOUNT : UPTO 525 KGS

DEFLECTION : UPTO 6.5 MM

The configuration of high grade annular

elastomer sandwiched and chemically
bonded between outer tapered flanged part
and tapered inner core is such that it acts in
a combination of compression & shear to
give comparatively softer elasticity in the
axial direction.

In the radial direction, elastomer is under

direct compression. The radial stiffness is
many times more than axial stiffness at the
working range which also increases at
higher lateral loads. This characterstics
allows the Coniflex lsolator to accept large
transitory shocks which make them
particularly useful as elastic support for a
very wide variety of machinery which are
susceptible to large radial oscillation forces.

Coniflex Isolator can be furnished with

additional Stop Plates for preventing any
failure due to excessive over load. The Top
Plate will progressively absorb large vertical
movement (acceleraration : downward
compression) by resting on the upper
rubber shoulder. If deceleration (upward -
rebound) is very high, inner cone will be
deflected only until the bottom stop plate
comes up against lower collar on the outer
cone.

For very low frequency Vibration Isolation,

the isolator can be placed in tandem (one
over the other) thus giving double deflection
at the rated load.

TYPICAL APPLICATIONS

lEngines
lCompressors
lGenerators
lTanks
lFixed to road vehicles
lRailway Coaches
lShips
lOperator cabin in Hydraulic Excavators.
RMM 418 CFX AUG 15

Vibration Shock Seismic Control

 TECHNICAL CHARACTERISTICS

CODE NO. RATED AXIAL DEFLECTION AT

LOAD RATED LOAD
±15%
Kgs. mm
CFX-070E 520 4

TECHNICAL CHARACTERISTICS

CODE NO. RATED AXIAL DEFLECTION AT

LOAD RATED LOAD
±15%
Kgs. mm
CFX-084R/45
210 6.5
CFX-084E/45
CFX-084R/60
390 6.0
CFX-084E/60
CFX-084R/70
525 5.5
CFX-084E/70

TECHNICAL CHARACTERISTICS

CODE NO. RATED AXIAL DEFLECTION AT

LOAD RATED LOAD
±15%
Kgs. mm
CFX-100R/40 150 3
CFX-100R/50 220 3
CFX-100R/60 320 3
CFX-100R/70 420 3

All dimensions are approximate in (mm)

All figures are nominal for information only

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Stabiflex Vibration & Shock Isolator
Type STB

HIGH AXIAL FLEXIBILITY

UNIFORM RADIAL STIFFNESS

DESIGN

(1) Annular Rubber Ring

(2) Inner Metal Core with tapped hole to
take bolt form supporting
machinery.
(3) Outer Metal Ring with holes
provided for bolting wherever
required.
(4) Protruding Rubber Ring acting as a
non-skid pad for direct floor
mounting without fastening bolts.
(5) Painted steel cap for oil & corrosion
protection.
(6) Rubber Seal.

ADVANTAGES

« Eliminates up to 98% Vibrations.

« Accepts Large Transitory Shocks.
« 2-3 Times Stiffer Radially than Axially.
« Quick and Easy Installation.
« Flexible Plant Layout.
« Fixing by bolts and rebound stop facility
for Mobile Application.
« Oil & Corrosion Protection.

Ideally suited to support machinery

susceptible to Radial Forces: Machinery
fixed to Lorries Railway Wagons or Ships
etc.

TYPICAL APPLICATIONS

« Extensively used for supporting Engine

and Operator Cabin in Hydraulic
Excavators and other Earth Moving
Machinery

« Support Large Motor Compressor

Units, Generators, Tanks, Diesel
Engines, Reducers etc. on ground and
mobile equipment.

« Used under Metal Working Machinery,

Textile Machinery, Refrigeration & Air
Conditioning Equipment etc. etc.
RMM 428 STB JUN 16

Vibration Shock Seismic Control

 TECHNICAL CHARACTERISTICS
TYPE 50 60 70 PHYSICAL

HEIGHT THREADED CENTRES HOLE

CODE No. LOAD Defl. LOAD Defl. LOAD Defl. BASE
B (mm) DIA X No.
(kg) (mm) (kg) (mm) (kg) (mm) C (mm) D (mm)
J (mm) X Nos.
STB 0069 30 3 50 3 70 3 DIAMOND 41 M12 98 9X2
STB 0084 80 4 130 46 175 3 DIAMOND 51 M12 115 11X2
STB 0100 185 3 300 3 400 3 SQUARE 52 M12 90X90 11X4
STB 0133 450 5 725 5 1000 4 SQUARE 71 M16 114X114 13X4
COLOUR CODE GREEN BLUE RED

* Defl. is deflection at rated load with +/- 15% tolerance

* All figures are approximate and subject to change without notice
* Consult RESISTOFLEX for intermediate & higher load / deflection characteristics
* No Load factors necessary even for Mobile Applications

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Flexifloat Rubber Mounts licensed in 1992 by

Type EFM

Rated Load : - up to 1000 kgs

Deflection : - up to 6.5 mm

Flexifloat is a low height captive rubber

mounting especially designed where
space is limited.

The axial and transverse stiffness are

same but longitudinal stiffness is 2.5 time
of vertical stiffness. This facilitates
installation where higher stiffness in one
horizontal direction is desirable.

Isolator comprises of first grade bonded

rubber insert with plated outer metal
cover.

Integral overload and rebound

components limit excessive movement
under the action of vehicle/ship motion or
shock forces.

¬ Three sizes, each in three rubber

stiffnesses.

¬ Different vertical and lateral stiffness

ratios facilitate the choice of the most
appropriate isolator characteristics for
a particular application.

¬ Low height compact units for use

where space is limited.

TYPICAL APPLICATIONS

l CONTROL CABINETS
l COMPRESSORS
l FANS
l GENERATING SETS
l HYDRAULIC PUMPS
l MOTORS
l MARINE PROPULSION ENGINES
l MOBILE UNITS
RMM 432 EFM SEP 15

Vibration Shock Seismic Control

FLEXIFLOAT RUBBER MOUNTS EFM

TECHNICAL CHARACTERISTICS
PRODUCT COLOUR RATED DEFLECTION NOMINAL DIMENSIONS (mm)
CODE CODE LOAD at Rated Load
(kg) (mm) ±15% A B C E F H J K L

EFM 1.45 Blue 45 4.5

EFM 1.55 Red 80 4.5 43 123 100 M12 60 11 14 11 14
EFM 1.65 Purple 120 4.5
EFM 2.45 Blue 130 6.5
EFM 2.55 Red 220 6.5 51 185 140 M16 70 13 20 13 30
EFM 2.65 Purple 370 6.5
EFM 3.45 Blue 350 8
EFM 3.55 Red 550 8 78 230 182 M20 90 18 26 18 34
EFM 3.65 Purple 1000 8

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Mobiflex Mounting
licensed in 1992 by

Type MOB 144

'MOBIFLEX' Mounting style MOB 144 has

been especially designed for effective
Vibration Isolation from 75% to 85% of rotating
machines running at 1500 rpm and also Shock
protection up to 5g - ideal for mobile or marine /
naval use.

First grade rubber is loaded in a combination

of compression & shear to provide low vertical
stiffness with desirable horizontal stability.

Dynamic stiffness characteristics is kept

within close tolerance for predictable Vibration
Isolation performance.

SPECIAL FEATURES

Diamond shaped base has one circular &

another eliptical hole for ease of alignment &
installation.

Top has M16 tapped hole for bolting to the

mounted equipment.

Both top & bottom parts are formed from extra

thick steel material.

Strong metal components with interlocking

fail-safe device supplemented with resilient
stop make Mounting damage proof against
high Shocks.

Dome shaped cover gives protection against

dripping of oil.

All metal parts are fully protected against

corrosion on land or marine use.

—TYPICAL APPLICATIONS
—Compressors
—Diesel Generators
—Engines
—Fans
—Marine Gen. Sets
—Pumps etc.
RMM 422 MOB MAR 16

Vibration Shock Seismic Control

 TECHNICAL CHARACTERISTICS
PARTICULARS Load Range Static Deflection Dynamic Natural
± 15% Frequency Nominal

UNITS Kgs mm Hz.

MOB-144-40 N 300 - 700 4.2 - 10 13.2 - 8.5
MOB-144-60 N 500 -1300 3.0 - 8.0 15 - 9.5
MOB-144-70 N 562 -1500 3.0 - 8.0 15 - 9.5

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Fleximount Rubber Isolator
Type FM

NITRILE RUBBER

DESIGN

Assembly consists of cast metal base and

cover into which a pair of Rubber-to-metal
bonded flexible units are sandwiched in an
angular disposition. These are load in a
combination of shear and compression for
longest life and best load-deflection
characteristics. They can not become
solid and rendered ineffective.

THREE DEGREES OF FLEXIBILITY

Mountings are stiffer in the transverse

direction as compared to flexibility in the
horizontal direction. Mountings can be
oriented to obtain greater flexibility in the
required direction. When three or more
mountings are arranged symmetrically
around a vertical axis, the flexibility of the
suspension is the same in all direction.
TYPICAL APPLICATIONS ▪ No Grouting
▪ Instant Installation
▪ 60% Saving on foundation costs
▪ Upto 95% Vibration isolation
▪ 20% Noise reduction
▪ Fewer repairs and longer life of
mounted equipment
▪ Accurate work and improvement
in output efficiency
▪ Flexible Production lines

TYPICAL APPLICATIONS

­ CENTRIFUGALS
­ COMPRESSORS
­ CHAMBERS
­ DIESEL ENGINES
­ FANS
­ FURNACES
­ GENERATING SET
­ GRINDERS
2000 KVA DG Set weighing 13,000 kgs mounted on 14 nos Fleximounts ­ PUMPS
without foundation at Escorts Heart Centre ­ POLISHING MACHINES
RMM 420 LFM FEB 16

­ PRINTING MACHINE
­ TEXTILE MACHINES
­ VIBRATING SCREENS
­ WASHING MACHINES

Vibration Shock Seismic Control

FLEXIMOUNT RUBBER ISOLATOR FM

FM 50 / 75

FM 500

TECHNICAL CHARACTERISTICS
PART NO. COLOUR RATED DEFLECTION NOMINAL DIMENSIONS (mm)
CODE LOAD AT RATED
LOAD
±15% A
A E
B F
C G
D H
E J
F
(kg) (mm)
FM-50A/40 BROWN 120 5.8
FM-50A/50 PINK 160 6.2
75 85 128 89 M12 11
FM-50A/60 WHITE 240 5.8
FM-50A/70 ORANGE 320 5.3
FM-75X/40 BROWN 270 5.5
FM-75X/50 PINK 380 5.5
110 148 205 125 M16 17
FM-75X/60 WHITE 480 5.5
FM-75X/70 ORANGE 690 5.0
FM-500S/40 BROWN 800 10.2
FM-500S/50 PINK 1200 10.2 Please refer to sketch above
FM-500S/60 WHITE 1600 10.3

ACCESSORIES
Rubber Friction Pad made of oil resistant Nitrile Rubber obviate the necessity of bolting machine to floor.
The pads locate the machine securely and overcome any tendency to "walk". No adhesives are required.
Levelling Device can be provided for machines requiring precision levelling.

MOUNTING SELECTION GUIDE

Disturbing Frequency 600 720 950 1250 1440 2000 2850
Isolation Efficiency (%) 70 70 70 75 80 85 90
Static Deflection (mm) 10.0 07.6 04.0 03.0 02.6 01.8 01.2
INSTALLATION MANUAL
Refer to IM 010 for detailed
Installation Instructions

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Genflex Rubber Mounting
licensed in 1992 by

Type GF

Genflex mountings employ the well proven

inclined rubber element design to achieve
much higher deflections compared to simple
rubber in compression devices and
therefore providing superior isolation of low
frequency vibration.

The pure rubber design offers excellent

performance in the audible frequency range
which cannot be achieved with helical steel
springs even with so called ‘noise stop pads’.

Natural rubber also offers inherent damping

to control transient motion resulting from
machine start up, run down and fault
conditions.

For marine and mobile applications, a

combined overload and rebound buffer is
available in both the B range and HD (high
deflection) variants.

