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Table of Tolerances

(timing pulleys • timing pulley stock • flanges)

  • TIMING PULLEYS O.D. TOLERANCES
  • .0816” PITCH (40 DP) +.000 -.003
  • 2mm, 3mm, 5mm, .080”, 1/5”, 3/8” PITCH

  • 0” – 1.000” O.D. +.002 -.000
    1.001” – 2.000” O.D. +.003 -.000
    2.001” – 4.000” O.D. +.004 -.000
    4.001” – 7.000” O.D. +.005 -.000
    7.001” – 12.000” O.D. +.006 -.000
    12.001” – 20.000” O.D. +.007 -.000
    20.000” AND UP O.D. +.008 -.000

  • LATERAL RUN OUT TOLERANCE

  • .001 T.I.R. PER INCH OF PULLEY DIA. (.020 MAX.)

  • BORE TOLERANCES

  • 0” – 1.000” +.001 -.000
    1.001” – 2.000” +.0015 -.000
    2.001” – 3.000” +.002 -.000
    3.001” AND UP +.0025 -.000

  • TIMING PULLEY STOCK O.D. TOLERANCES
  • .0816” PITCH (40 DP) +.000 -.003
  • 2mm, 3mm, 5mm, .080”, 1/5”, 3/8” PITCH

  • 0” – 1.000” O.D. +.002 -.000
    1.001” – 2.000” O.D. +.003 -.000
    2.001” – 4.000” O.D. +.004 -.000
    4.000” – 7.000” O.D. +.005 -.000

  • ECCENTRICITY TOLERANCE
  • (PULLEY BORE TO O.D.)

  • 0” – 8.000” .004
    T.I.R. 8.000” AND UP
    .0005 T.I.R. PER INCH OF PULLEY DIA. (NOT TO EXCEED O.D. TOLERANCE)

  • FLANGE TOLERANCES
  • OVERALL FORMED PITCH I.D. O.D. THICKNESS

  • .080 ±.003 ±.015 ±.010
    .0816 ±.003 ±.015 ±.010
    (40 DP) 2mm ±.003 ±.015 ±.010
    3mm ±.003 ±.015 ±.010
    5mm ±.003 ±.015 ±.010
    1/5” ±.003 ±.015 ±.010 3/8” ±.005 ±.015 ±.010

  • 1/5” PITCH
  • URETHANE KEVLAR CORD
  • BREAKING STRENGTH: 2500 LBS. PER INCH OF WIDTH
  • TEMPERATURE RANGE:0°F TO 180°F
  • LENGTH TOLERANCE:CENTER DISTANCE TOLERANCE ± .020”
  • WIDTH TOLERANCE:± .020” FOR BELTS 1/16”– 4” WIDE
  • 3/8” PITCH
  • URETHANE KEVLAR CORD
  • BREAKING STRENGTH:3000 LBS. PER INCH OF WIDTH
  • TEMPERATURE RANGE: 0°F TO 180°F
  • LENGTH TOLERANCE:CENTER DISTANCE TOLERANCE ± .020”
  • WIDTH TOLERANCE:± .020” FOR BELTS 1/16”– 4” WIDE
  • 1/5” PITCH
  • Neoprene and TruMotion
  • BREAKING STRENGTH:895 LBS. PER INCH OF WIDTH
  • TEMPERATURE RANGE:-30°F TO 185°F
  • LENGTH TOLERANCE:CENTER DISTANCE TOLERANCE ± .020”
  • WIDTH TOLERANCE:see chart on page E6
  • 3/8” PITCH
  • Neoprene and TruMotion
  • BREAKING STRENGTH:920 LBS. PER INCH OF WIDTH
  • TEMPERATURE RANGE:-30°F TO 185°F
  • LENGTH TOLERANCE:CENTER DISTANCE TOLERANCE ± .020”
  • WIDTH TOLERANCE:see chart on page E6