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AVANTHI3

The document outlines the specifications and guidelines for selecting Shanthi Planetary Gear Units, detailing their designations, scope, symbols, and units. It provides comprehensive information on gear types, transmission ratios, service factors, and selection criteria for various applications, emphasizing the importance of efficiency and reliability. Additionally, it includes maintenance notes, lubrication requirements, and operating conditions to ensure optimal performance of the gear units.

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0% found this document useful (0 votes)

46 views47 pages

AVANTHI3

Uploaded by

prashanthaundhe622

We take content rights seriously. If you suspect this is your content, claim it here.

Available Formats

Download as PDF, TXT or read online on Scribd

You are on page 1/ 47

Contents: Pages

1. Designation 1
2. Scope 2, 3
3. Symbols and units 4
4. Guidelines for selection, 5
4.1 Constant Power Rating 5
4.2 Variable Power Rating 6
4.3 Service factors for different applications 7
4.4 Selection examples
4.4.1 Calculation 1 8
4.4.2 Calculation 2 9
4.4.3 Calculation 3 10
5. Possible combinations - Details on planetary gear units
Dimensions, weights, transmission ratios, speeds, power ratings
5.1 Type SP2NND size 11 - 34 13
Ratio, Speed and nominal power ratings + Thermal capacities 14
5.2 Type SP2NNS size 11 - 34 15
Ratio, Speed and nominal power ratings + Thermal capacities 16
5.3 Type SP2HND size 11 - 34 17
Ratio, Speed and nominal power ratings + Thermal capacities 18
5.4 Type SP2HNS size 11 - 34 19
Ratio, Speed and nominal power ratings + Thermal capacities 20
5.5 Type SP3NND size 11 - 34 21
Ratio, Speed and nominal power ratings + Thermal capacities 22
5.6 Type SP3NNS size 11 - 34 23
Ratio, Speed and nominal power ratings + Thermal capacities 24
5.7 Type SP3HND size 11 - 34 25
Ratio, Speed and nominal power ratings + Thermal capacities 26
5.8 Type SP3HNS size 11 - 34 27
Ratio, Speed and nominal power ratings + Thermal capacities 28
5.9 Type SP2NBD size 11 - 34 29
Ratio, Speed and nominal power ratings + Thermal capacities 30
5.10 Type SP2NBS size 11 - 34 31
Ratio, Speed and nominal power ratings + Thermal capacities 32
5.11 Type SP2HBD size 15 - 26 33
Ratio, Speed and nominal power ratings + Thermal capacities 34
5.12 Type SP2HBS size 15 - 26 35
Ratio, Speed and nominal power ratings + Thermal capacities 36
6. Actual ratios
6.1 SP2NN, SP2HN, SP3NN 37
6.2 SP2NB, SP3HN 38
6.3 SP2HB 39
7. Foot mounting 40
8. Torque reaction arm
8.1 Torque reaction arm on one side 41
8.2 Two sides with Torsion shaft support on request
9. Output flange - Bore pattern 42
10. Identification of shaft arrangement 43
1.DESIGNATION
S P 3 H B S 20
Size
H Hollow shaft with key connection

D Hollow shaft with Shrink disc connection

O Hollow shaft with Involute splines

S Solid shaft with key connection

I Solid shaft with Involute splines

N B-Bevel / H-Helical stage / N-Null gear stage

H H- Helical stage / N-Null gear stage

2,3 Number of planetary gear stages

P Planetary

S Shanthi

SP2NND (Ratio 25-40) SP2HND (Ratio 45-125)

SP3NND (Ratio 140-280) SP3HND (Ratio 280-900)

SP2NBD (Ratio 30-95) SP2HBD (Ratio 112-500)

