[PDF] Gates Heavy Duty V-Belt Drive Design Manual 14995-A

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Gates Heavy Duty V-Belt Drive Design Manual 14995-A

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The world's most trusted name in belts, hose and hydraulics.

HeavyDutyV-BeltDriveDesign Manual

Super HC® V-BeltsSuper HC PowerBand® lBelts

Super HC Molded Notlch V-Belts

Super HC Molded Notlch PowerBand Belts

Hi-Power® II V-Belts

Hi-Power II PowerBalnd Belts

Tri-Power® Molded Noltch V-BeltsMicro-V® Belts

Polyflex® JB®

Predator™ Belts14995-A

5/2001

Copyright 1999

The Gates Rubber Company

Denver, ColoradoPrinted in U.S. of America

Preface

This manual includes tables, specifications and procedures necessary to design drives using the following Gates Heavy Duty Industrial Belts:

Super HC

V-Belts and Super HC PowerBand

Belts Super HC Molded Notch V-Belts and Super HC Molded Notch

PowerBand Belts

Hi-Power

II V-Belts and Hi-Power II PowerBand Belts

Tri-Power

Molded Notch V-Belts

Micro-V

Belts

Polyflex

JB

Included are sections on special drives such as:

Speedup

V-Flat

Idler

Quarter-Turn

Variable Pitch V-Belt

There also is a large section on engineering information related to V-Belt drives. NOTE: This manual reflects a recent change in the industry standard for classical V-Belts and Sheaves - a move from the ÒPitchÓ System to the recently adopted ÒDatumÓ System. For more details on this change, see Page 219. If you have questions or suggestions concerning data in this manual, contact your local Gates representative or write to:

Power Transmission Division

V-Belt Product Application

The Gates Rubber Company

900 South Broadway

• P.O. Box 5887

Denver, Colorado 80217-5887

IMPORTANT

Gates recommends only those applications of products

specified in Gates product literature. Gates disclaimsany liability for use of its products in applications other

than those for which they were designed.

WARNING!

Be safe! Do not use Gates Belts, pulleys or sprockets on aircraft propeller or rotor drive systems or in-flight accessory drives. Gates products are not designed or intended for aircraft use.

Table of Contents

Description Page

Product Features

Belt Features and Size Listings. . . . . . . . . . . . . . . 2-13

Stock Drive Selection

How to Select. . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-18 Service Factor Table. . . . . . . . . . . . . . . . . . . . . . 14 Cross Section Selection Charts. . . . . . . . . . . . . 15-17 NEMA Minimum Sheave Diameters. . . . . . . . . . . . 19 Drive Selection Examples. . . . . . . . . . . . . . . . . . . 20, 21

Selection Tables - Super HC

and Super HC

Molded Notch PowerBand

Belt Drives

Center Distance and Belt Length. . . . . . . . . . 22-69 Horsepower Rating Tables. . . . . . . . . . . . . . 70-74

Selection Tables - Hi-Power

II, PowerBand and

Tri-Power

Molded Notch V-Belts

Center Distance and Belt Length. . . . . . . . . 76-125 Horsepower Rating Tables. . . . . . . . . . . . . 126-132

Selection Tables - Polyflex

JB Belts

Polyflex

Product Information. . . . . . . . . . . 196-200

Center Distance and Belt Length. . . . . . . . . 134-151 Horsepower Rating Tables. . . . . . . . . . . . . 152-154 Polyflex JB Length Correction Factors. . . . . . 155

Selection Tables - Micro V

Belts Center Distance and Belt Length. . . . . . . . . 156-189 Horsepower Rating Tables. . . . . . . . . . . . . 190-192 Installation and Takeup Allowances. . . . . . . . . . 193-194 Belt Matching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

Drive Design

Nonstock Drive Selection Procedure. . . . . . . . . 201-209 Drive Selection Examples. . . . . . . . . . . . . . . . . . 210-211

Tensioning

How to Tension V-Belt Drives. . . . . . . . . . . . . . . 212-215 Tensioning Example. . . . . . . . . . . . . . . . . . . . . . . . 216 *Registered trademark of Reliance Electric.

