ENGINEERING - York Ind

1 ENGINEERINGT iming belt DrivesTolerances & SpecificationsTiming Pulleys - timing Pulley Stock Flanges - BeltsE1 Table of Contents TOLERANCES & SPECIFICATIONST iming pulleys, timing pulley stock, flangesTOLERANCES & SPECIFICATIONSB eltsCENTER DISTANCE CALCULATIONAUTOmATED DRIvE DESIGN SOFTwARESTANDARD CALCULATIONSSPECIFICATION FOR DRIvES USING SYNCHRONOUS BELTSSYNCHRONOUS BELTSBELT PROFILE AND pitch SELECTIONBELT mATERIALS AND CONSTRUCTIONTRUmOTION BELTSSHAFT-SAvER vS STANDARD SET SCREwSSHAFT-SAvER GRIPPING TORQUE E32 York also manufactures custom pulleys and complete web: PULLEYS pitch (40 ) +.

2 000 2mm, 3mm, 5mm, .080 , 1/5 , 3/8 pitch 0 +.002 +.003 +.004 +.005 +.006 +.007 AND UP +.008 TOLERANCES 0 +.001 +.0015 +.002 AND UP +.0025 TOLERANCE(PULLEY BORE TO )0 .004 AND UP .0005 PER INCH OF PULLEY DIA. (NOT TO EXCEED TOLERANCE)E2 TOLERANCES & SPECIFICATIONST iming pulleys timing pulley stock flangesLATERAL RUN OUT PER INCH OF PULLEY DIA.

3 (.020 MAX.) timing PULLEY STOCK TOLERANCES .0816 pitch (40 ) +.000 , 3mm, 5mm, .080 , 1/5 , 3/8 pitch 0 +.002 +.003 +.004 +.005 TOLERANCES OvERALL FORmED pitch THICKNESS .080 .003 .015 .010 .0816 .003 .015 .010 (40 ) 2mm .003 .015 .010 3mm .003 .015 .010 5mm .003 .015 .010 1/5 .003 .015 .010 3/8 .005 .015.

4 010 ENGINEERING303 Nassau Blvd., Garden City Park, NY 11040 Tel: 1-800 354 8466 Fax: 1-800 354 8485 ISO 9001: 2008 PITCHNEOPRENE AND TRUMOTIONBREAKING STRENGTH425 LBS PER INCH OF belt WIDTHTEmPERATURE RANGE-30 F TO 185 FwIDTH TOLERANCESEE CHART ON PAgE PITCHURETHANE POLYESTER CORDBREAKING STRENGTH520 LBS. PER INCH OF WIDTHTEmPERATURE RANGE0 F TO 180 FLENGTH TOLERANCECENTER DISTANCE TOLERANCE .020 wIDTH TOLERANCE .020 FOR BELTS 1/16 - 4 PITCHURETHANEKEVLAR CORDBREAKING STRENGTH1050 LBS. PER INCH OF WIDTHTEmPERATURE RANGE0 F TO 180 FLENGTH TOLERANCECENTER DISTANCE TOLERANCE .020 wIDTH TOLERANCE .020 FOR BELTS 1/16 - 4 WIDETOLERANCES & pitch (40 )URETHANEPOLYESTER CORDBREAKING STRENGTH520 LBS.

5 PER INCH OF WIDTHTEmPERATURE RANGE0 F TO 180 FLENGTH TOLERANCECENTER DISTANCE TOLERANCE .020 wIDTH TOLERANCE .020 FOR BELTS 1/16 - 4 pitch (40 )URETHANEKEVLAR CORDBREAKING STRENGTH1050 LBS. PER INCH OF WIDTHTEmPERATURE RANGE0 F TO 180 FLENGTH TOLERANCECENTER DISTANCE TOLERANCE .020 wIDTH TOLERANCE .020 FOR BELTS 1/16 - 4 WIDEENGINEERINGYork also manufactures custom pulleys and complete web: PITCHURETHANEPOLYESTER CORDBREAKING STRENGTH630 LBS. PER INCH OF WIDTHTEmPERATURE RANGE0 F TO 180 FLENGTH TOLERANCECENTER DISTANCE TOLERANCE .020 wIDTH TOLERANCE .020 FOR BELTS 1/16 4 WIDE1/5 PITCHURETHANEKEVLAR CORDBREAKING STRENGTH2500 LBS.

6 PER INCH OF WIDTHTEmPERATURE RANGE0 F TO 180 FLENGTH TOLERANCECENTER DISTANCE TOLERANCE .020 wIDTH TOLERANCE .020 FOR BELTS 1/16 4 WIDE1/5 PITCHNEOPRENE AND TRUMOTIONBREAKING STRENGTH895 LBS. PER INCH OF WIDTHTEmPERATURE RANGE-30 F TO 185 FLENGTH TOLERANCECENTER DISTANCE TOLERANCE .020 wIDTH TOLERANCESEE CHART ON PAgE E6E43/8 PITCHURETHANEPOLYESTER CORDBREAKING STRENGTH630 LBS. PER INCH OF WIDTHTEmPERATURE RANGE0 F TO 180 FLENGTH TOLERANCECENTER DISTANCE TOLERANCE .020 wIDTH TOLERANCE .020 FOR BELTS 1/16 4 WIDE3/8 PITCHURETHANEKEVLAR CORDBREAKING STRENGTH3000 LBS. PER INCH OF WIDTHTEmPERATURE RANGE0 F TO 180 FLENGTH TOLERANCECENTER DISTANCE TOLERANCE.