1
2. Scope

Shanthi Gears takes advantage over many years of accumulated expertise and experience in designing and
manufacturing of transmission products. This expertise results in a series of speed reducing Planetary Gear Units,
offering high load carrying capacities, increased efficiency, quiet running and reliability.
The wide ranges of Shanthi Planetary gears are designed for industrial applications. The modular design,
high efficiency, simple mounting and high quality enables to serve all the industries from agriculture to aircraft
manufacturers. The optimised torque performance and high load carrying capacity, with a fine progressive series
covering a nominal torque range between 4,000 to 15,04,000 Nm serves wide range of customers. Shanthi gears
also provide a wide range of accessories for input, output and mounting which best suites the customer
requirement and application.
Shanthi gears team of design engineers and planning make sure that optimum solution with regard to
technology and efficiency are quickly realised for customer requirements that cannot be met with the standard
products.
Details:
Types and transmission ratios
The representations on pages 1, illustrate the standard types and the irrespective transmission ratio ranges.
For actual ratios, refer pages 37-39.
Housing
Heavily loaded housing parts are made out of spheroidal graphite cast iron. All other parts are made out of grey
cast iron. Other materials requirements on parts are made on request.
Gear teeth
• Sun and planet gears have spur gear teeth and are made out of CrNiMo case hardened alloy steel.
• Annulus gears are mostly quenched and tempered and shaped or ground, depending on the size.
• Bevel gears are case-hardened and, depending on the size, lapped or ground.
• The gears and gear shafts of the primary gear stages have helical teeth and are case hardened and ground.
The gear teeth are designed with long life, fatigue-resistant according to the stated nominal torques. If the
application factors are correct, then the teeth can be placed theoretically under load as often as required. In cases
of applications, with variable torque and constant speed the gear unit can be designed on the basis of equivalent
torque (Examples given on pages 08 -11). A gear unit design which is finite-life fatigue- resistant is sufficient for
certain applications, for example, sporadic operation (lock-gate drives) or low output speeds i.e (n2 < 4 min -1 ) . We
would be pleased to help you check whether your selection is correct and to calculate the precise service life, so
far as the precise application factors are known.
Bearing arrangements
Gears and shafts are supported by amply dimensioned rolling bearings.
Input side
The shafts are designed to mount couplings or pulleys.
Output side
Hollow and solid shafts with involute splines. Designs are possible
Direction of rotation
The specified directions of rotation refer to output shaft d2 (Viewed from shaft end face)

Seals
Input and output shafts have radial shaft seals as standard. For special applications we provide seals with
refillable labyrinth.

Lubrication / Oil quantities / Mounting position

Lubrication in most instances is by the transfer of oil to the mesh points by gear dipping in the sump of Gear Unit
bottom half. Wherever high pitch line speeds causing detrimental churning of lubricant are encountered, forced
lubrication system is provided for effective spraying of oil to the mesh points. Quantity of oil for normal dip / splash
lubrication is given in the dimension tables. For grade of oil please refer "Guidelines for Selection" sheet.
In case of forced lubrication, extreme ambient temperatures and other specific features, please contact us.
The exact quantity of oil depends on the marks on the oil level monitoring equipment.
All data are subject to change without notice.
Viscosity ISO-VG at 40 °C VG320
Permissible temperature limit in °C for dip lubrication Mineral oil -12
Synthetic oil -25
Permissible temperature limit in °C for circulating forced lubrication Mineral oil +5
at a pump speed of 1500 rpm Synthetic oil -5

The gear units can be operated in any mounting position. Pay attention for further details on page 43.

2
.
Cooling
Up to the limit of thermal capacity (Refer pages 14 - 32) the units are cooled by radiation and convection from the
surface of the housing.
Weights, dimensions
The stated weights are guide values.
Illustrations and dimensions are not strictly binding.
All data are subject to change without notice.
Operating conditions
The ambient temperatures must be known so that they can be taken into consideration when designing for
thermal conditions. Where ambient temperatures are below -10 °C, the factors affecting the oil and the materials
for the gear unit components must be sufficiently taken into consideration. Please contact us. Environmental
conditions such as salt water, salt-laden air, aggressive substances, dust, mud, falling or flying stones, excessive
pressure, heavy vibrations, and extreme shock loads must be made known.
Starting up, maintenance and safety notes
Information given in the operating instructions, in effect at the time is binding.
Delivery
Shanthi- Planetary gear units are supplied ready for installation, given in info below.
The gear housings are protected against corrosion and lacquered. Shaft-mounted gear units are supplied with a
shrink disk as standard, but without a guard.
For gear units supplied with:
• a torque arm on on e side, the coupling rod and t he two self-aligning plain bearings as well as pins,
spacers and circlips are included in the delivery.
• a torque arm on two sides, the Metalastic bushes are included in the delivery.

Preservation
The internal preservation of Shanthi-Planetary gear units depends on the oil used. For gear units with corrosion
prevention, the following storage times are possible:
Standard preservation: up to 6 months
Long-term preservation: up to 24 months (Only if mineral oil or synthetic oil on PAO basis is used)
up to 36 months (Only if synthetic oil on PG basis is used)
If the storage periods mentioned are exceeded, the anti-corrosive agent in the gear unit has to be renewed. The
projecting shaft ends and machined surfaces are also protected against corrosion.
Further notes
For shaft-mounted gear units with torque reaction arm, the connection of the torque reaction arm on the
foundation must permit the gear unit to move corresponding to the displacement of the machine shaft at any time,
without constraining forces acting on the gear unit. In case of foot-mounted gear units with solid shaft the provided
coupling between gear unit and prime mover must also be suitable for movability.
INFORMATION
• The illustrations in the catalogue are example. Final dimension are available from SHANTHI-GEARS on request
• Oil fill quantities are recommended values. Use the marks on the oil dipstick or oil level glass to determine the oil
level.
• The gear units are ready for operation when delivered, but are not filled with oil.
• Oil viscosity and grade must comply with those specified on the nameplate.
• The specified weight data are guide values.
• The buyer must provide protection against unintentional contact with moving parts. The applicable safety
regulations of the country in which the unit will be used are to be followed.

