Dimension of 8M Type Pulley
（mm）
Type Tooth No. Pitch diameter d Outside diameter do Diameter of capped edge df

Bore of capped edge db

 Thick of capped edge h
22-8M 22 56.02

54.65

 61 45 1.5
23-8M 23 58.57

57.20

 64 48 1.5
24-8M 24 61.12

59.75

 68 52 1.5
25-8M 25 63.66

62.29

 75 55 1.5
26-8M 26 66.21

64.84

 75 55 1.5
27-8M 27 68.75

67.38

 75 55 1.5
28-8M 28 71.30

69.93

 80 60 1.5
30-8M 30 76.39

75.02

 82 64 1.5
32-8M 32 81.49

80.12

 90 70 1.5
34-8M 34 86.58

85.21

 98 78 1.5
36-8M 36 91.67

90.30

 98 78 1.5
38-8M 38 96.77

95.40

 106 88 1.5
40-8M 40 101.86

100.49

 108.5 90 1.5
42-8M 42 106.95

105.58

 115 95 1.5
44-8M 44 112.05

110.68

 123 103 1.5
46-8M 46 117.14

115.77

 123 103 1.5
48-8M 48 122.23

120.86

 131 111 1.5
50-8M 50 127.32

125.95

 138 118 1.5
64-8M 64 162.97

161.60

 　 　 　
72-8M 72 183.35

181.98

 　 　 　
80-8M 80 203.72

202.35

 　 　 　
90-8M 90 229.18

227.81

 　 　 　
112-8M 112 285.21

283.84