Tooth dimensions for standardized stub gears

1 Metric system

Module m Transverse pitch Pn Theoretical tooth thickness Sn Addendum ha Tooth depth h
1,75/1,50
2,00/1,75
2,25/1,75
2,50/2,00
2,75/2,00
3,00/2,25
3,25/2,50
3,50/2,50
3,75/2,75
4,00/3,00
4,25/3,25
4,50/3,25
4,75/3,50
5,00/3,75
5,25/4,00
5,50/4,00
5,75/4,50
6,00/4,50
5,50
6,28
7,07
7,86
8,64
9,42
10,21
11,00
11,78
12,57
13,35
14,14
14,92
15,71
16,48
17,28
18,05
18,85
2,75
3,14
3,53
3,93
4,32
4,71
5,10
5,50
5,89
6,28
6,68
7,07
7,46
7,85
8,24
8,64
9,02
9,42
1,50
1,75
1,75
2,00
2,00
2,25
2,50
2,50
2,75
3,00
3,25
3,25
3,50
3,75
4,00
4,00
4,50
4,50
3,38
3,94
3,94
4,50
4,50
5,06
5,63
5,63
6,18
6,74
7,32
7,32
7,87
8,45
9,00
9,00
10,13
10,13

2 Anglo-Saxon system

Diametral pitch DP Transverse pitch Pn Theoretical tooth thickness Sn Addendum ha Tooth depth h
DP 4/5
DP 5/7
DP 6/8
DP 7/9
DP 8/10
DP 9/11
DP 10/12
DP 12/14
DP 14/18
DP 16/21
19,949
15,959
13,299
11,399
9,974
8,866
7,980
6,650
5,700
1,587
9,975
7,980
6,650
5,700
4,986
4,432
3,990
3,325
2,850
2,424
5,080
3,630
3,175
2,822
2,540
2,309
2,116
1,813
1,411
1,210
11,430
8,163
7,142
6,350
5,715
5,194
4,762
4,082
3,044
2,720