DESIGN FEATURES
n First grade natural rubber to metal bonded
rectangular elements inclined to achieve
maximum load and deflection using a
combination of compression and shear loading.
n Rubber elements effectively protected against
oil contamination by the extended top skirt
design of the top casting.
n Two different horizontal stiffness axes enable
optimum system characteristics and vibration
isolation to be achieved using careful
orientation of the mountings.
n Marine/Mobile version available with combined
overload and rebound buffer.
n A ribbed rubber seating pad is available
obviating the need for costly HD bolts for many
TYPICALAPPLICATIONS industrial applications.
n Chillers and Cooling Towers n Available with Iron Castings as standard and
Steel Castings for ShockApplications.
n Diesel Generating Sets
n Engine Test Beds
RMM 310 LGF OCT 15

n Lift Motor Gear

n Large Fans andAHU’s
n Marine Propulsion Engines
n Pumps and Compressors
n Vibrating Screens and Hoppers
Vibration Shock Seismic Control
 STATIONARY APPLICATIONS
CODE COLOUR LOAD STATIC STIFFNESS DYNAMIC / STATIC FREE
CODE RANGE (KN/m) STIFFNESS RATIO HEIGHT
(kg)
Kx Ky Kz A (mm)

GF-B/45 BLUE UP TO 560 2450 275 918 1.18

GF-B/55 RED UP TO 900 3630 360 1400 1.25
111
GF-B/60 WHITE UP TO 1100 4660 460 1850 1.35
GF-B/70 ORANGE UP TO 1650 6370 600 2550 1.70
GF-HD/35 YELLOW UP TO 425 610 125 330 1.14
GF-HD/45 BLUE UP TO 630 890 205 450 1.18
GF-HD/55 RED UP TO 990 1280 268 680 1.25
124
GF-HD/60 WHITE UP TO 1280 1820 400 860 1.35
GF-HD/70 ORANGE UP TO 1650 2360 480 1300 1.70
GF-HD/75 GREY UP TO 2000 3420 750 1800 1.90

Stiffness

l Static stiffness values should be used to calculate

working deflection and therefore operating height. For
system natural frequency calculations, dynamic stiffness
values must be used

l Static stiffness tolerance is ±15%.

MOBILE APPLICATIONS
CODE COLOUR LOAD STATIC STIFFNESS DYNAMIC / STATIC FREE
CODE RANGE (KN/m) STIFFNESS RATIO HEIGHT
(kg)
Kx Ky Kz A (mm)

GF-B/45.M BLUE 200-560 2450 275 918 1.18

GF-B/55.M RED 300-900 3630 360 1400 1.25
108
GF-B/60.M WHITE 375-1100 4660 460 1850 1.35
GF-B/70.M ORANGE 550-1650 6370 600 2550 1.70
GF-HD/35.M YELLOW 250-425 610 125 330 1.14
GF-HD/45.M BLUE 350-630 890 205 450 1.18
GF-HD/55.M RED 550-990 1280 268 680 1.25
117
GF-HD/60.M WHITE 725-1280 1820 400 860 1.35
GF-HD/70.M ORANGE 925-1650 2360 480 1300 1.70
GF-HD/75.M GREY 1150-2000 3420 750 1800 1.90

IMPORTANT NOTES:-
l For MOBILE Versions the upper fixing bolt (not supplied) MUST locate to at least 50 mm
and not more than 85 mm thread depth.
l 35 & 75 versions are non stock items and therefore to special order only.
l Mounts available in Oil & environment resistant NITRILE RUBBER. When ordering use
suffix 'B' after part no.

Friction Seating Pads

For free standing applications and installation on uneven surfaces. Please specify Part No.
FP-GF when ordering. Seating Pad 6 mm thick.
Installation Instructions
Refer to our Instruction Manual IM 010

For more detailed information and technical assistance, please contact our Applications Engineering Group.
In the interest of continual development and improvement, the company reserves the right to make modifications to these details without notice.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Fleximount / Genflex Vibration Shock Seismic Control

RUBBER ISOLATORS

TYPICAL MODE OF INSTALLATION

RPL ADS ACR 610 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Studded Vibration Isolating Pads
Type SFP 30

Pad Style SFP has circular studs on both

sides. Studs on one side are
offset from studs on the other
side and the spacing of studs
is such that any one stud on
one face is centrally located in
relation to four studs on the other face.
This special design functions like a “flexible
beam” partly in bending and partly in shear
resulting in higher deflection and excellent
Single layer characteristics even for lighter loads.

Pads have static deflection of upto 3mm &

give satisfactory insulation against
frequencies above 1200 CPM (20 Hertz).
For lower frequencies, higher deflection
can be obtained easily by using Pads in
multiple layers, interposed with steel
sheets.

Pads are free from corrosion &

deterioration.

DESIGN FEATURES
3 layer stack Load : UPTO 710 KGS per
Carpet
Deflection : UPTO 3mm
Unit Loading : 0.13 Kgs to 0.47 Kgs per
Sq. cm
Standard Size : 390mm x 390mm
Thickness : 30mm

TYPICAL APPLICATIONS
Active Isolation : Pads can be used for
reducing transmission of Vibration, Noise &
Shock from a wide range of heavy plant &
machinery including:
* BLOWERS * FANS
* COMPRESSOR * POWER
* DROP STAMPS * PRESSES
* D. G . SETS * PUMPS
* ENGINE TEST BEDS * HAMMERS
* STEAM & GAS TURBINES

Passive Isolation : Pads reduce ground

borne Vibration & Noise to a very high
degree from Forging Hammers, Heavy
Machinery & Passing traffic providing
protection from external disturbances to:
* ANECHOIC CHAMBERS * BUILDINGS &
STRUCTURES * JIG BORERS * LATHES &
OTHER MACHINE TOOLS
RMM 428 SFP JUN 16

* LABORATORIES * PRECISION
MACHINES * ROLL GRINDERS
* SENSITIVE APPARATUS * STUDIOS ETC.

Vibration Shock Seismic Control

 TECHNICAL CHARACTERISTICS
CODE NO. UNIT MAX LOAD MAX LOAD DEFLECTION
LOADING PER PAD PER sq.mt. ±15%

(kg/cm) (kgs) (kgs) (mm)

SFP-30 ES 0.13 200 1300 3

SFP-30 ME 0.24 360 2400 3
SFP-30 HA 0.35 530 3500 3
SFP-30 EH 0.47 710 4700 3

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Square Cell Pads
Type SC

Scientifically designed resilient pads are moulded

with high grade blend of Natural and Synthetic Rubber
for general applications. on both sides

Standard Size : 450 x 450 mm

Thickness : 8 mm & 12 mm
Unit Loading : 1.8 to 21 Kg/cm

Also AVAILABLE

Grade 100 N : 100% Natural Rubber for Indoor Applications.

Grade 100 CR : 100% Neoprene Rubber for Environment
Resistance.
Grade 100 N : 100% Nitrile Rubbers for Oil Resistance.
RMM 440 LSC MAR 16

Vibration Shock Seismic Control

 LOAD DEFLECTION CHARACTERISTICS

TECHNICAL CHARACTERISTICS SIZES IN mm x mm

58X58 75X75 112X112 150X150 225X225 450X450
CODE NO. THICKNESS MAXIMUM
NOMINAL UNIT MAXIMUM NUMBER OF LAYERS
LOADING 3 4 6 8 12 14
(mm) (kg/cm²) RATED LOAD-Kgs
SC 8/40 8 1.8 60 101 225 404 911 3645
SC 8/50 8 3.5 118 197 439 787 1772 7088
SC 8/70 8 7 236 394 878 1574 2544 14175
SC 12/50 12 14 472 787 1756 3148 7088 28350
SC 12/70 12 21 706 1181 2634 4722 10632 42525
2
Unit conversion 1 MPa ~ 10 Kg/cm

Selection of 'Resistoflex 'Pads depends upon the Load-deflection curves apply only to 'Resistoflex'
operating characteristic, load distribution etc. Pads for conditions of sustained vibrations.

Pads work most efficiently when loaded to the Pads are designed for and functions very
maximum loading capacity. efficiently in a wide variety of installations where
rate of impact is considerable low.
Pads can be used very advantageously in multiple
layers for additional cushioning, specially for For impact machinery or where increased
isolation of low disturbing frequencies (in general stiffness is desirable next higher capacity Pad or
below 800 rpm or for installations on upper floors) increase the Pad bearing area.
and some specialized application where
absorbing Shock and reducing Noise is desirable. Impact Shock conditions should be considered
individually. Consult 'RESISTOFLEX'.

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Compression Stud Pad
Type CSP 15
RMM 400 CSP FEB 13

Vibration Shock Seismic Control

 TECHNICAL CHARACTERISTICS
CODE NO. UNIT RATED LOAD DEFLECTION
LOADING PER PAD ±15%

(kgs/cm²) (kgs) (mm)

S-50 0.64 970 2

H-70 2.2 3350 2

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 
 










  



 
 

 
  


  


 






 

  


 

 
   

   
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 FLEXIBLE
PIPE CONNECTORS

56 Nos.1200 mm RE Joint installed

at Bhabha Research Centre in 1980
REJ 400 GML FEB12
Rubber Joints with Fixed Flanges
Style TISA Single Arch

DESIGN

Tubular Rubber Joints are SPOOL

TUBULAR

TYPE Expansion Joints constructed

with high strength nylon cord fabric
and elastomer reinforced with metal
rings / wires. The full faced flanges
are integral with the body and utilize
split steel retaining rings drilled to
required standards. The sealing
surface of the rubber flanges
provide a fluid and gas tight sealing
making gaskets redundant

ADVANTAGES

n Low deformation under pressure

n Greater recovery from movement
n Higher safety factor
n Resistant to fatigue
n Negligible loss of head
n Abrasion, Water, Heat, Chemical,
Weather resistant
n Prevents electrolytic corrosion
n Economical - No Gaskets - ease of
installation
n Compact -requires very little space

APPLICATIONS

For use in Plumbing, HVAC & Air systems

in:

n Residential Houses
n Commercial Buildings
n Industrial Plants
n Sewage Treatment Plants
n Chemical Plants
n Power Plants
n Marine Systems

For BIG RELIEF from

STRESSES AT
PIPE FLANGES
56 Nos.1200 mm RE Joint installed Innumerable Installations
at Bhabha Research Centre in 1980 since 1965

Rubber Expansion Joints

Single Arch Tubular REJoints with Fixed Flanges TISA

CAUTION :
After installation
Control Units
require setting
at site for
E/2 and C/2

REJ for anchored / guided pipelines REJ with Control Units for all other lines

CONSTRUCTION DESIGN CONDITIONS

S.No. COMPONENT MATERIAL TYPE PN 2.5 PN 10 PN 16* PN 25*
1 Cover Synthetic Rubber Maxm. Working Kgf/cm² 2.5 10 16 25
Pressure
2 Tube Natural Rubber Design / Test Kgf/cm² 3.8 15 24 38
Pressure
3 Carcass Nylon Cord & Steel Wire
Vacuum mm Hg 250 400 650 750
4 Retaining Rings Mild Steel
5 Control Unit Mild Steel Standard IS 6392 BS 10 D BS 10 E IS 6392
Flange
Water, Sea Water, Acid, Drillings
Standard Alkali, Compressed Air etc. Optional ASME B16.5/BS 4504/ISO 7005/EN 1092
Conveying
Medium Optional Oils, Hydraulic Oil, Hot Water Temperature °C -10° to +70°C (Optional -20° to +110°C)

* Control Units Recommended 1 bar = 0.1 Mpa = 1 Kg/cm² = 14.5 psi

TECHNICAL CHARACTERISTICS
DIMENSIONS MAXIMUM ALLOWABLE MOVEMENTS ( Not Simultaneous )

CODE NOMINAL NEUTRAL AXIAL AXIAL TRANSVERSE TORSIONAL ANGULAR

BORE LENGTH COMPRESSION ELONGATION DEFLECTION ANGLE ANGLE
NB (mm) NL (mm) - C (mm) + E (mm) + T (mm) ± (Deg.) (Deg.)
REJ-TISA-0020 20 125/150 11 6 12 3 14.5
REJ-TISA-0025 25 125/150 11 6 12 3 14.5
REJ-TISA-0032 32 150 11 6 12 3 14.5
REJ-TISA-0040 40 150 11 6 12 3 14.5
REJ-TISA-0050 50 150 11 6 12 3 14.5
REJ-TISA-0065 65 150 11 6 12 3 10
REJ-TISA-0080 80 150 11 6 12 3 10
REJ-TISA-0100 100 150 11 6 12 3 7.5
REJ-TISA-0125 125 150 11 6 12 3 5
REJ-TISA-0150 150 150 11 6 12 3 5
REJ-TISA-0200 200 150 17 9 12 3 5
REJ-TISA-0250 250 200 17 9 12 3 4
REJ-TISA-0300 300 200 17 9 12 3 3
REJ-TISA-0350 350 200 17 9 12 2 2.5
REJ 430 TISA NOV13

REJ-TISA-0400 400 200 17 9 12 2 2.5

REJ-TISA-0450 450 200 17 9 12 1 2.5
REJ-TISA-0500 500 200 20 11 12 1 2.5
REJ-TISA-0550 550 250 20 11 12 1 2
REJ-TISA-0600 600 250 20 11 12 1 2
Consult Resistoflex for special sizes, end connections, handling medium, operating Conditions

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Rubber Joints with Floating Flanges
Style SRSA Single Sphere

DESIGN
SPHERICAL
Moulded Rubber Joint with a single
SPHERICAL SHAPED arch is self cleaning
and allows pressure to exert uniformly in all
directions thus reducing the force exerted on
equipments & pipe lines.

