ADVANCED MARINE BEARINGS

TENMAT is a leading manufacturer of

specialised, high performance engineering
materials and components with over 100
years of experience.

TENMAT stands for innovation, safety

products, commitment to our customers and
the latest quality standards worldwide.

A World of Materials
The diversified product range includes composite
wear parts and bearings, engineering ceramics,
high temperature resistant materials, and passive
fire protection solutions.

Commitment to Quality
TENMAT operates an ISO 9001:2008 Quality
Management System for the design, development and
manufacture of specialised high performance
engineering materials and components.
High Performance Marine Bearings

FEROFORM and RAILKO composite The innovative TENMAT FEROFORM and RAILKO
technical
materials, exclusively manufactured by TENMAT, material grades combine high strength with excellent
are widely recognised as the industry standard for wear resistance and durability, yielding high
demanding applications such as stern tube, rudder, performance bearings for all types of service
and propeller bearings, deck equipment, steering conditions, from the arctic to the tropics, from coastal
gear and many other applications. waters to deep sea conditions.

TENMAT bearings offer considerable benefits in TENMAT marine bearings are proven not to support
terms of performance, price, reliability, design, ease biofouling which can help avoid shaft damage due to
of use and installation. organic growth on the bearing.

Material Benefits:
- Market-Leading Wear Performance - Accepts Misalignment
Resistant to abrasion and arduous conditions. Exhibit consistently Capable of absorbing high shock loading, thus accommodating
lower wear rates against all competitive materials, hence longer life. misalignment without damage or fracturing.

- Does Not Require Clean Water Systems - Approved by All Major Classification Societies
Superior resistance to abrasion in arduous conditions and sand-laden FEROFORM and RAILKO marine bearings boast full approvals from all
waters. leading marine classification bodies worldwide.

- Excellent Stability - Significant Worldwide Stocks

Minimal water swell and thermal expansion allow tighter clearances, Stocks of FEROFORM and RAILKO base tubes are held at strategic
ensuring longer life. locations worldwide, allowing for immediate despatch to any location.

- Low Noise - Works with All Lubrication Systems

Lower noise levels due to lower friction levels and tighter tolerances. Can operate with sea water, oil, or grease lubrication.

- Shaft Friendly - Easy to Machine, Fit, and Install

Excellent with stainless steel, gunmetal, and nickel aluminium bronze Available in sheets, tubes, and fully machined components as well as
counterfaces, alongside other common shaft materials. complete bearing packages with bronze housings.
Applications:
 Stern Tube Bearings
 Stave Bearings
 Propeller Bearings
 Rudder Bearings
 Hatch Cover Pads
 Deck Equipment
 Sheave Bearings
 Stinger Rollers and Stern Rollers
 Cargo Pump Bearings

TENMAT easy-to-install marine bearings are hard wearing, outliving rubber and
thermoplastics. This gives longer operational life and lower operational costs which
are ideal characteristics for all commercial ships; Bulkers, Tankers, Panamax,
Afromax, Cruise Ships etc.

Using these proven bearings, ship owners no longer cause contamination of the
aquatic environment inherent to oil-lubricated bearing systems. Thus, the potential
risk of large environmental fines is avoided.

TENMAT marine bearings are ideal in sediment rich waters, with over 8000
vessels being successfully fitted to date.
Applications:
 Stern Tube Bearings
 Stave Bearings
 Propeller Bearings
 A-Bracket Bearings
 Rudder Bearings
 Steering Gear
 Rudder Stock Bushes
 Pintle Bushes
 Winches and Deck Equipment

TENMAT is the trusted supplier to all major Navies worldwide, having been at the
forefront of marine bearing technology for decades. Over 35 Navies around the
world continue to specify FEROFORM and RAILKO bearings for safety critical
applications.

FEROFORM and RAILKO marine bearings have been fitted on a wide range of Naval
vessels, including patrol boats, corvettes, frigates, destroyers, submarines and
aircraft carriers.

TENMAT bearings succeed in the abrasive conditions often found in Naval

operations. They offer the best combination of durability and low friction to be found
on the market today.
Applications:
 Stern Tube, Propeller, Impulsors
 Rudder, Dive Plane, Tiller Bearings
 Aerial, Antenna Hinge Point
 Snort Mast and Periscope Bearings
 Steering Gear Bearings
 Retractable Bollard, Capstan,
Winches
 Torpedo Tube Door Bearings
 Main Hatch Bearings

FEROFORM and RAILKO composite materials are approved and used by Navies
for propeller shaft and rudder bearings in submarines where reliable bearing
operation is vital. The low friction and low stick-slip of TENMAT composites give a
low noise signature that is ideal for stealth operation.

