Module
1.5
Teeth
20
Teeth1
40
i ratio
1:2
A centre distance
42.5
A1
32
B
8
Tolerance (B)
H7
B1
12
Tolerance (B1)
H7
b tooth width
10
d
30
d1
60
da external diameter
32.5
da1
61.1
H
21.9
H1
22.4
L
20
L1
20
N
22
N1
55
n
10.5
n1
12