The construction combines elastic properties

of rubber with nylon cord fabric reinforcement
and is integrated with steel Floating Flanges
to provide a flexible pipe joint. The Sealing
surfaces provide a fluid and gas tight seal.

IDEAL as a PUMP CONNECTOR

Most widely used world over to protect

pumps. It provides the greatest pressure,
temperature and movement. Its resiliency
helps control pulsation shocks and noise
transmission.

ADVANTAGES

n WIDE FLOWING ARCH.

Virtually eliminates sediment build up
n FLOATING FLANGE
eases Installation
n COMPENSATES FOR
AXIAL, LATERAL, TORSIONAL AND
ANGULAR MOVEMENTS
Due to thermal changes & misalignment
n ISOLATES VIBRATIONS, DAMPENS
NOISE AND PRESSURE SURGES
n SUITABLE FOR SUCTION AND
DISCHARGE

APPLICATIONS

For use in Plumbing, HVAC & Air systems in:

n RESIDENTIAL HOUSES
n COMMERCIAL BUILDINGS
n INDUSTRIAL PLANTS
n SEWAGE TREATMENT PLANTS
n CHEMICAL PLANTS
n POWER PLANTS
n MARINE SYSTEMS

For BIG RELIEF from

STRESSES AT
PIPE FLANGES
END SUCTION PUMP

Rubber Expansion Joints

Single Sphere Rubber Joints with Floating Flanges SRSA

CAUTION :
After installation
Control Units
require setting
at site for
E/2 and C/2

REJ for anchored / guided pipelines REJ with Control Units for all other lines

CONSTRUCTION DESIGN CONDITIONS

S.No. COMPONENT MATERIAL TYPE PN 2.5 PN 10 PN 16* PN 25*
1 Outer Cover EPDM / Synthetic Rubber Maxm. Working Kgf/cm² 2.5 10 16 25
Pressure
2 Inner Lining EPDM / Synthetic Rubber Design / Test Kgf/cm² 3.8 15 24 38
Pressure
3 Carcass Nylon Cord Fabric
Vacuum mm Hg 250 400 650 750
4 Floating Flanges Mild Steel
5 Control Unit Mild Steel Standard IS 6392 BS 10 D BS 10 E IS 6392
Flange
Water, Sea Water, Acid, Drillings
Standard Alkali, Compressed Air etc. Optional ASME B16.5/BS 4504/ISO 7005/EN 1092
Conveying
Medium Optional Oils, Hydraulic Oil, Hot Water Temperature °C -10° to +70°C (Optional -20° to +110°C)

* Control Units Recommended 1 bar = 0.1 Mpa = 1 Kg/cm² = 14.5 psi

TECHNICAL CHARACTERISTICS
DIMENSIONS MAXIMUM ALLOWABLE MOVEMENTS ( Not Simultaneous )

CODE NOMINAL NEUTRAL AXIAL AXIAL TRANSVERSE ANGULAR

BORE LENGTH ELONGATION COMPRESSION DEFLECTION MOVEMENT
NB (mm) NL (mm) + E (mm) - C (mm) ± T (mm) α°(Deg.)
REJ-SRSA-0020 20 150 5 8 8 15
REJ-SRSA-0025 25 150 5 8 8 15
REJ-SRSA-0032 32 150 6 9 9 15
REJ-SRSA-0040 40 150 6 10 9 15
REJ-SRSA-0050 50 150 7 10 10 15
REJ-SRSA-0065 65 150 7 13 11 15
REJ-SRSA-0080 80 150 8 15 12 15
REJ-SRSA-0100 100 150 10 19 13 15
REJ-SRSA-0125 125 150 12 19 13 15
REJ-SRSA-0150 150 150 12 20 14 15
REJ-SRSA-0200 200 150 16 25 22 15
REJ-SRSA-0250 250 200 16 25 22 15
REJ-SRSA-0300 300 200 16 25 22 15
REJ 426 SRSA NOV 16

REJ-SRSA-0350 350 200 16 25 22 15

REJ-SRSA-0400 400 200 16 25 22 15
REJ-SRSA-0450 450 200 16 25 22 15
REJ-SRSA-0500 500 200 16 25 22 15
REJ-SRSA-0600 600 250 16 25 22 15
Suffix CU for REJ with Control Units Consult Resistoflex for special sizes, end connections, conveying medium, operating Conditions

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Rubber Joints with Floating Flanges
Style SRDA Double Sphere

DESIGN
SPHERICAL
Double Sphere Joints are used exactly as
their single sphere counterparts. However, its
unique shape and longer length allows
greater compression, elongation, lateral and
angular movement. This minimizes water
hammer, increases noise suppression and
dampens hydraulic surge and shock in any
system.

The construction combines elastic properties

of rubber with nylon cord fabric reinforcement
and is integrated with steel Floating Flanges
to provide a flexible pipe joint. The Sealing
surfaces provide a fluid and gas tight seal.

IDEAL as a PUMP CONNECTOR

Most widely used world over to protect

pumps. It provides the greatest pressure,
temperature and movement. Its resiliency
helps control pulsation shocks and noise
transmission.

ADVANTAGES

n WIDE FLOWING ARCH - Virtually

eliminates sediment build up
n FLOATING FLANGE - eases Installation
n COMPENSATES FOR AXIAL,
LATERAL, TORSIONAL AND
ANGULAR MOVEMENTS - Due to
thermal changes & misalignment
n ISOLATES VIBRATIONS, DAMPENS
NOISE AND PRESSURE SURGES
n SUITABLE FOR SUCTION AND
DISCHARGE

APPLICATIONS

For use in Plumbing, HVAC & Air systems in:

n RESIDENTIAL HOUSES
n COMMERCIAL BUILDINGS
n INDUSTRIAL PLANTS
n SEWAGE TREATMENT PLANTS
n CHEMICAL PLANTS
n POWER PLANTS
n MARINE SYSTEMS

For BIG RELIEF from

STRESSES AT
DOUBLE SUCTION PUMP PIPE FLANGES

Rubber Expansion Joints

Double Sphere Rubber Joints with Floating Flanges SRDA

CAUTION :
After installation
Control Units
require setting
at site for
E/2 and C/2

REJ for anchored / guided pipelines REJ with Control Units for all other lines

CONSTRUCTION DESIGN CONDITIONS

S.No. COMPONENT MATERIAL TYPE PN 2.5 PN 10 PN 16* PN 25*
1 Outer Cover EPDM / Synthetic Rubber Maxm. Working Kgf/cm² 2.5 10 16 25
Pressure
2 Inner Lining EPDM / Synthetic Rubber Design / Kgf/cm² 3.8 15 24 38
Test Pressure
3 Carcass Nylon Cord Fabric
Vacuum mm Hg 250 400 650 750
4 Floating Flanges Mild Steel
5 Control Unit Mild Steel Standard IS 6392 BS 10 D BS 10 E IS 6392
Flange
Water, Sea Water, Acid, Drillings
Standard Alkali, Compressed Air etc. Optional ASME B16.5/BS 4504/ISO 7005/EN 1092
Conveying
Medium Optional Oils, Hydraulic Oil, Hot Water Temperature °C -10° to +70°C (Optional -20° to +110°C)

* Control Units Recommended 1 bar = 0.1 Mpa = 1 Kg/cm² = 14.5 psi

TECHNICAL CHARACTERISTICS
DIMENSIONS MAXIMUM ALLOWABLE MOVEMENTS ( Not Simultaneous )

CODE NOMINAL NEUTRAL AXIAL AXIAL TRANSVERSE ANGULAR

BORE LENGTH ELONGATION COMPRESSION DEFLECTION MOVEMENT
NB (mm) NL (mm) + E (mm) - C (mm) T (mm) α°(Deg.)
REJ-SRDA-0032 32 150 10 20 20 30
REJ-SRDA-0040 40 150 10 20 20 30
REJ-SRDA-0050 50 150 10 20 20 30
REJ-SRDA-0065 65 150 10 20 20 30
REJ-SRDA-0080 80 150 10 20 20 30
REJ-SRDA-0100 100 200 15 30 25 30
REJ-SRDA-0125 125 200 15 30 25 30
REJ-SRDA-0150 150 200 15 30 25 30
REJ-SRDA-0200 200 200 20 40 30 30
REJ-SRDA-0250 250 200 20 40 30 30
REJ-SRDA-0300 300 200 20 40 30 30
REJ-SRDA-0350 350 225 20 40 30 30
REJ-SRDA-0400 400 225 20 40 30 30
REJ 428 SRDA NOV 16

REJ-SRDA-0450 450 260 25 45 30 30

REJ-SRDA-0500 500 260 25 45 30 30
REJ-SRDA-0600 600 260 25 45 30 30
Suffix CU for REJ with Control Units Consult Resistoflex for special sizes, end connections, conveying medium, operating Conditions

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Flexible Rubber Connector Style
with Standard Union Ends SUDA

DESIGN

Small bore piping system present

alignment, thermal expansion and noise &
vibration transmission problems resulting
in prestressed pipe lines susceptible to
pre-mature failures. Highly flexible joints
with union ends alleviates these stresses.

ADVANTAGES

0 Absorb pipe movements

0 Isolate Vibration
0 Reduce Noise
0 Protect against start-up Surge forces

TYPICAL APPLICATIONS:

Building / HVAC / Plumbing equipments,

piping systems for industrial plants &
private residences.

