Module
1.5
Teeth
20
Teeth1
30
i ratio
1:1.5
A centre distance
32.7
A1
31.6
B
8
Tolerance (B)
H7
B1
10
Tolerance (B1)
H7
b tooth width
10
d
30
d1
45
da external diameter
32.3
da1
46.4
H
19
H1
22.9
L
17
L1
20
N
22
N1
30
n
7.6
n1
12