Their reinforced matrix structure, using high quality engineering fibres, anti-scuffing
resins and integral lubricants, successfully absorbs shocks and vibrations. This
yields significant reductions in noise and enhances bearing life, even in estuarine
waters.

TENMAT marine bearings have been specified and installed in over 120
submarines for deployment all over the globe, from Arctic to Tropic seas.
Applications:
 Stern Rollers and Stinger Rollers
 Hatch Cover Pads
 Anchor Chain Guides
 Davit, Sheave & Winch, Lifeboat
Releases
 Cylinder Rod End Bushes
 Cable Layers
 Cutter Head Bearings
 Bow Door Bushes
 High Temperature Load Pads

FEROFORM F3637, PR18, and T814 are the ideal choices when replacing metallic
bearings with a lubricant free solution. FEROFORM material grades will not seize or
pressure weld and avoid the frequent greasing and maintenance inherent to metallic
bushes. This makes FEROFORM bushes excellent for safety critical applications
like lifeboat davits.

For over 25 years FEROFORM F3637 high temperature insulation bearing pads
have been the industry standard providing maintenance free performance in
bitumen and asphalt tankers.
Total Marine Solutions

Stern Tube Bearings

 Steering Gear Wear Parts

Rudder Bearings
Applications:
 Anchor Chain Guides
 Davit, Sheave & Winch Bearings
 Life Boat Release Bushes
 Cylinder Rod End Bushes
 FPSO Risers and Mooring
Systems
 FPSO Turret Slide Pads
 Stinger Roller Bearings

TENMAT high performance bearings are widely used in the offshore industry,
supporting oil and gas production around the world. They excel in all sea conditions
from shallow coastal waters in the tropics to deep sea wells in the North Sea.

FEROFORM T814 is the leading bearing solution for replacing metallic bearings with
a lubricant free solution for offshore applications. FEROFORM T814 will not seize or
pressure weld.

The dry running capability of FEROFORM T814 minimises maintenance

requirements. Thus it is ideal for offshore applications such as risers and FPSO
turret bearings where maintenance proves difficult and expensive.
TENMAT bearings can be supplied in a wide range of formats from base tubes to
fully machined bearings including split bearings, stave bearings and even complete
packages in bronze or stainless steel housings.
Our Technical Services department is available to provide guidance on material
selection, part design and technical solutions.

Available Base Tube Sizes

 Internal diameter from 20mm up to 1150 mm
 External diameter from 30mm up to 1260 mm
 Lengths up to 1200 mm
 Custom sizes available on request
 Sheet material also available

TENMAT is fully committed to the highest standards of customer service. This

commitment is exemplified by the significant stocks of FEROFORM and RAILKO
base tubes held at strategic locations worldwide. Stock is designed to cover the
widest range of shaft sizes currently in use and allow for speedy delivery.
Immediate despatch to any location can be arranged.
Non-stock sizes can be typically manufactured and despatched within 2-3 days.
 TENMAT F3637 T12 T14 T814 PR18 NF21/NF22
Coefficient of Friction 0.04 - 0.08 *A
0.13 - 0.15 0.08 - 0.19 0.08 - 0.15 0.07 - 0.10 0.08 - 0.12
(DRY) 0.36 - 0.4 *B

% Swell in Water @20 °C 0.5 0.2 0.2 0.25 0.05 0.2

Ultimate Compressive 302 *C 310 *C 300 *C 310 *C 259 *C 192 *C

Strength (MPa) >400 *D >400 *D >400 *D >400 *D 395 *D >400 *D

Compressive Yield
2.8 4.4 3.6 4.3 2.7 2.4
@ 68.9 MPa (%)
Normal Working Pressure
80 75 75 75 87.5 55
(MPa)

Thermal Normal 29 50 50 43 93 43
Expansion
(10-6/°C) Parallel 15 21 30 31 N/A 43

Maximum Continuous 200 100 100 100 100 120

Operating
Temperature
(°C) Intermittent 300 120 120 120 120 140

Shear Strength
101 62 65 72 N/A 41
(MPa)
Impact Strength
90 72 109 83 33 32
(kJ/m2)
Hardness
38 18 15 17 18 23
(Brinell)
Density (g/cm3) 1.54 1.30 1.29 1.31 1.28 1.64
*A Typical friction during normal operation wet *C Tested on BS2782 on 25 x 25 x 25 sample
*B Typical friction tested dry *D Tested on 50 x 50 x 5 sample, 400 MP is limit of test equipment
Tested on sheet samples, PR18 tested on tube samples
The information contained in this data sheet is presented in good faith. They are typical test results tested generally in accordance with BS 2782 and ASTM test methods
and should not be used for specifications. TENMAT does not warrant the conformity of its materials to the listed properties or their suitability for any particular purpose.
For further information please contact our Technical Sales Department on +44 161 872 2181.
TENMAT materials are readily machinable by conventional machine shop
techniques. It is preferable to use tungsten carbide tools.