USED IN

0 Air Conditioning Systems

0 Chemical lines
0 Circulating water lines
0 Compressor lines
0 Pipelines
0 Paper stock lines
0 Pump-suction and discharge
0 Refrigeration lines
0 Swimming pools
0 Solar technologies
0 Water & waste treatment plants

MARINE INSTALLATIONS

0 Air intake on Diesel engines

0 Ballast
0 Between scoop and condenser
0 Circulating lines to condenser
0 Fog foam lines
0 Fire and bilge pump lines
0 Forced draft
0 Overboard discharge
0 Sanitary system
0 Ventilation lines

Rubber Expansion Joints

Flexible Rubber Connector with Standard Union Ends SUDA

SUDA

CONSTRUCTION DESIGN CONDITIONS

S.No. COMPONENT MATERIAL TYPE PN 16
EPDM, CR, NBR, NR Maxm. Working 16 Kgf/cm² at 20oC
1 Outer/ Inner Rubber Pressure

2 Reinforcement Synthetic Cord Fabric Test Pressure 24 Kgf/cm² at 20oC

3 Girdle Ring Steel Wire Vacuum 400 mm Hg

Deflection o
4 Unions Malleable Cast Iron Angle
45

Applicable Water, Sea Water, Hot Water, Air, Temperature -10° to +70°C (Optional -20° to +110°C)
Media Compressed Air, Oil, Acid, Alkali, etc.
1 bar = 0.1 Mpa = 1 Kg/cm² = 14.5 psi

TECHNICAL CHARACTERISTICS
MAIN CONNECTING DIMENSION MAXIMUM ALLOWABLE MOVEMENTS (not Simultaneous)
CODE NOMINAL BORE NEUTRAL AXIAL AXIAL LATERAL ANGULAR
LENGTH EXTENSION COMPRESSION DEFLECTION MOVEMENT
DN(mm) DN(inch) L(mm) E (mm) C (mm) D (mm) (Deg.)
REJ-SUDA-0015 15 ½ 200 6 22 22 45
REJ-SUDA-0020 20 ¾ 200 6 22 22 45
REJ-SUDA-0025 25 1 200 6 22 22 45
1
REJ-SUDA-0032 32 1 /4 200 6 22 22 45
REJ-SUDA-0040 40 11/2 200 6 22 22 35
REJ-SUDA-0050 50 2 200 6 22 22 35
1
REJ-SUDA-0065 65 2 /2 265 6 22 22 30
REJ-SUDA-0080 80 3 285 6 22 22 30
REJ 430 SUDA NOV 16

Consult Resistoflex for special sizes, end connections, handling medium, operating Conditions

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Flexible Rubber Connector Style
with Flanged Union Ends SFDA

30º ANGULAR MOVEMENT

Small bore piping system present

alignment, thermal expansion and noise &
vibration transmission problems resulting
in prestressed pipe lines susceptible to
pre-mature failures. Highly flexible joints
with screwed ends alleviates these
stresses.

TYPICAL APPLICATIONS:

Building / HVAC / Plumbing equipments,

piping systems for industrial plants &
private residences.

USED IN

0 Air Conditioning Systems

0 Chemical lines
0 Circulating water lines
0 Compressor lines
0 Pipelines
0 Paper stock lines
0 Pump-suction and discharge
0 Refrigeration lines
0 Swimming pools
0 Solar technologies
0 Water & waste treatment plants

MARINE INSTALLATIONS

0 Air intake on Diesel engines

0 Ballast
0 Between scoop and condenser
0 Circulating lines to condenser
0 Fog foam lines
0 Fire and bilge pump lines
0 Forced draft
0 Overboard discharge
0 Sanitary system
0 Ventilation lines

ADVANTAGES

0 Absorb pipe movements

0 Isolate Vibration
0 Reduce Noise
0 Protect against start-up Surge forces

Rubber Expansion Joints

Double Sphere Connector with Flanged Union Ends SFDA

SFDA

CONSTRUCTION DESIGN CONDITIONS

S.No. COMPONENT MATERIAL TYPE PN 16
Maxm. Working 16 Kgf/cm² at 20oC
1 Outer/ Inner Rubber EPDM, CR, NBR, NR Pressure

2 Reinforcement Synthetic Cord Fabric Test Pressure 24 Kgf/cm² at 20oC

3 Girdle Ring Steel Wire Vacuum 400 mm Hg

Deflection
4 Unions D.I. Angle
45
o

Applicable Water, Sea Water, Hot Water, Air, Temperature -10° to +70°C (Optional -20° to +110°C)
Media Compressed Air, Oil, Acid, Alkali, etc.
1 bar = 0.1 Mpa = 1 Kg/cm² = 14.5 psi

TECHNICAL CHARACTERISTICS
MAIN CONNECTING DIMENSION MAXIMUM ALLOWABLE MOVEMENTS (not Simultaneous)
CODE NOMINAL BORE NEUTRAL AXIAL AXIAL LATERAL ANGULAR
LENGTH EXTENSION COMPRESSION DEFLECTION MOVEMENT
DN(mm) DN(inch) L(mm) E (mm) C (mm) D (mm) (Deg.)
REJ-SFDA-0015 15 ½ 200 6 22 22 45
REJ-SFDA-0020 20 ¾ 200 6 22 22 45
REJ-SFDA-0025 25 1 200 6 22 22 45
1
REJ-SFDA-0032 32 1 /4 200 6 22 22 45
REJ-SFDA-0040 40 11/2 200 6 22 22 35
REJ-SFDA-0050 50 2 200 6 22 22 35
1
REJ-SFDA-0065 65 2 /2 265 6 22 22 30
REJ-SFDA-0080 80 3 285 6 22 22 30
REJ 430 SFDA NOV 16

Consult Resistoflex for special sizes, end connections, handling medium, operating Conditions

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

How to Order RE Joints Rubber Expansion Joints

Please provide the following minimum Information :

1. Size of Line : Nominal Bore of Pipe (mm)
2. Flowing Media :
3. Maxm. Operating Pressure :
4. Vacuum :

5. Temperature : Operating :
Ambient :
6. (a) Movement Direction : Elongation / Compression / Lateral / Angular
(b) Movement Amount :
7. Need for Control Unit : Based on System Anchoring
8. Flange Drilling Standard : BS, ASME, IS, ISO, DIN, etc.

You can also select from our standard design conditions given below :

DESIGN CONDITIONS
TYPE PN 2.5 PN 10 PN 16* PN 25*
Maxm. Working Kgf/cm² 2.5 10 16 25
Pressure
Design / Test Pressure Kgf/cm² 3.8 15 24 38

Vacuum mm Hg 250 400 650 750

Standard IS 6392 BS 10 D BS 10 E IS 6392

Flange
Drillings
Optional ASME B16.5/BS 4504/ISO 7005/EN 1092

Temperature °C -10° to +70°C (Optional -20° to +110°C)

Water, Sea Water, Acid,

Standard Alkali, Compressed Air etc.
Applications
Optional Oils, Hydraulic Oil, Hot Water

Control Unit Optional Required for unanchored pipelines

* Control Units Recommended 1 bar = 1 Mpa = 1 Kg/cm² = 14.5 psi

Resistoflex has been supplying RE Joints for over 50 years. Our reputation for superior
products and technical support sets us apart from our competition.

In addition to RE Joints, Resistoflex is also a supplier of Metallic Expansion Joints, and

other speciality piping products, eg. Resilient Hangers, Pipe Supports, Vibration Isolators,
RPL ADS ACR 703 SEP 13

Seismic Braces, Flame Resistant Flexible Duct Connectors, etc.

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

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 Metal Expansion Joints with Fixed Flanges
Style RMEJ - WF

DESIGN

Metal expansion joints are elastic pipe

elements designed to provide
compensation for expansion movements
and vibrations in the pipe lines.

APPLICATIONS

These joints are mainly used in pipe lines

for the conveyance of a liquid, gas or
granular medium under lowest and highest
temperatures involving a wide range of
applications- Such as :

 EXHAUST PIPES OF ENGINES

AND TURBINES
 SHIP INDUSTRY
 CHEMICAL AND PETRO
CHEMICAL PLANTS
 POWER PLANTS
 CONSTRUCTION MACHINE
INDUSTRY
 AIR CRAFT AND NUCLEAR
INDUSTRY
 DISTRICT HEATING SYSTEM

ADVANTAGES

 COMPENSATES FOR AXIAL

MOVEMENTS DUE TO
THERMAL CHANGES
 COMPENSATES FOR
TORSIONAL AND ANGULAR
MOVEMENTS
 ISOLATES VIBRATIONS,
DAMPENS NOISE AND
PRESSURE SURGES.

EVERY JOINT IS TESTED

FOR PRESSURE & VACUUM
for durability, long life &
trouble free service
MEJ 600 MFF NOV 16

Metallic Expansion Joints

METAL EXPANSION JOINTwith Fixed Flanges RMEJ-WF

MEJ for anchored / guided

pipelines

CONSTRUCTION DESIGN CONDITIONS

S.No. Parts MATERIAL STANDARD OPTIONAL TYPE PN 10 PN 16 PN 25
1 Flange Carbon Steel IS 2062 SS 304 / 316 Maxm. Working Kgf/cm² 10 16 25
Pressure
2 Bellows Stainless Steel SS 304 SS 316
Test Pressure Kgf/cm² 15 24 38
Sleeve
3 (optional) Stainless Steel SS 304 SS 316
Standard BS 10 D BS 10 E IS 6392
Control Units Flange
4 Carbon Steel IS 2062 SS 304 / 316
(optional) Drillings
Optional ASME B16.5 / BS 4504 /
Lines of water, compressed oil, steam, ISO 7005 / ES 1092
Application oil, chemicals etc.
Water, Steam, Turbines, Fuel Oil, -30° C to +250° C
Medium Temperature
Gas, Air etc.
* Control Units Recommended 1 bar = 0.1 Mpa = 1 Kg/cm² = 14.5 psi

TECHNICAL CHARACTERISTICS
DIMENSIONS MAXIMUM ALLOWABLE MOVEMENTS ( Not Simultaneous )

CODE NOMINAL NEUTRAL AXIAL AXIAL LATERAL

BORE LENGTH ELONGATION COMPRESSION MOVEMENT
DN (mm) NL (mm) (mm) (mm) (mm)
RMEJ -WF 020 020 125 10 20 ±8
RMEJ -WF 025 025 125 10 20 ±8
RMEJ -WF 032 032 150 10 20 ±8
RMEJ -WF 040 040 150 10 20 ±8
RMEJ -WF 050 050 150 10 20 ±8
RMEJ -WF 065 065 150 10 20 ±8
RMEJ -WF 080 080 150 10 20 ±8
RMEJ -WF 100 100 150 10 20 ±8
RMEJ -WF 125 125 150 10 20 ±8
RMEJ -WF 150 150 150 10 20 ±8
RMEJ -WF 200 200 150 10 20 ±8
RMEJ -WF 250 250 200 10 20 ±8
RMEJ -WF 300 300 200 10 20 ±8
RMEJ -WF 350 350 200 10 20 ±8
RMEJ -WF 400 400 200 10 20 ±8
RMEJ -WF 450 450 200 10 20 ±8
RMEJ -WF 500 500 200 10 20 ±8
RMEJ -WF 600 600 250 10 20 ±8
Suffix CU for RMEJ with Control Units Consult Resistoflex for special sizes, end connections, conveying medium, operating Conditions

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Pump Bellow Connectors
Style RMEJ-FF

Series PN 10 PN 16* PN 25*

DESIGN

HYDROFORMED bellows for minimal

residual stresses and minimal thinning at
the convolution root and crown. They are
an excellent choice for any application
combining high temperature and pressure.

