Module
3
Teeth
20
Teeth1
40
i ratio
1:2
A centre distance
73.3
A1
56.1
B
15
Tolerance (B)
H7
B1
25
Tolerance (B1)
H7
b tooth width
25
d
60
d1
120
da external diameter
65
da1
122.2
H
36.5
H1
38.9
L
33
L1
35
N
40
N1
60
n
10
n1
20