3
3.Symbols & Units

ED = Operating cycle per hour in %, e.g. ED = 80% / h

f1 = Factor for driven machine (table 1)

f2 = Factor for prime mover (table 2)

f3 = Peak torque factor (table 3)

f4 = Thermal factor (table 4)

f14 = Utilization factor (table 5)

FR2 = Permissible radial forces (kN) on shaft D2

i = Actual ratio

iN = Nominal ratio

is = Required ratio

Lh10 = Nominal bearing life (h)

n1 = Input speed (min -1)

n2 = Output speed (min-1 )

n2LN = Reference output speed for standard bearings (min-1)

n2LV = Reference output speed for increased bearing life (min -1)

PG = Required thermal capacity (kW)

PG1 = Thermal capacity (kW) for gear units without auxiliary cooling

PN = Nominal power rating of gear unit (kW), refer rating tables

Preq = Required power rating (kW)

P2 = Power rating of driven machine (kW)

Pstart = Starting power rating (kW)

t = Ambient temperature (°C)

TA = Max. torque on input shaft, e.g. peak operating, starting or braking torque (Nm)

T2N = Nominal output torque (Nm)

T2 = Torque (Nm) of driven machine

Peq = Equivalent power rating (kW)

PI, PII, Pn = Fractions of power rating (kW), obtained from service classification

Teq = Equivalent torque (Nm)

TI, TII, Tn = Fractions of torque (Nm) obtained from service classification

XI, XII, Xn = Fractions of time (%) obtained from service classification

4
4. Guidelines for the selection

4.1 Constant power rating

1. Selection of gear unit type and size

1.1 Calculate the transmission ratio

is = n1/n2

1.2 Find the nominal power rating of the gear unit

PN ≥ Preq = P2 x f1 x f2 ( Refer page 07 for f1, f2 )

1.3 Confirm selection

The selected size is correct if, ( Refer tables for PN )

3.33 x P2 ≥ PN

see calculation example on page 08

1.4 Check for maximum torque condition, e. g. peak operating, starting or braking torque

PN ≥ Pstart = TA X n1 • f 3 (Refer page 07 for f3)

9550

Gear unit size and number of gear stages are given in rating tables depend on iN and PN

1.5 Please cross check if i as per tables on pages 37,38 and 39 is acceptable.

2. Calculate the required thermal capacity PG

2.1 Gear unit utilization

Utilization % = P2 / PN x 100

The factor f14 can be obtained from table 5, on page 07, relative to the percentage utilization

2.2 Gear units without auxiliary cooling,

If P2 ≤ PG = PG1 x f4 x f14 then no auxiliary cooling is needed.

2.3 External air cooler or water cooler can be supplied on request if higher thermal capacity are needed.

5
Guidelines for the selection

4.2 Variable power rating

If driven machines run with constant speeds and variable ratings, then the gear units can be
designed according to the equivalent power rating.
For this, a working cycle where phases I, II…n require power PI, PII…Pn and the respective
power ratings operate for time fractions XI, XII…Xn is taken as a basis.
The equivalent power rating can be calculated for these specifications with the following formula:

6.6
6.6 6.6 6.6
P2eq = PI x XI + PII x XII + … Pn x Xn
100 100 100

The size of the gear unit can be decided as given for constant power rating (Refer page 05)
Peq has to be taken as P2
PN ≥ Preq = Pequx f1 x f2

When PN is selected, the power and time fractions must be checked as follows

* The individual power fractions PI, PII…Pn must be greater than 0.4 x PN
* The individual power fractions PI, PII...Pn must be less than 1.4 x PN
* If power fractions PI, PII…Pn are greater than PN, the sum of time fractions XI, XII…Xn must not
exceed 10%. If any one of the above condition is not met, then Preq and Peq must be recalculated.
The peak power rating Pmax is not considered while calculating P2eq but has to equal to 2•PN

6
Service Factors for different applications
Load Classification Symbols
Table 1 Factor for driven machine f1
Effective daily Effective daily Effective daily
operating period operating period operating period
under load under load under load
Driven machines in hours Driven machines in hours Driven machines in hours

