Catalogo

14995-A
8/99

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

Heavy Duty V-Belt
Drive Design Manual

s
® V-Belt
Super HC
lts
and® Be
C PowerB
Super H
V-Belts
ed Notch
r HC Mold
Supe
nd Belts
PowerBa
ed Notch
Mold
Super HC
II V-Belts
Hi-Power®
d Belts
owerBan
ower II P
Hi-P
lts
otch V-Be
Molded N
r®
Tri-Powe
Belts
Micro-V®
JB®
Polyflex®
BeltsPredator™

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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 “Pitch” System to therecently adopted
“Datum” 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 thoseapplications of products
specified in Gates product literature. Gates disclaims

any 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.Copyright 1999
The Gates Rubber Company
Denver, Colorado

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Printed in U.S. of America

Table of Contents
Description

Page

Product Features

Description

Page

Sheaves and Bushings

Belt Features and Size Listings. . . . . . . . . . . . . . . 2-13
Stock Drive Selection
How to Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-18Service 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. . . . . . . . . . 22-69Horsepower 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

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