DRIVE DESIGN MANUAL - assets.gates.com

1 P O LY C H A I N G T . CARBON Belt DRIVE Systems #17595. 5/12. DRIVE DESIGN MANUAL . DESIGN your drives online at Table of Contents World Headquarters Gates Corporation DESCRIPTION PAGE DESCRIPTION PAGE 1551 Wewatta Street Denver, Colorado 80202. Safety Policy .. 1 Engineering Data Tel: 303-744-1911. DRIVE Survey Sheets Section I Application DESIGN Considerations 1. Gear Motors/Speed Reducer Drives .. 94-95. Low-Speed DRIVE DESIGN Load Calculations 2. Electric Motor Frame Dimensions .. 95 For Exports and Information Sheet .. 4-7. High-Speed DRIVE Survey and Energy Savings Worksheet .. 8 3. Minimum Recommended Sprocket Gates InterAmerica Gates DESIGN IQ Data Worksheet.

2 9 Diameters for General Purpose Electric Motors .. 96 Tel: 954-926-4568. 4. High Driven Inertia Drives .. 96 Fax: 954-926-8024. Poly Chain GT Carbon Belt Drives 5. Air Moving Drives .. 96-97 Belt System Specifications.. 2 6. Linear Motion Drives .. 97. Gates Poly Chain GT Carbon Belt Standard Line .. 3. Standard Belt DRIVE Selection Procedure .. 10-13. 7. High Performance Vehicle Applications .. 97 Product Application 8. Belt DRIVE Registration .. 97. NEMA Minimum Sprocket Diameters .. 14 9. Belt DRIVE Noise .. 98 Engineers Poly Chain GT Carbon Belt Service Factors .. 15 10. Use of Flanged Sprockets .. 98. Poly Chain GT Carbon Belt DRIVE Selection Tables Tel: 303-744-5800.

3 11. Fixed (non-adjustable) Center Distance .. 98-99 8mm Pitch Belts.. 16-31 12. Use of Idlers .. 99. 14mm Pitch Belts .. 32-45 13. Specifying Shaft Locations in Multipoint Poly Chain GT Carbon Belt Power Rating Tables DRIVE Layouts .. 99-100. 8mm Pitch Belts .. 46-53 14. Minimum Belt Wrap and Tooth Engagement .. 100. 14mm Pitch Belts .. 54-63 15. Adverse Operating Environments .. 100. Poly Chain GT 2 Sprocket Specifications Section II Engineering DESIGN Considerations Sprocket Reference Drawings.. 64 1. Belt Storage and Handling.. 101. 8mm Pitch Sprocket Dimension Tables.. 65-68 2. Center Distance and Belt Length .. 101. 14mm Pitch Sprocket Dimension Tables.

4 69-73 3. Belt Tooth Profiles .. 101. Sprocket Specifications .. 74 4. Static Conductivity .. 102. Bored-To-Size Sprocket Bore Range Listing.. 75 5. Sprocket Diameter and Speed .. 102. Bored-To-Size Sprocket Re-bore Specifications 6. Efficiency .. 102. and Instructions .. 76 7. Belt Tolerances .. 103. Taper-Lock Bushings 8. Belt Installation Tension .. 103-104. Drawings and Dimension Tables .. 77 9. Center Distance Allowances for Installation Stock Bore and Keyseat Information .. 78-79 and Tensioning .. 105. Taper-Lock Type Sprocket Installation and Removal .. 80 10. DRIVE Alignment .. 105-106. Belt DRIVE Tensioners .. 81-82 11.

5 Belt Installation.. 106. 12. Belt Pull Calculations.. 106. Poly Chain GT2 Sprocket Diameter Tables 13. Bearing/Shaft Load Calculations.. 106-107. 8mm Pitch Table .. 83-84 14. Self-Generated Tension .. 107. 14mm Pitch Table .. 84-85. Technical Data Long-Length Belting Troubleshooting .. 108-109. Introduction .. 86 Standard Calculations .. 110. DRIVE Selection .. 87 Useful Formulas and Calculations .. 111-112. Clamping Fixtures .. 87 Synchronous Belt Product DESIGN Catalogs .. 113. Short-Length 8mm Pitch Poly Chain GT Belt Drives Introduction .. 88. Belt System Specifications.. 89. Stock Belt Lengths and Widths.. 90. 8mm Pitch Belt DRIVE Selection Tables.

6 90-93. Foreword Synchronous belts are being used more extensively than ever before in the industry where synchronization of one shaft speed to another is of primary importance. Gates Corporation has prepared this complete Poly Chain GT Carbon Belt DRIVE DESIGN MANUAL to handle these ex- acting applications. Poly Chain drives also eliminate maintenance and noise problems associated with chain drives and reduce maintenance required on other problem power transmission drives. Stock Belt Drives are presented in this MANUAL for your convenience. If your DRIVE requirements (Speed, Ratio, Center Distance, Space, Horsepower) are not met, contact your local Gates representative.

7 Copyright 2009. Gates Corporation Denver, Colorado 80202. Printed in SAFETY POLICY. WARNING! Be Safe! Gates belt DRIVE systems are very reliable when used safely and within Gates application recommendations. However, there are specific USES THAT MUST BE AVOIDED due to the risk of serious injury or death. These prohibited misuses include: Primary In-Flight Aircraft Systems Do not use Gates belts, pulleys or sprockets on aircraft, propeller or rotor DRIVE systems or in-flight accessory drives. Gates belt DRIVE systems are not intended for aircraft use. Braking Systems Do not use Gates belts, pulleys or sprockets in applications that depend solely upon the belt to slow or stop a mass, or to act as a brake without an independent safety backup system.

8 Gates belt DRIVE systems are not intended to function as a braking device in emergency stop systems. DRIVE DESIGN SOFTWARE. DRIVE DESIGN software can be found at This software assists designers in quickly selecting optimum DRIVE solutions. The Driving Force in Power Transmission. 1. Gates Poly Chain GT Carbon Belt System Specifications To satisfy a wide range of loads, speeds and applications, Poly Chain GT. Carbon belts and sprockets are made in a selection of sizes, capacities and dimensions. The three principal dimensions of a belt are: pitch pitch length width Belt pitch is the distance in millimeters between two adjacent tooth centers as measured on the pitch line of the belt.

9 Belt pitch length is the total length (circumference) in millimeters as measured along the pitch line. The theoret- ical pitch line of a Poly Chain GT Carbon belt lies within the tensile member. The three principal dimensions of a sprocket are: pitch number of spr ocket gr ooves width On the sprocket, pitch is the distance between groove centers and is meas- ured on the sprocket's pitch circle. See illustration at right. The pitch circle of the sprocket coincides with the pitch line of the belt mating with it. The sprocket's pitch diameter is always greater than its outside diameter. Any Poly Chain GT Carbon belt must be run with Poly Chain GT2 sprock- ets of the same pitch.

10 Gates Poly Chain GT Carbon belts are made in 8mm and 14mm pitches. Standard belt sizes are listed in the stock Poly Chain GT Carbon Belt Tables on page 3. Specifications for the 8mm and 14mm pitch belts list the belt pitch lengths, number of teeth, stock widths and appropriate weights. Using the information from these tables, a code for ordering a specific belt can be determined as shown in the following examples: Belt Belt Belt Pitch Pitch Length Width (mm) (mm) (mm). 8 MGT 640 12. 14 MGT 1190 37. Sprockets for Poly Chain GT Carbon belts are also made in 8mm and 14mm pitches. Standard sprocket sizes are listed in the Sprocket Specification Tables on Pages 64 through 74.