DRIVE DESIGN MANUAL - Gates Corporation

1 DRIVE DESIGN MANUAL DESIGN your drives online at O L Y CHAIN GT C ARBON B elt DRIVE Systems #17595 5/12 World HeadquartersGates Corporation1551 Wewatta StreetDenver, Colorado 80202 Tel: ExportsGates In terAmericaTel: 954-926-4568 Fax: ApplicationEngineersTel: PAGE Safety Policy .. 1 DRIVE Surve y SheetsLow-Speed DRIVE DESIGN Load Calculations and Information Sheet .. 4-7 High-Speed DRIVE Survey and Energy Savings Worksheet .. 8 Gates DESIGN IQ Data Worksheet .. 9 Poly Chain GT Carbon Belt DrivesBelt System S pecifications.

2 2 Gates Poly Chain GT Carbon Belt Standard Line .. 3 Standard Belt DRIVE Selection Pr ocedure .. 10-13 NEMA Minimum S procket Diameters .. 14 Poly Chain GT Carbon Belt Service Factors .. 15 Pol y Chain GT Carbon Belt DRIVE Se lection Tables8mm Pitch Belts .. 16-3114mm Pitch Belts .. 32-45 Poly Chain GT Carb on Belt Power Rating Tables8mm Pitch Belts .. 46-5314mm Pitch Belts .. 54-63 Poly Chain GT 2 sprocket SpecificationsSprocket Reference Drawings.. 648mm Pitch S procket Dimension Tabl es .. 65-6814mm Pitch S procket Dimension Tabl es.

3 69-73 sprocket S pecifications .. 74 Bored-To-Size S procket Bore Range Listing.. 75 Bored-To-Size S procket Re-bore Specifications and Instructions .. 76 Taper-Lock BushingsDrawings and Dimension Tabl es .. 77 Stock Bore and Keyseat Information .. 78-79 Taper-Lock Type S procket Install ation and Removal .. 80 Belt DRIVE Tensioners .. 81-82 Poly Chain GT2 sprocket Diameter TablesLong-Length Belting8mm Pitch Tabl e .. 83-8414mm Pitch Table .. 84-85 IntroductionDrive SelectionClamping Fixtures.. 86.. 87.. 87 DESCRIPTION PAGE Short-Length 8mm Pitch Pol y Chain GT Belt DrivesIn troduction.

4 88 Belt System Specifications.. 89 Stock Belt Lengths and Widths..908mm Pitch Belt DRIVE Selection Tabl es .. 90-93 Engineering Data Section I Application DESIGN Considerations1. Gear Motors/Speed Reducer Drives .. 94-952. Electr ic Motor Frame Dimensions .. 953. Minimum Recommended sprocket Diameters for General Purpose Electric Motors .. 964. High Driven Inertia Drives .. 965. Air Moving Drives ..96-976. Linear Motion Drives ..977. High Performance Vehicle Applications ..978. Belt DRIVE Registration.

5 979. Belt DRIVE Noise ..9810. Use of Flanged S prockets ..9811. Fixed (non-a djustabl e) Center Distance ..98-9912. Use of Idlers ..9913. Specifying Shaft Locations in Multipoint DRIVE Lay outs ..99-10014. Minimum Belt Wrap and Tooth Engagement .. 10015. Adverse Operating Environments .. 100 Section II Engineering DESIGN Considerations1. Belt Storage and Handling.. 1012. Center Distance and Belt Length .. 1013. Belt Tooth Pr of iles .. 1014. Static Conductivity .. 1025. sprocket Diameter and Speed.

6 1026. Efficiency .. 1027. Belt Tol erances .. 1038. Belt Install ation Tension .. 103-1049. Center Distance All owances for Install ation and Tensioning .. 10510. DRIVE Alignment .. 105-10611. Belt Install ation.. 10612. Belt Pull Calculations.. 10613. Bearing/Shaft Load Cal culations.. 106-10714. Self-Generated Tension .. 107 Technical DataTroubl eshooting .. 108-109 Standard Calculations .. 110 Useful Formulas and Calcula tions .. 111-112 Synchronous Belt Pr oduct DESIGN Catalogs .. 113 Tab le of ContentsSynchronous belts are being used more extensively than ever before in the industry where synchronization of one shaft speed to another is of primary importance.

7 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 2009 Gates CorporationDenver, Colorado 80202 Printed in rewordSAFETY POLICYWARNING!

8 Be Safe! Gates belt DRIVE systems ar e very reliable when usedsafely and within Gates application recommendations. However, there ar especific USES THAT MUST BE AVOIDEDdue to the risk of seriousinjury or death. These pr ohibited misuses include:Primary In-Flight Aircraft SystemsDo not use Gates belts, pulleys or sprockets on air craft, pr opeller or rotordrive systems or in-flight accessory drives. Gates belt DRIVE systems ar enot intended for air craft SystemsDo not use Gates belts, pulleys or sprockets in applications that dependsolely upon the belt to slow or stop a mass, or to act as a brake withoutan independent safety backup system.

9 Gates belt DRIVE systems are notintended to function as a braking device in emergency stop Driving Force in Power DRIVE DESIGN SOFTWARED rive DESIGN software can be found This software assi sts designers in quicklyse lec ting optimum DRIVE CorporationTo satisfy a wide range of loads, speeds and applications, Poly Chain GTCarbon belts and sprockets are made in a selection of sizes, capacitiesand three principal dimensions of a belt are:ppiittcchh ppiittcchh lleennggtthh wwiiddtthhBelt pitch is the distance in millimeters between two adjacent tooth centersas measured on the pitch line of the belt.

10 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 three principal dimensions of a sprocket are:ppiittcchh nnuummbbeerr ooff sspprroocckkeett ggrroooovveess wwiiddtthhOn 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 circleof the sprocket coincides with the pitch line of the belt mating with it. Thesprocket s pitch diameter is always greater than its outside Poly Chain GT Carbon belt must be run with Poly Chain GT2 sprock-ets of the same Poly Chain GT Carbon belts are made in 8mm and 14mm belt sizes are listed in the stock Poly Chain GT Carbon BeltTables on page 3.