> 0.5 > 0.5 > 0.5‐

≤ 0.5 ‐ 10 > 10 ≤ 0.5 ‐ 10 > 10 ≤ 0.5 10 > 10
Waste water treatment Metal working mills Cranes **
Thickeners (central drive) ‐ ‐ 1.2 Plate tilters 1.0 1.0 1.2 Slewing gears **** 1.0 1.4 1.8
Filter presses 1.0 1.3 1.5 Ingot pushers 1.0 1.2 1.2 Luffing gears 1.0 1.1 1.4
Flocculation apparatus 0.8 1.0 1.3 Winding machines ‐ 1.6 1.6 Travelling gears 1.1 1.6 2.0
Aerators ‐ 1.8 2.0 Cooling bed transfer frames ‐ 1.5 1.5 Hoisting gears 1.0 1.1 1.4
Raking equipment 1.0 1.2 1.3 Roller straighteners ‐ 1.6 1.6 Derricking jib cranes 1.0 1.2 1.6
Combined longitudinal Roller tables Cooling towers
and rotary rakes 1.0 1.3 1.5 continuous ‐ 1.5 1.5 Cooling tower fans ‐ ‐ 2.0
Pre‐thickeners ‐ 1.1 1.3 intermittent ‐ 2.0 2.0 Blowers (axial and radial) ‐ 1.4 1.5
Screw pumps ‐ 1.3 1.5 Reversing tube mills ‐ 1.8 1.8 Food industry
Water turbines ‐ ‐ 2.0 Shears Cane sugar production
Pumps continuous * ‐ 1.5 1.5 Cane knives * ‐ ‐ 1.7
Centrifugal pumps 1.0 1.2 1.3 crank type * 1.0 1.0 1.0 Cane mills ‐ ‐ 1.7
Positive‐displacement pumps Continuous casting drivers * ‐ 1.4 1.4 Beet sugar production ‐ ‐
For 1 piston 1.3 1.4 1.8 Rolls Beet cossettes macerators, ‐ ‐ 1.2
> 1piston 1.2 1.4 1.5 Reversing blooming mills ‐ 2.5 2.5 Extraction plants, Mechanical
Dredgers Reversing slabbing mills ‐ 2.5 2.5 refrigerators, Juice boilers. ‐ ‐ 1.4
Bucket conveyors ‐ 1.6 1.6 Reversing wire mills ‐ 1.8 1.8 Sugar beet washing machines,
Dumping devices ‐ 1.3 1.5 Reversing sheet mills ‐ 2.0 2.0 Sugar beet cutters ‐ ‐ 1.5
Carterpillar travelling gears 1.2 1.6 1.8 Reversing plate mills ‐ 1.8 1.8 Paper machines
Bucket wheel excavators Roll adjustment drives 0.9 1.0 ‐ of all kind *** ‐ 1.8 2.0
as pick‐up ‐ 1.7 1.7 Pulper drives on request
Plate bending machines * ‐ 1.0 1.0
for primitive material ‐ 2.2 2.2 Chemical industry
Cutter heads ‐ 2.2 2.2 Conveyors Extruders ‐ ‐ 1.6
Traversing gears * ‐ 1.4 1.8 Bucket conveyors ‐ 1.2 1.5 Dough mills ‐ 1.8 1.8
Cableways Hauling winches 1.4 1.6 1.6 Rubber calenders ‐ 1.5 1.5
Material ropeways ‐ 1.3 1.4 Hoists ‐ 1.5 1.8 Cooling drums ‐ 1.3 1.4
To‐ and fro system Belt conveyors ≤ 150 kW 1.0 1.2 1.3 Mixers for
Aerial ropeways ‐ 1.6 1.8 Belt conveyors ≥150 kW 1.1 1.3 1.4 uniform media 1.0 1.3 1.4
T‐bar lifts ‐ 1.3 1.4 Goods lifts * ‐ 1.2 1.5 non‐uniform media 1.4 1.6 1.7
Continuous ropeways ‐ 1.4 1.6 Passenger lifts * ‐ 1.5 1.8 Agitators for media with ‐ ‐ ‐
Cement industry Apron conveyors ‐ 1.2 1.5 uniform density 1.0 1.3 1.5
Concrete mixers ‐ 1.5 1.5 Escalators ‐ 1.2 1.4 non‐uniform density 1.2 1.4 1.6
Breakers * ‐ 1.2 1.4 Rail travelling gears ‐ 1.5 ‐ non‐uniform gas absorption 1.4 1.6 1.8
Rotary kilns ‐ ‐ 2.0 Toasters 1.0 1.3 1.5
Frequency converters ‐ 1.8 2.0
Tube mills ‐ ‐ 2.0 Centrifuges 1.0 1.2 1.3
Separators ‐ 1.6 1.6
Reciprocating compressors ‐ 1.8 1.9 Centrifugal compressors ‐ 1.4 1.5
Roll crushers ‐ ‐ 2.0

