11 - gearheads and speed reducers i · 5:1 7:1 10:1 16:1 20:1 25:1 28:1 35:1 40:1 50:1 70:1 100:1...

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PHONE: 516.328.3300 • FAX: 516.326.8827 • WWW.SDP-SI.COM

Metric

0 10

11-1D815

©Copyright 2019 Stock Drive Products / Sterling Instrument, a Designatronics company. All rights reserved.

11 - GEARHEADS AND SPEED REDUCERS

PRX Planetary Gearheads Size 60pg. 11-5

S9160AMPRX...

RTX Planetary Gearheads Size 90pg. 11-8

S9160AMRTX...

Technical Data:Planetary Gearhead Types - pg. 11-2Planetary Gear Systems - pg. 11-3PRX and RTX Planetary Gearheads - pg. 11-4Gearhead to Motor Mounting Information - pg. 11-9

RTX Planetary Gearheads Size 60pg. 11-6

S9160AMRTX...

PRX Planetary Gearheads Size 90pg. 11-7

S9160AMPRX...

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Metric

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11-2D815


PLANETARY GEARHEAD TYPES

How to choose the type of gearhead depends primarily on the application. Some of the factors to be considered to make proper trade-offs between cost and performance are shown below. The hybrid design of planetary and spur gears are not offered by us but are available on the market, and are included for comparison purposes.

Planetary Low CostPlanetary Spur Hybrid

Torque Capacity

Load Sharing

Power to Weight Ratio

Power to Size Ratio

Torsional Stiffness

Backlash

Cost

Available Number of Gear

Ratios

High

Yes

High

High

High

Low6-10 minutes

High

Low

Medium Low

Yes

Medium

Medium

Medium

Medium7-14 minutes

Medium

Low

No

Low

Low

Low

High30 min. max.

Low

High

Planetary Section Only

Medium

Medium

Medium

Medium

Medium

GEARHEAD TYPEDESIGN

FACTORS

Medium

Mediumlimited by spur gear

pair strength

TRUE PLANETARY SPUR GEAR HYBRID

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Metric

0 10

11-3D815


PLANETARY GEAR SYSTEM

Planet Gear B, zb

Sun Gear A, za

Carrier D

Internal Gear C, zc

Planetary Gear System

The basic form of planetary gear system is shown above. It consists of a sun gear A, planetary gears B, internal gear C and carrier D. In our gearheads the internal gear is fixed, the sun gear is the input pinion, and the output shaft is part of the carrier.

This relationship can be represented schematicallyas shown on the right. The speed ratio is given by the equation:

za 1+ –– zc za + zc zcGear Ratio = –––––– = –––––– = –– + 1 za za za –– zc

where: za = number of teeth in sun gear A, and zc = number of teeth in internal gear C.

A

BC (Fixed)

D

For the example shown in the above illustration (where za = 14, zb = 18 and zc = 50), the Gear Ratio is 4.6:1.

For a double-stage planetary gearhead, the carrier of the first stage becomes the sun gear of the second stage.

The advantages of the planetary gearheads are: 1. The input and output axes are in the same line. 2. The planet gears used in a planetary system share the

load, allowing for a much higher torque capacity unit than the comparable size spur gearheads.

3. The unit is compact and inertially balanced.

The disadvantages are: 1. The mechanism is complex. 2. The components require high-precision manufacturing. 3. The cost is considerably more than comparable size spur

gearheads.

USEFUL FORMULAS

The maximum output (Maximum continuous torque) x (Maximum rated output rpm)HP of Gearhead 63025

The maximum allowable The maximum output HP of gearhead output HP of the motor 0.90 (single stage) or 0.85 (double stage)

Effective inertia load inertia gearhead∆ pinion∆ (gear ratio)2 inertia inertia For very fast response, the effective inertia should be one to three times larger than the motor inertia (including the pinion).

For acceptably fast response, the effective inertia should be less than ten times larger than the motor inertia (including the pinion).

∆ Inertia values shown in this catalog include both the gearhead and pinion values.

=

=

+ +=

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Metric

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11-4D815


NEMA Inch: 23 & 34 & Metric: 60 & 90Radial and Axial Output Shaft Loading Specifications

PRX TYPE (HEAVY-DUTY)

800700600500400300200100

0 0.20.508 1.016 1.524 2.032 2.54 3.048 3.556

362.9317.5272.2226.8181.4136.190.72

0.4 0.6 0.8 1.0 1.2 1.4

45.36

023/060 PRX Bearing Radial Load Limits

Radi

al L

oad

(lbf)

Load Distance From Mount Face (in.)(cm)

18001600140012001000800600400200

0

816.5725.7635544.3453.6362.9272.2181.490.72

034/090 PRX Bearing Radial Load Limits

Radi

al L

oad

(lbf)

