Arc tooth Timing tooth
Type pb hg R r1 s 2δ profile angle
3M 3 1.28 0.91 0.26~0.35 1.90 0.762 ≈14°
5M 5 2.16 1.56 0.48~0.52 3.25 1.144 ≈14°
8M 8 3.54 2.57 0.78~0.84 5.35 1.372 ≈14°
14M 14 6.20 4.65 1.36~1.50 9.80 2.794 ≈14°
20M 20 8.60 6.84 1.95~2.25 14.80 4.320 ≈14°
Dimension of linear type pulley
Type MXL XXL XL L H XH XXH
bw 0.84±0.05 1.14±0.05 1.32±0.05 3.05±0.10 4.19±0.13 7.90±0.15 12.17±0.18
hg 0.69 0 0.84 0 1.65 0 2.67 0 3.05 0 7.14 0 10.31 0
-0.05 -0.05 -0.08 -0.10 -0.13 -0.13 -0.13
Φ+1.5° 20 25 25 20 20 20 20
rb 0.35 0.35 0.41 1.19 1.60 1.98 3.96
rt 0.13 +0.05 0.30 +0.05 0.64 +0.05 1.17 +0.13 1.60 +0.13 2.39 +0.13 3.18 +0.13
0 0 0 0 0 0 0
2β 0.508 0.508 0.508 0.762 1.372 2.794 3.048









Example of mark

1.Pulley Types
2.Dimension, Tolerance&Technical Parameters
3.Dimension of Pulley Tooth Flank Width
4.Order Attention