Table 2 Factor for prime mover f2 Table 3 Peak torque factor f3 Table 4 Thermal factor f4
Electric motors, hydraulic motors, turbines 1.0 Load peaks per hour Without auxiliary cooling
Piston engines 4 ‐ 6 cylinders 1‐5 6‐30 31‐100 >100 Ambient Operating cycle per hour (ED) in %
cyclic variation 1.25 Steady direction of load 0.5 0.65 0.7 0.85 temperature 100 80 60 40 20
1 : 100 to 1 : 200 Altemating direction of load 0.7 0.95 1.1 1.25 10 °C 1.14 1.20 1.32 1.54 2.04
Piston engines 1 ‐ 3 cylinders Table 5 Utilization factor f14 20 °C 1.00 1.06 1.16 1.35 1.79
cyclic variation 1.50 30% 40% 50% 60% 70% 80% 90% 100% 30 °C 0.87 0.93 1.00 1.18 1.56
up to 1 : 100 0.66 0.77 0.83 0.90 0.90 0.95 1.00 1.00 40 °C 0.71 0.75 0.82 0.96 1.27
50 °C 0.55 0.58 0.64 0.74 0.98

Design for power rating of driven machine P2

*) Designed power corresponding to max. torque
**) Load can be exactly classified, for instance, according to FEM 1001
***) A check for thermal capacity is absolutely essentia
****) Load can be exactly classified according to the slewing gear specification
The listed factors are reference values. The factors given for applications
is accepted for design & load conditions. If deviations are there from
standard conditions, please refer to us.

For other driven machines which are not listed in this table, please refer to us

7
4.4 Selection Examples
4.4.1 Calculation 1
Known parameters:

Prime mover
Electric motor: P1 = 30 kW
Motor speed: n1 = 1500 min-1
Max. Starting torque: TA = 280 Nm

Driven machine
Agitator: P2 = 25 kW
Speed: n2 = 13.4 min-1
Duty: 24 h / day
Starts per hour: 1
Operating cycle per hour: ED = 100%
Ambient temperature: 40°C
Installation in a large hall

1. Selection of gear unit type

1.1 Requried transmission ratio

n1 1500min⁻¹
is = = = 111.9 iN = 112
n2 13.4min⁻¹
The nominal ratio (Refer page 37 for SP2HN) is chosen.

1.2 Determination of gear unit size

Nominal power rating of the gear unit

PN ≥ Preq = P2 x f1 x f2 = 25kW x 1.5 x 1 = 37.5kW PN = 42kW > Preq = 37.5kW

(Refer page 20 for SP2HN – Size 17)

1.3 Size confirmation

3.33 x P2 ≥ PN 3.33 x 25kW = 83.25kW > PN = 42kW (Gearbox selection is ok)

1.4 Check for max.torque condition

TA x n1 280Nm x 1500 min⁻¹

PN ≥ Pstart = x f3 = X 0.5 = 22kW PN = 42kW > Pstart= 22kW
9550 9550
(f3 =0.5 for Agitator refer page 07 table 3)
2. Determination of thermal capacity

2.1 Gear unit utilization

P2 25 kW
Utilization % = x 100 = x 100 = 59.5%
PN 42kW

f 14 = 0.9 (Refer page 07 table 5)

2.2 Thermal capacity according to table for type SP2HN17, (Refer page 20)

P2 ≤ PG = PG1 x f4 x f14 = 33kW x 0.71 x 0.9 = 21.1kW P2 = 25kW > PG = 21.1kW

(Auxiliary cooling required, Please refer to us)

3. Determination of the design Helical Planetary gear unit:SP2HN17 (Refer page 19)
Mounting position: Horizontal
Position of the input shaft : H03 (Refer page 43)
Direction of rotation of output shaft : ccw, viewing from shaft end face
Output shaft : Solid shaft with foot

8
4.4.2 Calculation 2
Known parameters:
Prime mover
Electric motor: P1 = 30kW
Motor speed: n1 = 1500 min⁻¹
Max. starting torque: TA = 420Nm
Driven machine
Apron conveyor: T2 = 150000Nm
Speed: n2 = 3.25 min⁻¹
Duty: 24 h/day
Starts per hour: 7
Operating cycle per hour: ED = 100%
Ambient temperature: 30°C
Installation in the open

1. Selection of gear unit type

1.1 Required transmission ratio
n1 1500min⁻¹
is = = =461.5 iN = 450
n2 3.25min⁻¹
The nominal ratio (Refer page 39 for SP2HBD) is chosen.