0.20.508 1.016 1.524 2.032 2.54 3.048 3.556

0.4 0.6 0.8 1.0 1.2 1.4


300

250

150

100

50

0

200

136.1

113.4

90.72

45.36

68.04

22.68

023/060 RTX Bearing Radial Load Limits

Radi

al L

oad

(lbf)

0.20.508 1.016 1.524 2.032 2.54 3.048 3.556

0.4 0.6 0.8 1.0 1.2 1.4


362.9317.5272.2226.8181.4136.190.7245.36

034/090 RTX Bearing Radial Load Limits

Radi

al L

oad

(lbf)

0.20.508 1.016 1.524 2.032 2.54 3.048 3.556

0.4 0.6 0.8 1.0 1.2 1.4


800700600500400300200100

0

kgf

kgf

kgf

kgf

KEY50 rpm125 rpm250 rpm500 rpm1000 rpm2000 rpm

The graphs display allowable radial load at a given distance from the gearhead face based on an L10 bearing life of;20,000 hours (PRX),15,000 hours (RTX)

RTX TYPE (STANDARD-DUTY)

PRX & RTX PLANETARY GEARHEADS

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Metric

0 10

11-5D815


PRECISION SERIESSINGLE & DOUBLE STAGE

MATERIAL: Housing - Stainless Steel Mounting Flanges - Red Anodized Aluminum (Front) Aluminum (Back) Output Shafts - Stainless Steel Gears - Alloy and Stainless Steel Bearings - Ball and Angular Contact Bearings

FEATURES:Standard METRIC SizesHigh Torque Design with Optimized Gear GeometryHigh Torsional Stiffness Sealed to extend service lifeCaptive, Bearing supported input pinionSimplified quick installationSingle-piece constructionAlloy Steel key is supplied

SPECIFICATIONS: Max. Input Speed: 6500 rpm Shaft Loading: Axial: 226.8 kgf Value shown is for loads into the gearhead face. For loads away from the face, reduce by 50% Radial: See graph on page: 11-4 Min. Efficiency: Single Stage: 95% Double Stage: 90% Backlash: Single Stage: 4 arc min. Double Stage: 6 arc min. Operating Temperature: -40°C to +121°C Weight: Single Stage: 1.27 kg Double Stage: 1.72 kg Torsional Stiffness: 23.04 kgf cm/arc min.

Catalog Number

METRIC COMPONENT

GearRatio

LMax.

Max. RatedContinuous

TorqueN • m

Max.Momentary

TorqueN • m

Max.StoppingTorque

N • m

GearheadMoment

of Inertia*kg • m2

S9160AMPRX004S9160AMPRX005S9160AMPRX007S9160AMPRX010S9160AMPRX016S9160AMPRX020S9160AMPRX025S9160AMPRX028S9160AMPRX035S9160AMPRX040S9160AMPRX050S9160AMPRX070S9160AMPRX100

4:15:17:1

10:116:120:125:128:135:140:150:170:1

100:1

60513624 60

51605160514127

48412819 48

41484148413222

12111810981

121

11812111812111810981

1.5578 x 10-5

1.3369 x 10-5

1.1765 x 10-5

1.0945 x 10-5

1.3085 x 10-5

1.1800 x 10-5

1.1715 x 10-5

1.0952 x 10-5

1.0910 x 10-5

1.0543 x 10-5

1.0522 x 10-5

1.0508 x 10-5

1.0501 x 10-5

82SingleStage

111DoubleStage

80 0-0.051

Ø116

2.525

9.5L

90SQUARE

403

Ø6.6 (4 HOLES)EQ. SP. ON A

Ø100 B.C.

6 0-0.030

Ø22 0-0.0127

* Values shown include pinion, clamp and sleeve and are for standard METRIC mountings. Efficiency rated at 3000 rpminput speed, at nominal rated torque. All torque ratings are based upon 3000 rpm nominal input speed and 20,000 hoursminimum service life.

PRX PLANETARY GEARHEADS • SIZE 60

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Metric

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11-6D815


RTX PLANETARY GEARHEADS • SIZE 60

PRECISION SERIESSINGLE, DOUBLE & TRIPLE STAGE MATERIAL: Housing - Stainless Steel Mounting Flanges - Red Anodized Aluminum (Front) Aluminum (Back) Output Shafts - Stainless Steel Gears - Alloy and Stainless Steel Bearings - Ball Bearings

FEATURES: Standard METRIC Sizes High Torque Design with Optimized Gear Geometry High Torsional Stiffness Sealed to extend service life Captive, Bearing supported input pinion Simplified quick installation Single-piece construction Alloy Steel key is supplied

SPECIFICATIONS: Max. Input Speed: 6500 rpm Shaft Loading: Axial: 158.75 kgf Value shown is for loads into the gearhead face. For loads away from the face, reduce by 50% Radial: See graph on page: 11-4 Min. Efficiency: Single Stage: 95% Double Stage: 90% Triple Stage: 85% Backlash: Single Stage: 4 arc min. Double Stage: 6 arc min. Triple Stage: 8 arc min. Operating Temperature: -40°C to +121°C Weight: Single Stage: 1.49 kg Double Stage: 1.77 kg Triple Stage: 2.13 kg Torsional Stiffness: 17.28 kgf-cm/arc min.