Description Page

Sheaves and Bushings

Types Available. . . . . . . . . . . . . . . . . . . . . . . . . . 217-218 Datum System. . . . . . . . . . . . . . . . . . . . . . . . . . . . 219 Groove Dimensions. . . . . . . . . . . . . . . . . . . . . . . 220-221 QD Bushing Dimensions. . . . . . . . . . . . . . . . . . . . 222 Taper-Lock* Bushing Dimensions. . . . . . . . . . . . . 230

Super HC Sheaves

QD Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . 223-225 Taper-Lock Dimensions. . . . . . . . . . . . . . . . . . . . 231-234

Hi-Power II Sheaves

QD Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . 226-229 Taper-Lock Dimensions. . . . . . . . . . . . . . . . . . . . 235-240

Special Drives

Stationary Control Variable Pitch Drives. . . . . . . 241-245 Belt Drive Tensioners. . . . . . . . . . . . . . . . . . . . . . 246 Idlers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247-249 V-Flat Drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . 250-252 Quarter-Turn Drives. . . . . . . . . . . . . . . . . . . . . . . 253-254 PowerBand Belts. . . . . . . . . . . . . . . . . . . . . . . . . . 255 Nu-T-Link† and Supreme V-Link Belting. . . . . . . . 256 Easy-Splice V-Belting. . . . . . . . . . . . . . . . . . . . . . 257

Engineering Information & Technical Data,

Conversion Tables

Drive Installation. . . . . . . . . . . . . . . . . . . . . . . . . . 258 Useful Formulas. . . . . . . . . . . . . . . . . . . . . . . . . . . 259 Horsepower Rating Formulas. . . . . . . . . . . . . . . 260-261 Flywheel Effect. . . . . . . . . . . . . . . . . . . . . . . . . . . 262 NEMA Frames and Minimum Diameters. . . . . . . . 263 Belt Pull and Bearing Loads. . . . . . . . . . . . . . . . 264-265 Gates Service Factor Charts. . . . . . . . . . . . . . . . . 266 Industry Standards for V-Belts. . . . . . . . . . . . . . . . 267 Decimal and Millimeter Equivalents of Fractions. 268 Weights and Measures Conversions. . . . . . . . . . . 269 Temperature Conversion. . . . . . . . . . . . . . . . . . . . 270 †Registered trademark of Fenner Manheim. The world's most trusted name in belts, hose and hydraulics. Page 1

This Manual Guides You in Designing Drives Using These Gates V-BeltsThis Manual Guides You in Designing Drives Using These Gates V-Belts

The Gates Rubber CompanyPage 2

Super HC

V-Belts

3V250 through 3V1400

5V500 through 5V3550

8V1000 through 8V5600

Gates Super HC V-Belts combine modern high capacity material with the revolutionary "narrow" cross section pioneered by Gates. They can transmit up to 3 times the horsepower of conventional V-belts in the same drive space-or the same horsepower in 1/2 to 2/3 the space. Super HC belts can be used on all industrial integral horsepower drives. They are also suitable for low and high speed drives in those speed ranges where conventional belts have limited capacity. In many cases, they can replace high maintenance chain and gear drives. Super HC V- Belts have exclusive Gates construction features for extra long drive life.

Super HC

Molded Notch V-Belts

3VX250 through 3VX1400

5VX450 through 5VX2000

Gates Super HC Molded Notch V-Belts are designed for use where conventional V-belts drives are impractical, where space, weight or sheave limitations are present, and where increased horsepower capacity of production is required and higher speed are necessary. With smaller sheave diameters, these belts offer a higher horsepower rating than any other V-belts on the market.

Super HC

PowerBand

Belts

2/3V800 through 5/3V1400

2/5V500 through 5/5V3500

3/8V1000 through 5/8V6000

2/3VX250 through 5/3VX1400

2/5VX500 through 5/5VX2000

Gates PowerBand Belts were developed by Gates for drives subjected to pulsating shock loads. These include applications such as compressors, rock crushers, hammers or pug mills. A PowerBand belt is made by joining together two or more Gates V-belts with a permanent, high strength tie band. These readily bend over sheaves as easily as multiple V-belts. However, the tie band keeps the belts running in a straight line into the sheave grooves even under violent pulsating or shock loads. And, these PowerBand belts cannot turn over or jump off the drive. Gates PowerBand belts provide the most advanced V-belt drive system available.