1.2 Determination of gear unit size

Power rating of driven machine
T2 x n2 150000 Nm x 3.25 min⁻¹
P2 = = = 51.04 kW
9550 9550

Nominal power rating of the gear unit

PN ≥ Preq =PN ≥ P2 x f1 x f2 = 51.04kW x 1.5 x 1 = 76.57kW PN = 85.5kW > Preq = 76.57kW

(Refer page 34 for SP2HBD – Size 24)

1.3 Size confirmation

3.33 x P2 ≥ PN 3.33 x 51.04kW = 169.96kW > PN = 85.5kW (Gearbox selection is ok)

1.4 Check for max.torque condition

TA x n1 420Nm x 1500 min⁻¹

PN ≥ Pstart = x f3 = x 0.65 = 65.9kW PN = 85.5kW > Pstart= 65.9kW
9550 9550
(f3= 0.65 for Apron conveyor refer page 07, table 3)

2. Determination of thermal capacity

2.1 Gear unit utilization

P2 51.04 kW
Utilization % = x 100 = x 100 = 59.7%
PN 85.5kW
f14 = 0.9 (Refer page 07, table 5)

2.2 Thermal capacity according to table for type SP2HBD24, (Refer page 34)

P2 ≤ PG = PG1 x f4 x f14 = 110kW x 0.87 x 0.9 = 86.13kW P2 = 51.83kW < PG = 86.13kW

(No Auxiliary cooling required)

3. Determination of the design Bevel-helical planetary gear unit, SP2HBD 24 (Refer page 33)
Mounting position: Horizontal
Position of the input shaft : B03 (Refer page 43)
Direction of rotation of output shaft : ccw, viewing from shaft end face
Output shaft : Hollow shaft with shrink disc

9
4.4.3 Calculation 3

Known parameters:
Prime mover
Electric motor: P1 = 130 kW
Motor speed: n1 = 1000 min⁻¹
Max. Starting torque: TA = 2000Nm
Driven machine
Mixer, uniform media
Speed: n2 = 12.5 min⁻¹
Duty: 12 h/day
Operating cycle per hour: ED = 60%
Ambient temperature: 20°C
Installation in the open
Service classification
TI 47 000 Nm with time fraction of 20%
TII 50 000 Nm with time fraction of 40%
TIII 53 000 Nm with time fraction of 30%
TIV 100 000 Nm with time fraction of 10%

1. Selection of gear unit type

1.1 Required transmission ratio

n1 1000min⁻¹
is = = = 80 iN = 80
n2 12.5min⁻¹

The nominal ratio (Refer page 37 for SP2HND) is chosen.

1.2 Determination of gear unit size

Determination of equivalent torque from the given service classification

6.6
T2eq =
TI6.6 x XI + TII6.6 x XII +… Tn6.6 x Xn
100 100 100

6.6
T2eq =
470006.6Nm x 20% + 500006.6Nm x 40% + 530006.6Nm x 30% + 1000006.6Nm x 10%
100 100 100 100

= 71578 Nm

Observe conditions1), 2), 3), of the guidelines for the selection, (Refer page 06)

Power rating of driven machine

T2 x n2 71578 Nm x 12.5 min⁻¹
P2 = = = 93.6 kW
9550 9550

Nominal power rating of gear unit

PN ≥ Preq = P2 x f1 x f2 = 93.6kW x 1.4 x 1 = 131kW PN = 144kW > Preq = 131kW

(Refer page 18 for SP2HND – Size 21)

1.3 Size confirmation

3.33 x P2 ≥ PN 3.33 x 93.6kW = 311.7kW > PN = 144kW (Gearbox selection is ok)

1.4 Check for max.torque condition

TA x n1 2000Nm x 1000 min⁻¹

PN ≥ Pstart = x f3 = x 0.5 = 105kW PN = 153kW > Pstart= 105kW
9550 9550
(f3=0.5 for Mixer refer page 07, table 3)

10
2. Determination of thermal capacity

2.1 Gear unit utilization

P2 93.6 kW
Utilization % = x 100 = x 100 = 65%
PN 144kW
f14= 0.9 (Refer page 07, table 5)

2.2 Thermal capacity according to table for type SP2HND21, (Refer page 18)

P2 ≤ PG = PG1 x f4 x f14 = 98kW x 1.16 x 0.9 = 102.31kW P2 = 93.6kW < PG = 102.3kW

(No Auxiliary cooling required)

3. Determination of the design Bevel-helical planetary gear unit, SP2HND21 (Refer page 17)

Mounting position: Horizontal

Position of the input shaft : H03 (Refer page 43)

Direction of rotation of output shaft : in both directions

Output shaft : Hollow shaft with shrink disc

11
12
5.1 SP2NND
l1 K1 K2
Shrink disk
t c
Shaft end of driven machine

3)
ØIT6
d1

3.2 3.2

d2
D

d5
d7

d6
l3x45 l3x45
l2 l2
l4

s
d2 d3
d4 No D weight oil
Size T2N d1 l1 h6 h6
l2 l3 l4 t d6 h7 d7 K1 K2 d5 c s
1) 4) 4) 5) 2)
[Nm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [Kg] [Lts]
[mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm]