Catalog Number

METRIC COMPONENT

GearRatio

LMax.


TorqueN • m

Max.Momentary

TorqueN • m

Max. StoppingTorque

N • m

GearheadMoment


S9160AMRTX004S9160AMRTX005S9160AMRTX007S9160AMRTX010S9160AMRTX016S9160AMRTX020S9160AMRTX025S9160AMRTX028S9160AMRTX035S9160AMRTX040S9160AMRTX050S9160AMRTX070S9160AMRTX100S9160AMRTX160S9160AMRTX280S9160AMRTX400S9160AMRTX500S9160AMRTX700

4:15:17:1

10:116:120:125:128:135:140:150:170:1

100:1160:1280:1400:1500:1700:1

45382617 45

38453845383020

45

3830

53453222 53

45534553453625

53

4536

1071059781

107

1051071051071059781

107

10597

1.3191 x 10-5

1.1863 x 10-5

1.0861 x 10-5

1.0345 x 10-5

1.2019 x 10-5

1.1122 x 10-5

1.1065 x 10-5

1.0486 x 10-5

1.0458 x 10-5

1.0162 x 10-5

1.0147 x 10-5

1.0140 x 10-5

1.0133 x 10-5

1.0147 x 10-5

1.0133 x 10-5

1.0133 x 10-5

1.0133 x 10-5

1.0133 x 10-5

86SingleStage

131TripleStage

108DoubleStage

50 0 -0.05

Ø80

220

6.4L

60SQUARE

303


Ø70 B.C.

5 0-0.030

Ø16 0-0.0127

* Values shown include pinion, clamp and sleeve and are for standard METRIC mountings. Efficiency rated at 3000 rpm input speed, at nominal rated torque. All torque ratings are based upon 3000 rpm nominal input speed and 15,000 hours minimum service life.

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Metric

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11-7D815


PRECISION SERIESSINGLE & DOUBLE STAGE

MATERIAL: Housing - Stainless SteelMounting Flanges - Red Anodized Aluminum (Front) Aluminum (Back)Output Shafts - Stainless Steel Gears - Alloy and Stainless SteelBearings - Ball and Angular Contact Bearings

FEATURES:Standard METRIC SizesHigh Torque Design with Optimized Gear GeometryHigh Torsional Stiffness Sealed to extend service lifeCaptive, Bearing supported input pinionSimplified quick installationSingle-piece constructionAlloy Steel key is supplied

SPECIFICATIONS: Max. Input Speed: 6500 rpm Shaft Loading: Axial: 340.2 kgf Value shown is for loads into the gearhead face. For loads away from the face, reduce by 50% Radial: See graph on page: 11-4 Min. Efficiency: Single Stage: 95% Double Stage: 90% Backlash: Single Stage: 4 arc min. Double Stage: 6 arc min. Operating Temperature: -40°C to +121°C Weight: Single Stage: 4.13 kg Double Stage: 5.76 kg Torsional Stiffness: 92.17 kgf-cm/arc min.

Catalog Number

METRIC COMPONENT

GearRatio

LMax.


TorqueN • m

Max.Momentary

TorqueN • m

Max. StoppingTorque

N • m

GearheadMoment


S9190AMPRX004S9190AMPRX005S9190AMPRX007S9190AMPRX010S9190AMPRX016S9190AMPRX020S9190AMPRX025S9190AMPRX028S9190AMPRX035S9190AMPRX040S9190AMPRX050S9190AMPRX070S9190AMPRX100

4:15:17:1

10:116:120:125:128:135:140:150:170:1

100:1

21218912783

212

18921218921218914696

16815010166

168

15016815016815011676

401393334290 401

393401393401393334290

1.0995 x 10-4

0.9265 x 10-4

0.7895 x 10-4

0.7196 x 10-4

0.9201 x 10-4

0.8114 x 10-4

0.8043 x 10-4

0.7309 x 10-4

0.7273 x 10-4

6.9048 x 10-5

6.8872 x 10-5

6.8738 x 10-5

6.8667 x 10-5

120SingleStage

165DoubleStage

80 0-0.051

Ø116

2.525

9.5L

90SQUARE

403


Ø100 B.C.