APPLICATIONS

These joints are mainly used in pipe lines

for the conveyance of a liquid, gas or
granular medium under lowest and highest
temperatures involving a wide range of
applications- Such as :

 EXHAUST PIPES OF ENGINES

AND TURBINES
 SHIP INDUSTRY
 CHEMICAL AND PETRO
CHEMICAL PLANTS
 POWER PLANTS
 CONSTRUCTION MACHINE
INDUSTRY
 HYGIENIC APPLICATION IN
FOOD INDUSTRY
 AIR CRAFT AND NUCLEAR
INDUSTRY
 DISTRICT HEATING SYSTEM

EVERY JOINT IS TESTED

FOR PRESSURE & VACUUM
for durability, long life &
trouble free service

Metallic Expansion Joints

METAL EXPANSION JOINTwith Floating Flanges RMEJ-FF

MEJ with Control Units for all other lines

CONSTRUCTION DESIGN CONDITIONS

S.No. Parts MATERIAL STANDARD OPTIONAL TYPE PN 10 PN 16* PN 25*
1 Flange Carbon Steel IS 2062 SS 304 / 316 Maxm. Working Kgf/cm² 10 16 25
Pressure at RT
2 Bellows Stainless Steel SS 304 SS 316 Test Pressure Kgf/cm² 15 24 38
at RT
Sleeve
3 (optional) Stainless Steel SS 304 SS 316
Standard BS 10 D BS 10 E IS 6392
Control Units Flange
4 Carbon Steel IS 2062 SS 304 / 316
(optional) Drillings
Optional ASME B16.5 / BS 4504 /
Lines of water, compressed oil, steam, ISO 7005 / ES 1092
Application oil, chemicals etc.
Water, Steam, Turbines, Fuel Oil, Temperature -30° C to +250° C
Medium Gas, Air etc.
* With Control Units Recommended 1 bar = 0.1 Mpa = 1 Kg/cm² = 14.5 psi

TECHNICAL CHARACTERISTICS
DIMENSIONS MAXIMUM ALLOWABLE MOVEMENTS ( Not Simultaneous )

CODE NOMINAL NEUTRAL AXIAL AXIAL TRANSVERSE

BORE LENGTH ELONGATION COMPRESSION MOVEMENT
DN (mm) NL (mm) E (mm) C (mm) T (mm)
RMEJ - FF 020 020 125 10 20 ±8
RMEJ - FF 025 025 125 10 20 ±8
RMEJ - FF 032 032 150 10 20 ±8
RMEJ - FF 040 040 150 10 20 ±8
RMEJ - FF 050 050 150 10 20 ±8
RMEJ - FF 065 065 150 10 20 ±8
RMEJ - FF 080 080 150 10 20 ±8
RMEJ - FF 100 100 150 10 20 ±8
RMEJ - FF 125 125 150 10 20 ±8
RMEJ - FF 150 150 150 10 20 ±8
RMEJ - FF 200 200 150 10 20 ±8
RMEJ - FF 250 250 200 10 20 ±8
RMEJ - FF 300 300 200 10 20 ±8
RMEJ - FF 350 350 200 10 20 ±8
MEJ 650 MFF NOV 16

RMEJ - FF 400 400 200 10 20 ±8

RMEJ - FF 450 450 200 10 20 ±8
RMEJ - FF 500 500 200 10 20 ±8
RMEJ - FF 600 600 250 10 20 ±8
Suffix CU for RMEJ with Control Units Consult Resistoflex for special sizes, end connections, conveying medium, operating Conditions

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 
    
 


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Typical Piping Layouts Rubber Expansion Joints

FOR HEATING, VENTILATING AND

AIR CONDITIONING

Stresses caused by changes in temperature in Heating They are used on the header connections to the
and Air Conditioning systems in addition to vibration and condenser and to the cooler, also in the water
noise characteristics of pumps or other pulsating circulating lines on both the hot and chilled water
equipment are effectively relieved by the installation of lines.
Flexcons Expansion Joints in the line.
Where extreme changes in temperatures occur,
control units must be installed.

TYPICAL PIPING LAY OUT

RPL ADS ACR 528 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Typical Piping Layouts Rubber Expansion Joints

Expansion Joints (without Control Unit) on suction &

discharge pipes with guides & anchors at bends. Pump
with inlet & outlet elbows anchored to solid base founda-
tion.

Expansion Joints (without Control Unit) on pipe lines with

guides. Tee & bends anchored to solid foundation.

Expansion Joints with and without Control Unit on suction

& discharge pipes with inlet & outlet elbows anchored to
solid base foundation.

Expansion Joints (without Control Unit) on suction &

discharge pipes with guides. Pump installed on Vibration
Isolators.

Expansion Joints (without Control Unit) on suction &

discharge pipes with guides. Pump and also inlet & outlet
elbows supported on Vibration Isolators.

Expansion Joints (without Control Unit) on suction and

discharge pipes with guides. Pump with inlet & outlet
elbows rigidly fixed to secondary base supported on
Vibration Isolators
RPL ADS ACR 527FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Typical Installations Rubber Expansion Joints

PIPING LAYOUT UTILIZING EXPANSION

JOINTS WHEN EQUIPMENT AND PIPING ARE
PROPERLY ANCHORED

PIPING LAYOUT UTILIZING EXPANSION

JOINTS AND THE PROPER USE OF
ANCHORS IN BRANCH LOCATIONS

PIPING LAYOUT SHOWING THE USE OF

CONTROL UNITS WITH THE EXPANSION
JOINTS WHEN PROPER SYSTEM
ANCHORING IS LIMITED
RPL ADS ACR 529 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Without Control Units Rubber Expansion Joints

RPL ADS ACR 530 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Installation & Maintenance Rubber Expansion Joints

IMPORTANT: DO NOT WELD IN THE VICINITY OF “RESISTOFLEX” RUBBER JOINT, FLUX

WILL BURN AND CAUSE POSSIBLE IR-REPARABLE DAMAGE TO THE JOINT.

1. All Pipelines are to be properly supported, so that 6. Proper size Bolts with Washers should be
the “Resistoflex” Expansion Joints do not carry inserted from the Steel Retaining Ring side
the Pipe Load. Pipe Weight should not be allowed wherever possible.
to act on the REJ. Main anchors must be provided
for at following locations: 7. Tighten Bolts in equal steps until Rubber
Flanges bulges slightly between Retaining
(a) At a change of Pipe direction. Ring and Mating Pipe Flange.
(b) At the termination of a run of Pipe.
(c) Where a Shut- off Valve or Reducing Valve 8. All Bolts must be checked for tightness
is installed between two Expansion Joints. approximately 10 days after installation.
(d) At a change in Pipe size.
(e) At a branching of the Pipe. 9. Any Gauges in the cover, caused by tools or
bolts during the installation should be sealed
2. If Pipeline is not anchored in above manner, even though they do not appear serious. This
Control Units should be used. Control Units can be done by coating with Rubber Cement,
should be used where Pipe Systems have thus preventing Oil or Water penetrating the
insufficient support and on systems where wide Fabric Carcass.
temperature functions occur.
10. Do not exceed limits of temperature pressure
3. All Pipes should be reasonably accurately line up. and movement.
“Resistoflex” Expansion Joints will readily adjust
itself to any subsequently misalignment within 11. REJ are to be installed properly without
limits. “Resistoflex” Expansion Joints are not exceeding the movement capabilities.
intended to compensate for careless installation Improper installation will reduce the normal
procedures. expected life.

4. Clean all Mating surfaces, removing all old 12. Once a year re-paint the Joints.
Gaskets, Materials, Metal burn or loose Rubber
Trim. 13. Store spare Joints in a dark dry cool place in a
flat or flange face position. Do not store with
5. Apply thin film of graphite dispersed in glycerin weight on flange edges.
or water to the face of the rubber flanges before
installation to prevent the rubber from adhering to
the metal flanges so that joint can be easily
removed without damage if dismantling is ever
necessary. No Grease, Oils or Soaps of any sort
should be used.
RPL ADS ACR 532 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Available Pressure Norms Rubber Expansion Joints

AND FLANGE DRILLING STANDARDS

Standard Classification MAWP

Unit Value
2
BRITISH : Table D psi/Kg/cm 100/6.8
2
Table E psi/Kg/cm 200/13.7
BS 10 - 2009 2
Table F psi/Kg/cm 300/20.6
2
PN 2.5 Kg/cm 2.5
2
PN 6 Kg/cm 6.0
2
BS 4504-3.1-1989 PN 10 Kg/cm 10.0
2
PN 16 Kg/cm 16.0
2
PN 25 Kg/cm 25.0
AMERICAN : Class 150 psi/Kg/cm2 150/10.3
2
ASME B 16.5-1996 Class 300 psi/Kg/cm 300/20.6
(Rev. of ANSI B 16.5-1988)
2
INDIAN : Class 0.25 Kg/cm 2.5
2
Class 0.6 Kg/cm 6.0
2
IS 6392 - 1971 Class 1.0 Kg/cm 10.0
( Same as BS 4504-3.1-1989) Kg/cm
2
16.0
Class 1.6
2
Class 2.5 Kg/cm 25.0
INTERNATIONAL : PN 10 Kg/cm2 10
2
PN 16 Kg/cm 16
IS07005-1:1992(E) 2
PN 20 Kg/cm 20

Psi : Pounds per square inch MAWP : Maximum available working pressure
RPL ADS ACR 533 FEB 13

1 Kg/cm = 14.5 Psi

2
PN : Nominal Pressure

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

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Conversion Data Expansion Joints Division

2
PRESSURE 1 kg/cm = 1 bar = 14.23 psi

-3
VACUUM 1 Torr = 1mm of Hg = 1.333 x 10 x 10 bars
765 Torr = 1 bar

TEMPERATURE C = 5 (F-32) / 9

LOAD 1 kg = 2.205 lbs

1T = 1000 kgs

3
VOLUME 1 M = 1000 litres
1M3 = 35.32 ft 3

2 2
AREA 1M = 10.76 ft

LINEAR 1M = 1000mm = 3.281 feets

1 foot = 304 .5 mm
1 inch = 2.54 cm

POWER 1 HP = 745.7 W = 0.745 KW

1 KW = 1.34 HP
REJ DS 320 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Flexible SS Sprinkler Connector
Style RFSC

FEATURES

(1) Superior anti-corrosion

(2) Easy of installation, Flexible-structured,

fewer joints and lightweight. Easy positioning
in installing pipes and easy to install even
within a narrow space

(3) High cost-effectiveness, requiring only

a short period of works. Considerably reduced
piping expenses by easily installation on site
without complicated preparation works.

(4) Various types of products. A wide range

of selections based on their purpose and
functions.
(5) Available both in dry and humid
environment.

(6) Obtained UL/ULc and FM certification.

REJ 450 RFSC FEB 13

Expansion Joints Division

FLEXIBLE SS SPRINKLER Connector RFSC

FLEXIBLE SPRINKLER HOSE WITH FITTINGS

FOR USE WITH COMMERCIAL SUSPENDED
CEILING

FLEXIBLE SPRINKLER DROPS (1–1) Union Type

(25A : SPB – BXX, SPN – AXX)

Resistoflex Union Type is Available in Braided Type

and Unbraided Type. Braided Type is certificated by
UL and FM, Unbraided Type is certificated by UL /
ULc.
Customers can choose the Plating Color
Between Yellow and Silver White Color.

FLEXIBLE SPRINKLER HOSE FITTINGS FOR USE

WITH CLEAN ROOM CEILING
TYPE SFT

RESISTOFLEX SFT is used for clean room piping

system of semi – conductor factories (PDP, TFT -
LCD and etc) such as Samsung and LG Electronics.
The product is certificated by FM Approvals.
Mould Reducer is welded on the hose. It should be
used in combination with sprinkler for use clean room
where mould - bar on the ceiling is connected.

FLEXIBLE SPRINKLER HOSE FITTINGS FOR USE

WITH CLEAN ROOM CEILING
TYPE SFT

SFT Reducer and Nipple used for exclusive use of

clean room are welded on the both edges of the
flexible tube. Generally, it is used for clean room
ceilings.

The customers can choose one of the two Nipple

types, the Union Type (Slip Nut Type) or Welded
Nipple Type.

It is designed for better safety of earthquake

proof facilities.
FLEXIBLE SS SPRINKLER Connector RFSC

TECHNICAL DATA 1

Available product length and type 700mm to 1800mm (28” to 70”)Braided and Non-braided
Available square bar length 700mm to 1500mm (28” to 59”)
Max. working pressure 14kgf/cm2 (200psi)
Max. ambient temperature 107℃ (225℉ )
Minimum Installation Bending Radius 75mm (3”)
Bending Angles (Flow Direction) up to 180 Degree
Largest K factor for 1/2 inch outlet 5.6[gpm/(psi)½]
Largest K factor for 3/4 inch outlet 14.0[gpm/(psi) 1/2]
Intended use Wet and dry system

TECHNICAL DATA 2

Model Length (mm) Outlet NPT/BSPT

RFSC-700 700 ½” - 3/4”
RFSC-1000 1000 ½” - 3/4”
RFSC-1200 1200 ½” - 3/4”
RFSC-1500 1500 ½” - 3/4”
RFSC-1800 1800 ½” - 3/4”
FLEXIBLE SS SPRINKLER Connector RFSC

INSTALLATION
1. Refer to the relative regulations, codes or
standards for guidance and determination of the
desirable location for the unit in use commercial
ceiling, clean rooms and duct systems, etc.

2. Install the 1" flexible hose nipple (inlet) to the 1"

sprinkler branch pipe by normal sealing and tightening
procedures. Slip nut, which connects nipple with
flexible hose, should be tightened with wrench as
excessive force can damage the O-ring inside.
(Torque: 123 ~ 125 kgf·cm, 108 inch-Lbs)

Make sure the during and after installation of the

flexible hose, any sharp-edged material or tools do
net damage the surface of the flexible hose.