Please request a TENMAT machining manual for full details.

TENMAT marine bearings are preferably interference fitted into the housing. This is
most readily achieved by freeze fitting the bearing into the housing. Interference
fitting prevents bearing rotation or axial movement and is easily achieved using liquid
nitrogen.

FEROFORM and RAILKO bearings can be retained mechanically. Most common

methods are suitable: anti-rotation keys, keeper- bars, retaining rings, flanges and
stepped housings.

Chocking is another widely used method of bearing retention. It is particularly good

for ensuring bearing to shaft alignment.

Please request a TENMAT installation manual for full details.

TENMAT bearing materials are made without the use of hazardous products.
Comprehensive Material Safety Data Sheets are available for all products detailing
recommended procedures on request.

It is important that all national, state & local health & safety legislation are complied
with.
TENMAT is committed to the ongoing development of new products and solutions in the field

of composite and engineering materials. This dedication has been recognised in 2012 and 2013
through receiving the highest official award in Great Britain, the prestigious Queen’s Award for
Enterprise in the categories Innovation and International Trade.

Custom Component Manufacture

TENMAT materials can be supplied as semi-finished products or, if required by the customer,

our ISO 9001-2008 certified machine shop can produce fully machined items to specification.

Materials Expertise
With over 100 years of experience in Composite Engineering Materials, TENMAT offers

customers information on material developments, characteristics, suitability and applications.

Technical Ingenuity
TENMAT has been proven to consistently produce industry leading advanced composites,
developed in our in-house R&D Technical Laboratories.

Problem Solvers
The diverse range of high performance composite materials manufactured by TENMAT offer

the engineer a wide array of solutions to improve wear resistance, withstand extreme
temperatures, resist high impacts and survive in harsh, corrosive environments.

Component Design
If design services, drawings and fitting instructions are required, TENMAT will work with

customers in developing the most suitable solution to their particular problem.

TENMAT offers a 15 year manufacturer’s defect warranty on FEROFORM and
RAILKO marine bearings*. This ensures complete peace of mind when specifying
TENMAT advanced marine bearings.

This warranty is subject to standard

operating
parameters, as underwritten by all major
marine classification societies, and is
applicable to :

- Any specific brand of water quality

package.

- Any shaft liner.

In the unlikely event of a proven

bearing failure, TENMAT will provide
a replacement bearing free of charge.

TENMAT marine solutions have been at

the forefront of marine transportation for
decades and continue to be trusted for
diverse, challenging, safety-critical
applications.

This is proven by the fact that FEROFORM

and RAILKO marine bearings boast full
approvals from all leading marine
classification bodies worldwide.

This adds to the significant number of full

Naval approvals, alongside the exclusive
specifications which FEROFORM and
RAILKO marine bearings have on
commercial fleets.
 FEROFORM FEROGLIDE

REFRAVER REFEL ARCLEX

NITRASIL SINDANYO

TENMAT is committed to the highest standards in customer service and

our international staff is looking forward to assist you.

CORPORATE HQ NORTH AMERICA SCANDINAVIA

TENMAT Ltd. TENMAT Inc. TENMAT
Ashburton Rd West
Trafford Park 23 Copper Drive Stureplan 13
Manchester M17 1TD Newport, DE 19804 111 45 Stockholm
England USA Sweden
Tel.: +44(0)161 872 2181 Tel.: +1 302-633-6600 Tel: +46 (0) 8 612 68 50
Fax: +44(0)161 872 7596 Fax: +1 302-633-6838 Fax: +44 (0) 161 872 7596
Email: marine@tenmat.com Email: info@tenmatus.com Email: marine@tenmat.com
Web: www.tenmat.com Web: www.tenmatus.com Web: www.tenmat.com

Visit us on the web at www.TENMAT-MARINE.com

ITALY FRANCE GERMANY
TENMAT TENMAT TENMAT

Via Dante, 2/48 56 Avenue Foch

16121 Genova 77370 Nangis
Italy France
Tel.: +39 (0) 10 5451343 Tel.: +33 (0) 1 60 585656 Tel.: +49 (0) 7151 1338468
Fax: +39 (0) 10 5760553 Fax: +33 (0) 1 64 083617 Fax: +44 (0) 161 872 7596
Email: info@tenmat.it Email: info@tenmat.fr Email: info@tenmat.de
Web: www.tenmat.it Web: www.tenmat.fr Web: www.tenmat.de

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