6 0-0.030

Ø22 0-0.0127

* Values shown include pinion, clamp and sleeve and are for standard METRIC mountings. Efficiency rated at 3000 rpm input speed, at nominal rated torque. All torque ratings are based upon 3000 rpm nominal input speed and 20,000 hours minimum service life.

PRX PLANETARY GEARHEADS • SIZE 90

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Metric

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11-8D815


RTX PLANETARY GEARHEADS • SIZE 90

PRECISION SERIESSINGLE, DOUBLE & TRIPLE STAGE MATERIAL: Housing - Stainless Steel Mounting Flanges - Red Anodized Aluminum (Front) Aluminum (Back) Output Shafts - Stainless Steel Gears - Alloy and Stainless Steel Bearings - Ball Bearings

FEATURES: Standard METRIC Sizes High Torque Design with Optimized Gear Geometry High Torsional Stiffness Sealed to extend service life Captive, Bearing supported input pinion Simplified quick installation Single-piece construction Alloy Steel key is supplied

SPECIFICATIONS: Max. Input Speed: 6500 rpm Shaft Loading: Axial: 249.48 kgf. Value shown is for loads into the gearhead face. For loads away from the face, reduce by 50% Radial: See graph on page: 11-4 Min. Efficiency: Single Stage: 95% Double Stage: 90% Triple Stage: 85% Backlash: Single Stage: 4 arc min. Double Stage: 6 arc min. Triple Stage: 8 arc min. Operating Temperature: -40°C to +121°C Weight: Single Stage: 4.35 kg Double Stage: 5.89 kg Triple Stage: 7.39 kg Torsional Stiffness: 80.64 kgf-cm/arc min.

Catalog Number

METRIC COMPONENT

GearRatio

LMax.


TorqueN • m

Max.Momentary

TorqueN • m

Max.StoppingTorque

N • m

GearheadMoment


S9190AMRTX004S9190AMRTX005S9190AMRTX007S9190AMRTX010S9190AMRTX016S9190AMRTX020S9190AMRTX025S9190AMRTX028S9190AMRTX035S9190AMRTX040S9190AMRTX050S9190AMRTX070S9190AMRTX100S9190AMRTX160S9190AMRTX280S9190AMRTX400S9190AMRTX500S9190AMRTX700

4:15:17:1

10:116:120:125:128:135:140:150:170:1

100:1160:1280:1400:1500:1700:1

1641449863

164

14416414416414411273

164

144112

20718112380

207

18120718120718114192

207

181141

392375319277 392

375392375392375319277

392

375319

0.9159 x 10-4

0.7916 x 10-4

0.6932 x 10-4

0.6437 x 10-4

0.8474 x 10-4

0.7478 x 10-4

0.7429 x 10-4

0.6707 x 10-4

0.6682 x 10-4

0.6316 x 10-4

0.6303 x 10-4

0.6293 x 10-4

0.6299 x 10-4

0.6309 x 10-4

0.6291 x 10-4

0.6298 x 10-4

0.6298 x 10-4

0.6297 x 10-4

122SingleStage

194TripleStage

158DoubleStage

Ø80 0 -0.051

Ø116

2.525

9.5L

90SQUARE

403


Ø100 B.C.

6 0 -0.030

Ø22 0-0.0127

* Value shown include pinion, clamp and sleeve and are for standard METRIC mountings. Efficiency rated at 3000 rpm input speed, at nominal rated torque. All torque ratings are based upon 3000 rpm nominal input speed and 15,000 hours minimum service life.

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11-9D815


GEARHEAD TO MOTOR MOUNTING INFORMATION

MOUNTING INSTRUCTIONS:

A) Using the screws provided, bolt the mounting bracket to the input end of the gearhead ratio unit.

B) Slide the motor shaft sleeve into the input clamp and align the slot in the sleeve with the slot in the clamp.

C) Rotate the clamp to align the mounting bracket access holes with the clamping bolts.

D) Place the motor on a solid work surface with the output shaft pointing up. Slide the assembled gearhead onto the motor shaft.

E) Using a torque wrench, tighten the clamp bolts to the pretightening torque values listed below.

F) Using the screws provided, bolt the gearhead to the motor.

G) Using an alternating pattern, gradually tighten the clamp bolts until you reach the final tightening torque listed below.

2 416 2 416

0.20.41.80.20.41.8

39 76316 39 76316

4.4 8.5

36 4.4 8.5

36

Clamp Bolt Tightening Torques

Gearhead Frame SizePretightening Torque

lb. in. N • m

Final Tightening Torquelb. in. N • m

NEMA 23NEMA 34NEMA 42Metric 60Metric 90Metric 115

11 - gearheads and speed reducers i · 5:1 7:1 10:1 16:1 20:1 25:1 28:1 35:1 40:1 50:1 70:1 100:1...

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