Table of Tolerances

TIMING PULLEYS O.D. TOLERANCES

.080" PITCH +.003 -.000
.0816" PITCH (40D.P.) +.000 -.003

2mm, 3mm, 5mm, 1/5” TO 1-1/4" 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 (40 DP) ±.003 ±.015 ±.010
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