11 4000 35 60 75 70 40 2.5 42.5 20 280 226 234 245 100 255 6 11 18 170
12 5600 40 60 80 75 45 2.5 47.5 20 310 252 260 270 110 285 6 13.5 18 185
13 7250 40 70 90 85 48 2.5 50.5 20 330 268 276 295 120 300 6 13.5 20 197
14 11000 45 80 100 95 55 2.5 57.5 20 365 300 310 325 130 335 6 13.5 24 230
15 15500 45 80 110 105 60 2.5 57.5 22 415 342 354 380 145 380 6 18 20 263 180 5
16 22000 50 80 120 115 60 2.5 62.5 24 445 378 375 460 160 410 6 18 24 263 230 7
17 30000 55 90 130 125 70 2.5 72.5 28 500 428 442 480 175 465 6 18 28 290 245 9
18 42000 60 105 150 145 80 2.5 82.5 32 550 464 480 520 200 510 6 22 20 340 375 11
19 60000 70 120 160 155 90 2.5 92.5 34 625 518 535 570 210 575 8 26 20 370 440 15
20 82000 80 140 180 175 95 2.5 97.5 38 705 600 615 620 220 655 8 26 24 405 680 20
21 110000 80 140 200 195 105 2.5 107.5 42 785 678 700 675 250 735 8 26 32 430 1010 26
22 145000 90 160 220 215 110 2.5 112.5 44 825 720 740 760 270 775 8 26 36 460 1200 34
23 190000 95 160 240 235 120 2.5 122.5 48 850 735 755 810 290 800 8 26 36 485 1365 43
24 245000 110 180 260 255 120 2.5 122.5 50 980 846 868 905 315 915 10 33 32 570 1960 55
25 310000 110 180 290 275 135 2.5 137.5 56 1065 930 955 960 340 1000 10 33 36 590 2630 70
26 380000 120 210 310 305 152 2.5 154.5 62 1130 976 1004 1025 365 1055 12 39 32 650 2980 90
27 455000 120 210 330 325 152 2.5 154.5 64 1170 1010 1036 1070 385 1090 12 39 32 670 3400 110
28 520000 130 210 350 345 164 2.5 166.5 68 1220 1068 1096 1140 400 1145 14 39 36 710 3650 130
29 590000 130 210 360 355 164 2.5 166.5 68 1260 1112 1142 1170 415 1185 16 39 36 750 4450 155
30 660000 140 240 380 375 180 2.5 182.5 72 1340 1162 1194 1220 425 1255 18 45 36 770 4950 180
31 750000 140 240 400 395 190 2.5 192.5 74 1380 1202 1235 1275 455 1295 20 45 36 820 5630 205
32 845000 150 240 430 425 200 2.5 202.5 80 1490 1272 1308 1350 475 1385 22 52 32 845 6400 235
33 940000 150 240 450 445 210 2.5 212.5 82 1530 1325 1362 1390 485 1430 22 52 32 885 7520 260
34 1040000 160 270 460 450 220 5 225 84 1570 1360 1396 1430 500 1465 22 52 36 885 8100 290
upto
35-38 On request
1540000

1) Shaft diameter d1 ≤ 100 tolerance m6

Shaft diameter d1 > 100 tolerance n6
2) Weight without shrink disk and oil
3) For shaft end d1 with parallel key acc.to DIN 6885/1 and centre hole acc to DIN 332
4) > 160 g6
5) For bore patterns, (Refer page 42)

13
5.1 SP2NND Ratio iN, Speed n1N and n2N, Nominal power ratings PN

Gear unit sizes 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

n1 n2 Nominal Power rating PN in kW

iN
[rpm] [rpm]

1500 60 25 35 46 69 97 138 188 264 377 515 691 911 1194 1539 1948

25 1000 40 17 23 30 46 65 92 126 176 251 343 461 607 796 1026 1298 1592 1906 2178 2471 2765 3142 3539 3937 4356

750 30 13 18 23 35 49 69 94 132 188 258 346 456 597 770 974 1194 1429 1634 1853 2073 2356 2655 2953 3267

1500 54 23 32 41 62 88 124 170 237 339 464 622 820 1074 1385 1753

28 1000 36 15 21 27 41 58 83 113 158 226 309 415 547 716 924 1169 1433 1715 1960 2224 2488 2827 3185 3544 3921

750 27 11 16 20 31 44 62 85 119 170 232 311 410 537 693 876 1074 1286 1470 1668 1866 2121 2389 2658 2940

1500 48 20 28 36 55 78 111 151 211 302 412 553 729 955 1231 1558 1910 2287 2614 2966 3317 3770 4247 4725 5227

31.5 1000 32 13 19 24 37 52 74 101 141 201 275 369 486 637 821 1039 1273 1525 1742 1977 2212 2513 2832 3150 3485

750 24 10 14 18 28 39 55 75 106 151 206 276 364 478 616 779 955 1144 1307 1483 1659 1885 2124 2362 2614