3. Assemble the supplied bracket and square bar as

shown in the picture, and attach the square bar to the
T-bar (ceiling support) with supplied bracket and bolts
considering the horizontal location of the sprinkler
head. At this stage of installation, bolts need to be
fastened loosely. (Torque: 27~28 kgf·cm, 25 inch-Lbs)

Select appropriate square bar length in accordance

with the spacing between ceiling supports (both main
bars and cross bars) is 600 mm ~ 1200 mm. The “T”
shaped beam is assembled with bracket S1.

4. Bend the flexible hose so that the reducer (outlet)

can be reached to the intended sprinkler head
position. The flexible hose should be bent axially with
smooth bending shape, and with minimum installation
bending radius of 6". Flexible hose should not be
twisted in a circumferential direction.

For a longer flexible hose, intermediate hose support

is recommended to secure the movement of the
hoses

5. Verify that the reducer (outlet) is located in the

correct intended position before securing the bracket
bolt. Check and adjust the reducer position by moving
vertically and horizontally along the square bar.
Tighten all the bolts Securely and evenly.

(Torque: 57 ~ 58 kgf·cm, 50 inch-Lbs)

6. Install the sprinkler head to the reducer (outlet), if

necessary adjust the height and location of the
reducer by loosening and tightening the bolt.

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

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Properties of Vibration Shock Seismic Control

COATED FIBER GLASS FABRIC

Fiberglass cloth
Woven fiberglass cloth offers the widest range and the best control over thickness, weight and strength of all
forms of fiberglass textiles. This offers the materials engineer a wide choice of controlled fabric properties to
satisfy design needs and objectives. In general, woven fiberglass cloth has the following properties:

High Tensile Strength:

Fiberglass cloth is one of the strongest textile fibers, having greater specific tensile strength than steel wire of the
same diameter, at a lower weight.

Dimensional Stability:
Fiberglass cloth has low elongation under load, generally 3% or less. Glass fibers produce fabrics with excellent
dimensional stability under various types of conditions.

High Heat Resistance:

Fiberglass cloth has excellent heat resistance at relatively low cost. Fiberglass cloth retains approximately 50% of
room temperature tensile strength at 371°C; approximately 25% at 482°C; with a softening point of 846°C and a
melting point of 1121 °C.

Fire Resistance:
Fiberglass cloth is composed of inorganic materials, and are noncombustible, a natural choice where flammability
is of concern.

Good Thermal Conductivity:

The rapid heat dissipation of fiberglass cloth is particularly important in electrical insulation applications.

Good Chemical Resistance:

Like glass itself, fiberglass cloth is highly resistant to attack by most chemicals.

Outstanding Electrical Properties:

Fiberglass fabric withstands high temperature and has low moisture regain. Along with its high dielectric strength
and low dielectric constant, glass is of major importance and usefulness in the electronics.

Durability:
Being inert, fiberglass cloth is unaffected by sunlight, fungus or bacteria.

Economical:
Fiberglass cloth is lower in cost than many other fabrics for similar applications.
RPL ADS ACR 595 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Spring & Rubber Hangers licensed in 1992 by

Type SH & RH

Hangers effectively Isolate transmission of

Vibration and Structurally Sound.

Suspended Accoustical Ceiling have

become an essential part of modern
structures-Vibration & Sound waves
emanating from the rest of the building are
prevented from reaching the Accoustical
Ceiling.

Hangers prevent many installation errors

by permitting degree of freedom of
movement of piping thus frequently
eliminating the need of Flexible Hose
Connections.

Hangers will also take care of expansion

problems of riser Pipe lines.

Wide range of Hangers are available with

Helical Coil Springs for Low frequency
applications, Rubber-in-Shear for
absorption of Sound and Shock with
Combination of Coil Spring & Rubber-in
Shear for critical areas.

Hangers are sturdily built for long rugged

service with any combination of simple
Rods on top and / or bottom, straps, 'J'
Hooks to clevis, trapeze or roller system.

DESIGN FEATURES

n Steel frame tested to 5x rated load.

Other steel parts are zinc plated
including ACH casing.
n Colour coded steel springs with
nominal deflections up 50mm, laterally
stable with 50% overload capacity.
n Rubber inserts for high frequency
attenuation on type SH also to prevent
drop – rod contacting hanger frame.
n Failsafe steel overload washers
supplied with Rubber Hangers.
n Captive assembly with drop – rod
connector on type SH allows
Precompression of spring prior to
installation if required.
SRH 450 GML JAN 16

n 15° angular misalignment capability.

n Stud or wire fixing on type ACH.

Vibration Shock Seismic Control

 SPRING & RUBBER HANGERS SH & RH

TYPICAL SUSPENSION APPLICATIONS CEILING SUSPENDED

­ Accoustical Ceiling
­ Air Handling Units
­ Air Conditioner
­ Axial Fans
­ Blowers
­ Cooling and Heating Equipment
­ Ductwork
­ Exhaust System
­ Fan Coil Units
­ Fans
­ Lighting Fixtures
­ Mechanical Equipment
­ Pipe Work
­ Platform
­ Small Pumps
­ Ventilation PIPING
­ Etc.etc.

Spring / Rubber Hangers

FAN COIL UNIT

BLOWER

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

2
SPRING HANGERS SH

TYPE SH
TECHNICAL CHARACTERISTICS - SPRING HANGERS
PART NO. COLOUR RATED DEFLECTION DIMENSIONS (mm) Max.
CODE LOAD AT RATED Wt.
LOAD
A B C D E F
(kgs) (mm) (kg)
SH 20 / 10 Purple 10 20
SH 20 / 15 Yellow 15 20
SH 20 / 20 Grey 20 20
100 30.5 40 55 10 M8 0.35
SH 20 / 40 Green 40 20
SH 20 / 70 Red 70 20
SH 15 / 100 Blue 100 15
SH 25 / 30 Yellow 30 25
SH 25 / 60 Green 60 30
SH 25 / 100 Blue 100 25 140 36 70 90 11 M10 1.5
SH 25 / 160 White 160 25
SH 25 / 250 Red 250 25
SH 25 / 200 Red 200 25
SH 25 / 300 Purple 300 25
SH 25 / 400 Grey 400 25
200 54 95 120 17 M16 4.2
SH 25 / 500 Orange 500 25
SH 25 / 600 Brown 600 25
SH 25 / 800 Black 800 25
SH 50 / 100 Yellow 100 50
SH 50 / 200 Green 200 50
SH 50 / 300 Blue 300 50 200 54 95 120 17 M16 4.2
SH 50 / 400 White 400 50
SH 50 / 500 Red/Black 500 50

PIPE BORE WEIGHT PER LOAD PER HANGER AT TYPICAL SPACINGS (KG)
METRE

(mm) (kg) 2m 2.5m 3m 3.5m 4m 4.5m 5m

50 10 20 25 30 - - - -
65 14 28 35 42 49 - - -
80 18 36 45 54 63 - - -
100 26 52 65 78 91 - - -
125 34 68 85 102 119 136 - -
150 44 88 110 132 154 176 - -
200 86 172 215 258 301 344 387 -
250 118 236 295 354 413 472 531 590
300 153 306 382 459 535 612 689 765

Pipe weights are based on BS. 10255, BS EN 10216-1 and BS EN 10217-1for pipes with
maximum volume of water and standard thermal insulation.

INSTALLATION NOTES
§ Pipes should be supported on either side of changes of direction and additional hangers used to

INSTALLATION MANUAL support heavy fittings and vertical droppers.

Refer to IM 029 for detailed § For larger pipe sizes two hangers can be used at each support position.
Installation Instructions

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

3
RUBBER & ACCOUSTICAL HANGERS RH & ACH

TYPE RH PRODUCT SPRING RATED DEFLECTION D I M E N S I O N S (mm) WT

CODE COLOUR LOAD at Rated Load (kg)
(kgs) (mm) +15% A B C D E F MAX
RH 28 Yellow 28 6
RH 50 Blue 50 6 100 36 40 55 10 M8 0.31
RH 80 Red 80 6
RH 110 Yellow 110 8
RH 180 Blue 180 8 140 52 70 90 11 M10 1.24
RH 280 Red 280 8

PIPE BORE WEIGHT PER LOAD PER HANGER AT TYPICAL SPACINGS (KG)
METRE

(mm) (kg) 2m 2.5m 3m 3.5m 4m 4.5m 5m

50 10 20 25 30 - - - -
65 14 28 35 42 49 - - -
80 18 36 45 54 63 - - -
100 26 52 65 78 91 - - -
125 34 68 85 102 119 136 - -
150 44 88 110 132 154 176 - -
200 86 172 215 258 - - - -

TYPE ACH TYPE ACH/S

TECHNICAL CHARACTERISTICS - ACCOUSTIC HANGERS

ACH 20 - 20 2 AS SHOWN 0.06
ACH/S20 - 20 2 AS SHOWN 0.06

INSTALLATION MANUAL
Refer to IM 029 for detailed
Installation Instructions

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Rubber Hanger
Type VMH/D

Style VMH/D are high deflection Neoprene

Hanger with up to 12 mm nominal static
deflection

Hanger will very effectively isolate both

noise and vibration especially in all highly
critical locations

Projecting bush of Rubber Element

prevents steel to steel contact of Hanging
Rod.

Neoprene has excellent aging

characteristics

Upper steel washer will also keep piping,

equipment or suspended ceiling captive
should the rubber element gets destroyed
due to any unforeseen event, such as fire
etc.
HSI 510 LRH JAN 13

Vibration Shock Seismic Control

 TECHNICAL CHARACTERISTICS
CODE NO. LOAD RATING DEFLECTION
EES - 35 ES - 40 SO - 50 ME - 60 HA - 70 ± 15%

Kgs. Kgs. Kgs. Kgs. Kgs. mm

VMH - 52/D 15 20 35 55 - 10
VMH - 58/D - 75 110 170 280 12
VMH - 84/D - 115 225 340 565 12
VMH - 102/D - 680 1070 360 1816 12
All figures are nominal for information only

CODE NO. L W H HD MAX ROD

DIA
mm mm mm mm
VMH - 52/D 58 34 78 33 M10
VMH - 58/D 78 46 115 46 M16
VMH - 84/D 96 66 160 76 M20
All Dimensions are nominal for information only

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 

 

 

 


 

 ./0,11,.2/

3
/.3,1 3
,,3.0.30

4 3212 ,6

325 12,5

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      ! ""#$  #$%

Rubber Hanger Vibration Shock Seismic Control

SIDE WALL SYSTEM

TECHNICAL CHARACTERISTICS
CODE NO. RATED LOAD DEFLECTION APPROX. DIMENSIONS
TYPE TYPE TYPE ± 15%
A B C D E F G
45 55 65
Kgs. Kgs. Kgs. mm mm mm mm mm mm mm mm
TM-19.100 28 50 80 6 80 57 45 9 12 32 5
RPL ADS ACR 550 FEB 13

TM-19.101 110 180 280 8 95 71 60 9 14 45 5

TM-19.102 150 260 400 8 150 115 80 11 22 70 6

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Rubber Hangers Vibration Shock Seismic Control

RPL ADS ACR 551 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

Rubber Hanger Vibration Shock Seismic Control
Type SAM/D

RUBBER ELEMENTS WITH BONDED STEEL

WASHER ON TOP FOR SECURING HANGER
WITH PROJECTING FLANGED BUSH TO
PREVENT METAL -TO - METAL CONTACT

STEEL HANGER FRAME TESTED TO 5X

RATED LOAD

TECHNICAL CHARACTERISTICS
CODE NO. RATED LOAD DEFLECTION APPROX. DIMENSIONS mm
TYPE TYPE TYPE ±15%
S-50 M-60 H-70
Kgs. Kgs. Kgs. mm DØ B
H C
A D
B E
C

SAM-40/D 35 55 75 12 12 38 140 55 50
RPL ADS ACR 552 FEB 13

SAM-55/D 60 95 310 14 16 40 170 75 65

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Spring & Rubber Composite Hanger
Type SRC

RATED LOAD RANGE

30 KGS TO 600 KGS

NOMINAL DEFLECTION
20 mm

Style : SRC Hangers are designed for

highly critical locations for optimum
combined performance of isolation of
Vibrations and control of Noise.

