Module
1
Teeth
15
Teeth1
20
i ratio
1:1.3
A centre distance
15.7
A1
14
B
5
Tolerance (B)
H7
B1
5
Tolerance (B1)
H7
b tooth width
5
d
15
d1
20
da external diameter
16.6
da1
21.2
H
10
H1
10
L
9
L1
8.5
N
13
N1
15
n
5
n1
5