Module
2.5
Teeth
15
Teeth1
30
i ratio
1:2
A centre distance
55
A1
45
B
12
Tolerance (B)
H7
B1
16
Tolerance (B1)
H7
b tooth width
15
d
37.5
d1
75
da external diameter
43.5
da1
76.5
H
31.8
H1
33.7
L1
30
N
32.3
N1
45.3
n
16.2
n1
20