Steel Spring isolates low frequency

mechanical Vibrations.

Rubber element provides excellent

attenuation of higher audible sound. It is
capable of taking up to 30°C misalign-
ment thus preventing drop-rod from
contacting hanger frame.

FAIL-SAFE FEATURE

Overload steel washer will keep sus-

pended ceiling, piping & equipment etc.
captive even if Rubber element is
accidentally destroyed.

TYPICAL APPLICATIONS

 Acoustic Ceilings
HSI 554 SRC FEB 13

Vibration Shock Seismic Control

 ALL FIGURES ARE NOMINAL FOR GUIDANCE

TECHNICAL CHARACTERISTICS
PART NO. COLOUR RATED DEFLECTION DIMENSIONS mm
CODE LOAD AT RATED
LOAD
(kgs) (mm) A C D E F

SRC 25 / 30 Yellow 30 25
SRC 25 / 60 Green 60 30
SRC 25 / 100 Blue 100 25 200 70 90 11 M10
SRC 25 / 160 White 160 25
SRC 25 / 250 Red 250 25
SRC 25 / 200 Red 200 25
SRC 25 / 300 Purple 300 25
SRC 25 / 400 Grey 400 25 260 95 120 17 M16
SRC 25 / 500 Orange 500 25
SRC 25 / 600 Brown 600 25

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

 Open Spring Hanger
Type OSH

Most economical solution for suspension

from ceiling and mounting on floor.

Effective Vibration isolation.

Acoustic inserts for high frequency Noise

attenuation.

Colour coated springs for easy

identification.

TYPICAL APPLICATIONS

• Pipe & Duct work

• Equipment
• etc. etc.
HSI 514 OSH FEB 13

Vibration Shock Seismic Control

 TECHNICAL CHARACTERISTICS

CODE NO. RATED LOAD DEFLECTION SPRING

±15% COLOUR

Kgs. mm

OSH 25/30 30 25 Yellow

OSH 25/60 60 25 Green
OSH 25/100 100 25 Blue
OSH 25/160 160 25 White
OSH 25/200 200 25 Red
OSH 25/230 230 25 Red
OSH 25/300 300 25 Purple
OSH 25/400 400 25 Grey
OSH 25/500 500 25 Orange
OSH 25/600 600 25 Brown
OSH 25/800 800 25 Black

For more detailed information and technical assistance, please contact our Applications Engineering Group.

E-mail : sales@resistoflex.in Mob.: 98182 00361 - 364

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-/01' 2'/34$456678$ -789

 Spring Cushion Hanger
Type SCH

Hangers effectively Isolate transmission of

Vibration and Structurally Sound.

Hangers prevent many installation errors

by permitting degree of freedom of
movement of piping thus frequently
eliminating the need of Flexible Hose
Connections.

Pipe Size Range : 50 mm to 750 mm.

Hangers will also take care of expansion

problems of riser Pipe lines.

Wide range of Hangers are available with

Helical Coil Springs for Low frequency
applications, Rubber-in-Shear for
absorption of Sound and Shock with
Combination of Coil Spring & Rubber-in
Shear for critical areas.

Designed for use with Pipe Rollers as a

cushion spring for a piping system where
vertical movement does not exceed 32
mm.

TECHNICAL CHRACTERSTICS

RATED DEFLECTION AT
COLOUR LOAD RATED LOAD
PART NO. FREE HEIGHT D
CODE (KGS) (MM) H
HSI 442 SCH APR 16

SCH 25/30 YELLOW 30 25 104 57

SCH 25/400 GRAY 400 25 140 82
SCH 25/800 BLACK 800 25 140 82

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Pipe Riser Guide Vibration Shock Seismic Control

Pipe Riser Guide effectively Isolate transmission of

Vibration & Sound to the building structure.

Style TMG has been designed to guide long vertical

Pipe line between support points. Guide will maintain
vertical alignment and also prevent pipe bucking.

Guide can be safely used with pipes with thermal

insulation.

Guides are constructed with structural steel frame pre

– fitted with TURRET MOUNTINGS.

Guides are fully adjustable to suit and firmly grip the

pipe outside diameter.
RPL ADS ACR 528 FEB 13

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Acoustical Pipe Anchor Vibration Shock Seismic Control
Type APA

TECHNICAL CHARACTERISTICS
CODE NO. RATED
CAPACITY DEFLECTION
Kgs. 15% mm
APA-225 225 2.5
APA-1350 1350 2.5
APA-5400 5400 2.5
APA-13500 13500 2.5
APA-22500 22500 2.5

RPL ADS ACR 586 FEB 13

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Resilient Pipe Support Vibration Shock Seismic Control

RPL ADS ACR 526 FEB 13

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Acoustical Pipe Seal Vibration Shock Seismic Control
Type APS

Seals are designed for sealing-off leakage of

noises of equipment room from passing
around space between pipe and
floors/ceilings/walls.

Acoustical Neoprene element is bonded to

the inside surface of two steel sleeve halves.
Smaller sizes have clamping arrangement
and larger sizes are with bolting system. Split
sleeve facilitate installation at any place. By
just tightening the two halves together,
clearance between inner Neoprene face and
piping is completely eliminated.

Concrete can be directly packed around the

seal to make it integral with the floor, ceiling
or wall.

Seal are suitable for temperature up to 95ºC.

Seals are made to suit all standard sizes of

pipes from 20 to 500 mm in lengths of 150
mm and 300 mm diameter.

RPL ADS ACR 587 FEB 13

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Architectural Isolation Vibration Shock Seismic Control

A NEW CONCEPT TO LOW COST NOISE ISOLATION SYSTEM

ARCHITECTURAL ISOLATION BY THE USE OF NEOPRENE SPRINGS

TO REDUCE SOUND AND VIBRATION TRANSMISSION WITHIN STRUCTURES

ISOLATED RECORDING ROOM AT REVERBERATION CHAMBER, HEMI ANECHOIC AND DYNAMOMETER

LAKSHMI STUDIO, NOIDA TEST BED INSTALLED AT ARAI

RESILIENT WALL SWAY BRACES PREVENT

STRUCTURE BORNE NOISE TRANSMISSION
TO RECORDING ROOM WALL FROM MAIN
BUILDING STRUCTURE

PADS ISOLATE RECORDING ROOM WALL

FROM BUILDING FLOOR.

TYPICAL APPLICATIONS

Air Ports Generator Rooms

Anechoic Rooms Health Care Facilities
Apartments Hospitals
Arenas Hotels
Art Galleries Industrial Buildings
Athletic Facilities Inspection Rooms
Audio Visual Rooms Lecture Halls
Auditoriums Libraries
Banks Living Rooms
Bedrooms Mechanical Rooms
Billiard Parlours Music Practice Rooms
Bowing Alleys Meeting Rooms
The Noise isolation efficiency of mechanical or gypsum board Cinema Halls Motels
walls and ceiling is seriously threatened when solid Cafeterias Projection Rooms
connections are made to noisy structural walls, ceiling or floors Conference Rooms Rest Rooms
RPL ADS ACR 560 FEB 13

Class Rooms Sound studios

Simple inexpensive NEOPRENE isolators can break these Dance Floors Television studios
sound paths when used as wall braces, ceiling hangers or Doctor's Chambers Theatres
floor supports. The modest cost of this protection is more Executive Offices Video parlours
that paid for by quieter occupied space Elevator's Rooms etc.etc.

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Isolated Floors, Walls Vibration Shock Seismic Control

& CEILING SYSTEM

Buildings are usually located near busy streets with heavy vehicular
traffic & many times, near passing Trains & Aircrafts; Heavy
construction Machinery & Diesel Generating Sets etc. Operating
nearby create loud external Noise. Noisy Mechanical equipment rooms
(HVAC) located over prime office space are a source of constant
annoyance. Frequent dropping of heavy articles on floors is a common
occurance. The increasing use of light weight materials & structures in
modern buildings add to the problem of Noise.

But some space in Buildings, Television Studios, Computer Rooms,

Lecture Rooms, Board Rooms, Hospital Rooms, Offices, Auditoriums, SOUND ISOLATION IMPACT ISOLATION
Libraries, Theaters, and Dance Floors must be Vibration free & have an
imperceptible Noise level.

NOISE AND VIBRATION Isolation efficiency of structural or even

gypsum board walls & ceilings is seriously impaired when solid
connections are made to noisy Floors, Walls & Ceilings.

“RESISTOFLEX” system is to resiliently decouple the airborne Noise

and Impact or Vibratory source from the building structure.

An air gap is introduced between relatively air tight constructions to VIBRATION ISOLATION
reduce air borne Sound transmission.

“RESISTOFLEX” Isolators, Floor Supports, Wall Braces & Ceiling

Hangers provide structural support without interfering with the air gap
to very effectively break the Sound paths.

Floors are floated to Isolate both actively as well as passively Impact &
mechanically transmitted Noise.

Walls are Isolated to prevent the flanking of Floating Floors or to

adjacent spaces by resting the walls on the perimeter of the Floating
Floor so the Floor Isolation System becomes the wall isolation as well
or rest the isolated wall on the structural slab with Neoprene Pads
supporting the walls and a Caulked Fibre glass seal between the
Floating Floor & the wall.

For walls which are high & unstable, Resilient Wall Sway Braces
anchored to the structural wall for protection against buckling or
toppling are used.

All independent walls resting on Resilient Pads and not locked at top
are braced by Sway Braces.

Isolated wall are also used with Floating Floors to reduce Sound
transmission between adjacent spaces.

Resiliently suspended Ceilings reduce structural Noise & Vibration

form floor above.
RPL ADS ACR 565 FEB 13

Isolated 'Floors' Walls & Ceilings simultaneously give very effective

Thermal insulation as well.

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Floating Floor Vibration Shock Seismic Control

The complete floor of a bowling alley is supported on Vibration Isolators to ensure that Vibration & Noise are not
transmitted to the ceiling of the Ground Floor below. Picture shows the isolators in position before final casting of
the sub-floor.

RPL ADS ACR 567 FEB 13

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Floating Concrete Floor Vibration Shock Seismic Control

RPL ADS ACR 568 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

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Floating Concrete Floor Vibration Shock Seismic Control

“Resistoflex” Floating Concrete Floor System isolates building structure and significantly attenuates
Mechanical Equipments and Industrial Noise, Loud Musical Instruments & severe impact Noise sources.

TYPICAL MODE OF INSTALLATIONS

Concrete Floor on Isolation Pads Concrete Floor with Jack-Up & Leveling Mounts

RPL ADS ACR 570 FEB 13

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Floating Concrete Floor Vibration Shock Seismic Control

RESILIENT SUPPORT PADS

RPL ADS ACR 573 FEB 13

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Floating Concrete Floor Vibration Shock Seismic Control

SECTIONAL DETAIL OF INTERNAL FLOATING FLOOR PERIPHERY

RPL ADS ACR 572 FEB 13

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Floating Concrete Floor Vibration Shock Seismic Control

TYPICAL INSTALLATION USING READY-TO-USE FLOATING FLOOR PANELS

RPL ADS ACR 571 FEB 13

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Floating Concrete Floor Vibration Shock Seismic Control

NOISY MECHANICAL EQUIPMENT ROOM

Increasing use of light weight materials & structures in “RESISTOFLEX“ Floating Concrete Floor System
modern buildings require positive improvement in prevents Noise from passing through the floor slab to
Noise insulation of plant rooms to offices, recording the neighboring areas.
studios, audiometry rooms, hospitals etc.
RPL ADS ACR 569 FEB 13

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Floating Concrete Floor Vibration Shock Seismic Control

SUPPORT CHANNEL FOR SHUTTERING PROFILE

TECHNICAL CHARACTERISTICS

PAD SIZE W H L

(mm x mm) (mm) (mm) (mm)

75 X 75 86 32
112 X 112 126 48
150 X 150 166 64

RPL ADS ACR 574 FEB 13

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 Jack - Up Floor System
Type JNM

RESISTOFLEX Jack – Up Floor System is

a fool proof, safest & most convenient
method of creating from a minimum of 80
mm, 100 mm standard & upto150 mm
special floating floor by just turning bolts.

