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