This Manual Guides You in Designing Drives Using These Gates V-BeltsThis Manual Guides You in Designing Drives Using These Gates V-Belts

Predator

TM

V-Belts

Gates Predator V-Belts are specially reinforced for demanding applications such as those typically found in the wood and lumber processing industry, mining, agriculture, oil field equipment and heavy construction. This new generation PowerBand

Belt is made by joining

two or more Gates V-belts with a permanent, high-strength tie-band. It bends as easily as multiple V-belts over sheaves, but the tie-band keeps the belts from bending sideways. This lateral rigidity keeps the belt running in a straight line into the grooves even under violent pulsating or shock loads. It cannot turn over-or jump off. These extra heavy-duty V-belts are constructed with a treated fabric cover, aramid tensile and are oil and heat resistant. Available in narrow and classical profiles, they are precision-matched to optimize performance.

Hi-Power

II V-Belts

A24 through A180

B28 through B315

C48 through C420

D105 through D660

Hi-Power II V-Belts feature a composite multipurpose construction. Concave sidewalls fill out, making uniform contact with the sheave groove and distributing wear uniformly. The arched top provides superior strength to prevent "dishing" and distortion of the tensile section. The Flex-Weave cover protects the core of the belt and its extra flexibility allows the belt to bend easily in even the smallest sheaves. Constructed with special rubber compounds, these belts resist oil and heat, ozone, sunlight weather and aging. Its superior length stability assures that Gates Hi-Power II V-Belts require less retensioning and takeup during their service. The World"s Most Trusted Name In Belts, Hose and HydraulicsPage 3

This Manual Guides You in Designing Drives Using These Gates V-BeltsThis Manual Guides You in Designing Drives Using These Gates V-Belts

Page 4

Hi-Power

II PowerBand

Belts

2/B62 through 5/B315

2/C68 through 5/C420

3/D144 through 5/D660

Recommended for all multiple V-belt drives exposed to pulsating loads or heavy shock loads. Developed and patented by Gates, these Hi-Power II Powerband Belts pull like multiple V-belts, yet have additional lateral rigidity to eliminate problems caused by whipping belts that turn over or come off the drive. These belts operate in standard V-belt sheaves. The tensile section in each belt strand is within the sheave groove and the tie-band does not touch the bottom of the sheave. As a result, Hi-Power II PowerBand Belts operate without slip at low tension (low tension results in lower bearing loads).

Tri-Power

Molded Notch V-Belts

AX21 through AX173

BX28 through BX300

CX51 through CX360

Especially suited for drives with smaller diameter sheaves, Gates Tri- Power Molded Notch V-Belts carry a higher horsepower rating than conventional cross-section belts. A special compound provides oil and heat resistance and helps resist ozone, sunlight, weather and aging. A proprietary material surrounding the tensile members bonds the cords and rubber during vulcanization into a unit that provides long service without cord separation. Special notches molded into the belt during manufacturing reduce bending stress. The edges of Tri-Power Molded Notch V-Belts are precisely cut to exact dimensions to assure uniform fit along the sides of sheave grooves.

The Gates Rubber Company®

This Manual Guides You in Designing Drives Using These Gates V-BeltsThis Manual Guides You in Designing Drives Using These Gates V-Belts

Polyflex

JB Belts

5M 7M 11M

Recommended for high precision applications, Polyflex JB Belts can operate at very high shaft speeds-in excess of 10,000 rpm. They run on small diameter sheaves with high horsepower capacities and are precisely manufactured without laps and layers to achieve a uniformity not possible with traditional rubber construction belts. Gates special urethane compound used in Polyflex JB Belts is resistant to fatigue, wear, ozone and environmental conditions.

Micro-V

Belts

J Section L Section M Section

Gates Micro-V Belts are extremely smooth running and are oil and heat resistant. The truncated rib profile increases flexibility and allows the belt to perform at very high speeds on smaller diameter sheaves. Woven fabric rib surface improves wear resistance and provides a clutching surface. Horsepower ratings exceed RMA standards. Recommended for high-speed applications such as rock crushers, drilling rigs, cranes, road paving equipment and many more.

Page 5

The World"s Most Trusted Name In Belts, Hose and Hydraulics

Super HC

and Super HC Molded Notch V-Belts and

PowerBand

Belts Sizes

(PowerBand Belts are available in 2, 3, 4 or 5 bands in sizes shown, or wider, on a standard non-stock basis.) .38".38" .32".32" .53" .62" .53" .62" .91" 1.0"

3VX & 3V 5VX & 5V 8V

Numerical Suffix The Same For 3V & 3VX Belts Numerical Suffix The Same For 5V & 5VX In Sizes 500 thru 2000.

RMA

Nomen-

clature

Lengths

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