Module
0.5
Teeth
20
Teeth1
50
i ratio
1:2.5
A centre distance
17.1
A1
11.5
B
4
Tolerance (B)
H7
B1
4
Tolerance (B1)
H7
b tooth width
3
d
10
d1
25
da external diameter
10.9
da1
25.4
H
7.5
H1
8
L
6.5
L1
7
N
8
N1
14
n
4
n1
5