Module
2.5
Teeth
18
Teeth1
45
i ratio
1:2.5
A centre distance
74.1
A1
47.4
B
12
Tolerance (B)
H7
B1
25
Tolerance (B1)
H7
b tooth width
20
d
45
d1
112.5
da external diameter
49.5
da1
114
H
37
H1
33.8
L
33
L1
30
N
35
N1
70
n
15.9
n1
15