1500 42 18 25 32 48 68 97 132 185 264 361 484 638 836 1078 1363 1671 2001 2287 2595 2903 3299 3716 4134 4574

35.5 1000 28 12 16 21 32 45 65 88 123 176 240 323 425 557 718 909 1114 1334 1525 1730 1935 2199 2478 2756 3049

750 21 9 12 16 24 34 48 66 92 132 180 242 319 418 539 682 836 1001 1144 1297 1451 1649 1858 2067 2287

1500 38 16 22 29 44 62 88 119 167 239 326 438 577 756 975 1234 1512 1811 2069 2348 2626 2984 3362 3740 4138

40 1000 25 10 15 19 29 41 58 79 110 157 215 288 380 497 641 812 995 1191 1361 1545 1728 1963 2212 2461 2723

750 19 8 11 14 22 31 44 60 84 119 163 219 288 378 487 617 756 905 1035 1174 1313 1492 1681 1870 2069

Thermal capacities PG1 in kW *

Gear unit sizes 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

1) PG1 for small

20 26 31 37 45 56 69 82 89 114 133 150 162 181 194 211 229 256 274 289
confined spaces

2) PG1 for large halls,

28 36 44 52 63 78 98 116 126 161 188 211 228 256 274 297 324 361 387 408
workshops etc.

3) PG1 in the open 37 49 58 69 84 104 130 154 168 214 251 281 304 341 365 396 431 481 515 544

*) Values apply to horizontal mounting position. For other mounting positions please refer to us
1) Wind velocity ≥ 0.5 m/s
2) Wind velocity ≥ 1.4 m/s
3) Wind velocity ≥ 3.7m/s

14
5.2 SP2NNS
l1 K1 K2 l2
t c

3)
3)
d1

d5 4)
d7

d2
d4

d6
s
d1 d4 No 2)
Size T2N l1 d2 l2 t d6 d7 K1 K2 d5 c s oil
1) h7 4) weight
[Nm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [Kg] [Lts]

11 4000 35 60 75 120 20 280 226 234 245 30 255 6 11 18

12 5600 40 60 80 140 20 310 252 260 270 45 285 6 13.5 18

13 7250 40 70 90 160 20 330 268 276 295 50 300 6 13.5 20

14 11000 45 80 100 180 20 365 300 310 325 55 335 6 13.5 24

15 15500 45 80 110 180 22 415 342 354 380 65 380 6 18 20 195 5

16 22000 50 80 120 210 24 445 378 375 460 70 410 6 18 24 250 7

17 30000 55 90 130 210 28 500 428 442 480 80 465 6 18 28 335 9

18 42000 60 105 150 240 32 550 464 480 520 95 510 6 22 20 400 11

19 60000 70 120 160 270 34 625 518 535 570 110 575 8 26 20 490 15

20 82000 80 140 180 310 38 705 600 615 620 120 655 8 26 24 750 20

21 110000 80 140 200 310 42 785 678 700 675 130 735 8 26 32 1110 26

22 145000 90 160 220 350 44 825 720 740 760 140 775 8 26 36 1320 34

23 190000 95 160 240 400 48 850 735 755 810 150 800 8 26 36 1500 43

24 245000 110 180 260 400 50 980 846 868 905 160 915 10 33 32 2150 55

25 310000 110 180 290 450 56 1065 930 955 960 170 1000 10 33 36 2890 70

26 380000 120 210 310 500 62 1130 976 1004 1025 180 1055 12 39 32 3270 90

27 455000 120 210 330 500 64 1170 1010 1036 1070 190 1090 12 39 32 3630 110

28 520000 130 210 350 550 68 1220 1068 1096 1140 200 1145 14 39 36 3920 130

29 590000 130 210 360 590 68 1260 1112 1142 1170 210 1185 16 39 36 4750 155

30 660000 140 240 380 590 72 1340 1162 1194 1220 215 1255 18 45 36 5300 180

31 750000 140 240 400 650 74 1380 1202 1235 1275 225 1295 20 45 36 6020 205

32 845000 150 240 430 690 80 1490 1272 1308 1350 230 1385 22 52 32 6860 235

33 940000 150 240 450 750 82 1530 1325 1362 1390 240 1430 22 52 32 8030 260
34 1040000 160 270 460 750 84 1570 1360 1396 1430 250 1465 22 52 36 8660 290
upto
35-38 On request
1540000

1) Shaft diameter d1 ≤ 100 tolerance m6

Shaft diameter d1 > 100 tolerance n6
2) Weight without oil
3) For shaft end d1, d2 with parallel key acc.to DIN 6885/1 and centre hole acc to DIN 332
4) For bore patterns, (Refer page 42).

15
5.2 SP2NNS Ratio iN, Speed n1N and n2N, Nominal power ratings PN

Gear unit sizes 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

iN n1 n2 Nominal Power rating PN in kW

[rpm] [rpm]