Jack-Up Mount Style JNM consists of a

bell shaped housing(with M20 bolt) which
shrouds time proven, exposure proof, 50
mm thick stable resilient NEOPRENE
element with negligible creep & permanent
set to support the weight & simultaneously
provide the desirable positive & clear air
gap from minimum of 25 mm, standard 50
mm or up to 100 mm special.

The spacing of Jack – Up Mounts is

determined by the thickness of floor slab &
reinforcing system, it can normally be up to
1200 mm in both the directions.

Reinforcing bars or wire mesh can be very

easily supported on integral external lugs
of the bell housing at about 25 mm from
bottom.

SIMPLE MODE OF INSTALLATION

TYPICAL INSTALLATION
¡Prepare smooth & level sub – floor.

¡Cover the entire area with polyethylene

plastic sheeting to act as concrete
SPRING & RUBBER release layer. Seal all joints with
HANGER
waterproof tape.

¡Place Jack – Up Mounts with rubber plug

in position on plastic sheeting.

¡Lay steel reinforcing bars or steel mesh.

¡Pour concrete monolithically.

¡After concrete is fully set, remove rubber

plugs & insert adjusting bolts.

¡Turn adjusting bolts to lift the floor slab to

the operating height to create the
required air gap.

¡Grout flush adjusting bolt holes.

RMM 430 JNM AUG 15

HORIZONTAL JACK-UP MOUNTS TYPE : JNM OPEN SPRING

RESTRAINTS MOUNTS

SERVICE FLOOR

Vibration Shock Seismic Control

JACK-UP FLOOR SYSTEM JNM

FLOOR IN POURED FLOOR RAISED TO

POSITION OPERATING HEIGHT

TECHNICAL CHARACTERISTICS
S.No. CODE RATED DEFLECTION NOMINAL DIMENSIONS mm
LOAD ±15%

A B C D
(kgs) (mm)
1 JNM-225/40 225 8
JNM-315/50 315 8
JNM-405/60 405 8 100 25 118 140
JNM-590/50 590 8
JNM-770/60 770 8
2 JNM-1270/50 1270 8
100 25 136 160
JNM-1590/60 1590 8

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Jack-Up Mounts Vibration Shock Seismic Control

INSTALLATION INSTRUCTIONS

JACK – UP MOUNTS are supplied with rubber plug

and Neoprene rubber element held inside the housing
with adhesive tape.

It is not necessary to remove the tape- it will get

broken automatically when floor is raised.

Jack Screw to raise the floor is kept separately.

The sub- floor on which floating floor is to be laid, must

be smooth, level & have the same pitch as the top of
the floating floor.

Clean the sub–floor & cover the entire area with

minimum 0.15 mm thick plastic sheeting to act as
concrete release layer. If there are any joints, all
must be taped with water – proof tape to avoid any
penetration of cement slurry.

Place 'Resistoflex JACK – UP MOUNTS with

Neoprene elements & rubber plug at proper
locations on the plastic sheet.

RPL ADS ACR 575 FEB 13

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Floating Wood Floor Vibration Shock Seismic Control

“Resistoflex” Wooden Floating Floor System on Vibration Floating Floor passively isolates external Noise from
Isolators provide the desirable elasticity for improvement buildings structure to recording studios, sound
of the performance & reduction of strain to the legs of rooms, television and movie studios, audiometering
professional & amateur dance groups or Gymnasts. rooms and hospitals etc.

Floating Floor actively also reduces transmission of

Impact Noise produced by pedestrian traffic or dropped
objects.

TYPICAL MODE OF INSTALLATIONS

Floating Wood Floor Floating Wood Floor

on wooden structure on concrete structure

Isolation Mount
RPL ADS ACR 576 FEB 13

Leveling arrangement
Isolation Mount
Height saving arrangement

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Floating Walls & Partitions Vibration Shock Seismic Control

“Resistoflex” Resilient Mounting System effectively Masonary Walls & Gypsom Boards(Dry Wall) partitions
reduce transmission of Noise to adjacent areas and by supporting them on floating concrete floor, bracing
avoid flanking around floating floors / or resiliently them for stability with resilient Sway Brace &
supported ceilings by isolating anchoring the top by means of resilient Restraining
Brackets.

TYPICAL MODE OF INSTALLATION

RPL ADS ACR 577 FEB 13

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Floating Wood Floor Vibration Shock Seismic Control

FLOOR SUPPORT WITH INTEGRAL

LEVELLING ARRANGEMENT
TYPE : WFS

TECHNICAL CHARACTERISTICS
CODE NO. RATED LOAD DEFLECTION APPROX. DIMENSIONS mm
±20%
TYPE TYPE TYPE A B C H
45 55 65 MIN. MAX.
Kgs. Kgs. Kgs. mm
WFS-19.100 28 50 80 6 44 22 40 42 52
WFS-19.101 110 180 280 8 70 35 35 55 70
WFS-19.102 150 260 400 8 108 54 100 85 105
RPL ADS ACR 578 FEB 13

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Floating Walls Vibration Shock Seismic Control

MASONRY WALLS

RESTRAINING BRACKETS for holding

at the top

SWAY BRACE for preventing

toppling / buckling

SUPPORT PAD for Isolating from floor

RPL ADS ACR 579 FEB 13

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Floating Walls Vibration Shock Seismic Control

MASONRY / DRY WALL CONSTRUCTION

RESILIENT WALL SWAY BRACE

For all independent walls resting on resilient pads

or if the walls are so high and/or extremely long as
to be unstable & if they are not locked at top, they
must essentially be protected against buckling,
toppling/ overturning by means of Resilient Wall
Sway Braces anchored to the structural walls.

Buckling forces become extremely small when

Braces are provided both horizontally & vertically
as they maintain a very low I/r (column) ratio.

Braces are normally placed 1200 mm apart STYLE: SBDN

horizontally with the vertical spacing of rows
Double Neoprene for gap adjustment
depending upon the height/ thickness of wall. Two
rows are usually sufficient for most applications
unless restrained weight call for closer spacing.

Sway Braces are NOT suitable for vertical support

– all walls must be properly supported at base.

STYLE: SBCT
Neoprene Square Cell Pad
Interlocked with clips for narrow
Gap/limited space
RPL ADS ACR 580 FEB 13

STYLE: SBCS
Channel Shaped with Neoprene Square
Cell Pad for light weight horizontal furring

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 Horizontal Restrain
Type SBDN

Style SBDN are Double Acting Neoprene

Side Restrain with a FAILSAFE feature in 3
planes having a bracket for bolting to the
building structure and a projecting anchor
bolt with adjusting nuts for bolting to
equipment.

TYPICAL INSTALLATION

SPRING & RUBBER

HANGER
RMM 500 LSB AUG 15

HORIZONTAL JACK-UP MOUNTS OPEN SPRING

RESTRAINT MOUNTS
TYPE : SBDN

SERVICE FLOOR

Vibration Shock Seismic Control

TECHNICAL CHARACTERISTICS
CODE NO. Rated axial resistance
Resistance to Vertical Motion
& deflection if stressed

LOAD Defl. LOAD Defl. LOAD Defl. LOAD Defl. LOAD Defl. LOAD Defl.
(kg) (mm) (kg) (mm) (kg) (mm) (kg) (mm) (kg) (mm) (kg) (mm)

SBDN-120/60 2.5 2.5 38 3.8 2.6 1.2 5.4 2.5 8.2 3.8 10.7 5.0
SBDN-135/60 120 2.5 182 6
3.8 16.7 1.2 35 2.5 53 3.8 70 5.0

DEFLECTION + 15%

APPROXIMATE DIMENSIONS IN MM

CODE NO. A B C D K L M N

SBDN-120 120 50 95 12 5 75 105 M-10

SBDN-135 135 65 110 12 5 75 105 M-10

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Floating Walls Vibration Shock Seismic Control

RESILIENT WALL SWAY BRACE

TYPE : SBCT

Type SBCT has been designed for narrow gap/limited

space. Neoprene Square Cell Pad is interlocked
between 2 formed clips with holes for fastening to the
building structure & the floating wall.

TECHNICAL CHARACTERISTICS
CODE NO. RATED HORIZONTAL RESTRAINT MINIMUM MINIMUM BRACED
& DEFLECTION IF STRESSED ASSIGNED WEIGHT TO
WEIGHT ESTABLISH
15 Hertz
LOAD kgs DEFL. ±15% mm kgs mm

SBCT-25 40 1.25 115 23

SBCT-50 118 1.25 230 46

APPROXIMATE DIMENSIONS IN MM

CODE NO. A B C DØ NOS E K P

SWCT-25 95 25 65 11 2 - 4 40
RPL ADS ACR 581 FEB 13

SWCT-50 95 50 65 11 4 24 4 40

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Floating Walls Vibration Shock Seismic Control

RESILIENT WALL SWAY BRACE

TYPE : SBCS

Style SBCS is channel shaped with Neoprene Square

Cell Pad for support of light weight horizontal steel/wood
furring.

CHARACTERISTICS
Maximum assigned Minimum braced weight
weight to establish 15 Hertz
Kgs Kgs
90 45

APPROXIMATE DIMENSIONS IN MM

CODE NO. A B C DØ NOS E G K P

RPL ADS ACR 582 FEB 13

SBCS-50 85 50 70 11 2 24 55 4 80

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Floating Walls Vibration Shock Seismic Control

MASONRY WALLS
RESILIENT WALL SUPPORT
TYPE : WSP

All walls must be supported on Neoprene Isolation Pads

laid continuously on the periphery of the structural floor.

TECHNICAL CHARACTERISTICS
CODE NO. RATED CAPACITY DEFLECTION Nominal Size
TYPE TYPE ±15%
Width Length Thickness
S-48 H-68
Kgs. Kgs. mm mm mm mm
WSP-112 3500 7000 2.5 112 900 20
WSP-225 7000 14000 2.5 225 900 20

Intermediate load capacity Pads can be supplied against specific requirement

RPL ADS ACR 583 FEB 13

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Floating Walls Vibration Shock Seismic Control

RESTRAINING ANGLE BRACKET

TYPE : RAB

All walls constructed on Neoprene support Pads must be

kept upright by holding at the top between a pair of
Neoprene Lined Angle Brackets continuously bolted to
the ceiling to from a channel

TECHNICAL CHARACTERISTICS
TECHNICAL CHARACTERISTICS
CODE NO. APPROXIMATE DIMENSIONS IN mm

HEIGHT WIDTH LENGTH HOLE DIA

RAB : 5040 50 40 900 8

RPL ADS ACR 584 FEB 13

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Floating Ceiling Vibration Shock Seismic Control

"Resistoflex" Floating Ceiling System very effectively Resilient Neoprene / Steel Coil Spring Hangers
creates quiet spaces above and / or below noisy prevent transmission of high/low frequency Noise /
areas. Vibrations.

TYPICAL MODE OF INSTALLATION

RPL ADS ACR 585 FEB 13

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Isolated Floating Room Vibration Shock Seismic Control

REVERBERATION CHAMBERS AT ARAI

RPL ADS ACR 561 FEB 13

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Isolated Floating Room Vibration Shock Seismic Control

HEMI ANECHOIC CHAMBER

AND
DYNAMOMETER TEST BED ROOM AT ARAI

RPL ADS ACR 562 FEB 13

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Installation of Vibration Shock Seismic Control

REVERBERATION CHAMBERS
AT ARAI

RPL ADS ACR 564 FEB 13

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Installation of Vibration Shock Seismic Control

HEMI ANECHOIC CHAMBER AND

DYNAMOMETER TEST BED ROOM AT ARAI

RPL ADS ACR 563 FEB 13

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Isolated Machinery Room Vibration Shock Seismic Control

AIR CONDITIONING PLANT ROOM

RPL ADS ACR 566 FEB 13

For more detailed information and technical assistance, please contact our Applications Engineering Group.

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 B -103, SECTOR-5, NOIDA - 201 301 Tel.: (0120) 2420321, 2420322, 24220315
Registered Office : B -15, Friends Colony (West), New Delhi - 110 065 Corporate Identity Number : U74899DL1984PTC019098
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