7 020 wIDTH TOLERANCE .020 FOR BELTS 1/16 4 WIDE3/8 PITCHNEOPRENE AND TRUMOTIONBREAKING STRENGTH920 LBS. PER INCH OF WIDTHTEmPERATURE RANGE-30 F TO 185 FLENGTH TOLERANCECENTER DISTANCE TOLERANCE .020 wIDTH TOLERANCESEE CHART ON PAgE E6 TOLERANCES & SPECIFICATIONSBELTS - continuedENGINEERING303 Nassau Blvd., Garden City Park, NY 11040 Tel: 1-800 354 8466 Fax: 1-800 354 8485 ISO 9001: 2008 RegisteredENGINEERINGE53 mm HTD PITCHNEOPRENE ANDTRUMOTIONBREAKING STRENGTH920 LBS. PER INCH OF WIDTHTEmPERATURE RANGE-30 F TO 185 FLENGTH TOLERANCECENTER DISTANCE TOLERANCE .020 wIDTH TOLERANCESEE CHART ON PAgE E65 mm HTD PITCHNEOPRENE ANDTRUMOTIONBREAKING STRENGTH1800 LBS.

8 PER INCH OF WIDTHTEmPERATURE RANGE-30 F TO 185 FLENGTH TOLERANCECENTER DISTANCE TOLERANCE .020 wIDTH TOLERANCESEE CHART ON PAgE E62 mm GT2 pitch NEOPRENE ANDTRUMOTIONBREAKING STRENGTH495 LBS. PER INCH OF WIDTHTEmPERATURE RANGE-30 F TO 185 FLENGTH TOLERANCECENTER DISTANCE TOLERANCE .020 wIDTH TOLERANCESEE CHART ON PAgE E63 mm GT2 PITCHNEOPRENE ANDTRUMOTIONBREAKING STRENGTH880 LBS. PER INCH OF WIDTHTEmPERATURE RANGE-30 F TO 185 FLENGTH TOLERANCECENTER DISTANCE TOLERANCE .020 wIDTH TOLERANCESEE CHART ON PAgE E6 TOLERANCES & SPECIFICATIONSBELTS - continuedYork also manufactures custom pulleys and complete web: , 3mm, 5mm.

9 080 , 1/5 - 3/8 pitch NEOPRENE AND TRUMOTION BELTSTEMPERATURE RANgE -30 F TO 185 FSTANDARD timing BELTwIDTH TOLERANCES(FOR NEOPRENE AND TRUMOTION BELTS 2mm, 3mm, 5mm, .080 , 1/5 AND 3/8 pitch )*TWIN POWER BELTS 1/5 3/8 PITCHBLACK NEOPRENE FIBREgLASS CORDTEMPERATURE RANgE -30 F TO 185 FTWIN POWER TOLERANCESS ince twin power belts are manufactured and cut to the required width by the same method as standard belts, the same manufacturing tolerances apply, except for the thickness and length tolerances which are shown in the fol-lowing THICKNESS TOLERANCESSTANDARD NEOPRENE AND TRUmOTION timing belt CENTER-DISTANCE TOLERANCES*Over 1/2 in pitch for belts up to and including 4 inches wide, tolerance= 3/16 in.

10 For belts over 4 inches wide, tolerance +3/16 1 TO 7/16 OVER 7/16TO 1-1/2 OVER 1-1/2TO 2 OVER 2TO 2-1/2 OVER 2-1/2TO 3 OVER 3TO 4 OVER 4+1/64-1/32+1/32-1/32+1/32-3/64+3/64-3/6 4+3/64-1/16+1/16-1/16+3/32-3/32+1/64-1/3 2+1/32-3/64+3/64-3/64+3/64-1/16+1/16-1/1 6+1/16-5/64+3/32-7/64+1/32-3/64+3/64-1/1 6+1/16-1/16+1/16-5/64+5/64-5/64+3/32-1/8 WIDTHTOLERANCEON BELTLENGTHS0" TO 33"WIDTHTOLERANCEON BELTLENGTHSOVER 66"WIDTHTOLERANCEON BELTLENGTHSOVER33" TO 66"PITCHT (IN.)W (IN.)1/5-INCH (XL)3/8-INCH (L).120 ..004 CENTER-DISTANCE TOLERANCESBELT LENGTH TO 20 OVER 20 TO 30 OVER 30 TO 40 OVER 40 TO 50 OVER 50 TO 60 OVER 60 TO 70 OVER 70.