1–136
Ground Spiral Bevel Gears - Module 2 to 4
20° PRESSURE ANGLE
ISO CLASS 6
35° SPIRAL ANGLE
D1
P.D.
D
d1
l2
D
S
l1
A
d
P.D.
l
l
L
A
d
l2
G
B
S13S2YMK20G20L10
S13S2YMK20G30R12
S13S2YMK25G20L12
S13S2YMK25G30R15
S13S2YMK30G20L16
S13S2YMK30G30R16
S13S2YMK40G20L20
S13S2YMK40G30R20
P.D.
d
Bore
H7
Catalog Number
MATERIAL: AISI 1045 Steel, Tooth Surfaces Induction Hardened to HRC 48…53
FINISH: Black Oxide, except Ground Bore and Tooth Surfaces
2
2.5
3
4
10
12
12
15
16
16
20
20
d1
l1
Crown
to
Back
NOTE: R or L in catalog number indicates right- or left-hand direction of helix.
Mod.
20
30
20
30
20
30
20
30
40
60
50
75
60
90
80
120
D
43.55
61.6
54.43
77.09
65.58
92.21
87.34
122.85
S
Face
Width
11
15
17
20
L
Length
24.91
26.6
30.88
33.86
40.17
35.34
48.17
47.49
l
Hub
Proj.
11.67
15
14.17
18
20
17
23.33
25
A
Mtg.
Dist.
45
40
55
50
70
55
90
75
l2
Length
of
Bore
21.34
37.56
27.42
45.61
34.71
57.14
46.89
78.59
16.18
21.2
18.98
26.56
26.86
26.66
32.45
37.14
22
23
28
30
37
31
43
40
B
Face
Angle
37° 40'
60° 43'
37° 41'
61° 01'
38° 45'
59° 20'
38° 25'
58° 52'
No.
of
Teeth
RATIO 2:3
D1
Hub
Dia.
30
35
40
45
45
50
60
70
2
2.5
3
4
12
12
12
15
16
20
20
20
20
40
20
40
20
40
20
40
40
80
50
100
60
120
80
160
44.1
81
55.2
101.27
66.07
121.48
88.5
162.07
15
20
22
28
34
32.2
43.61
39.65
50.63
45.76
66.24
53.68
18
18
22.5
20
27.5
24
35
28
60
45
75
55
90
65
120
80
21.11
48.8
20.53
59.26
29.63
73.78
42.8
102.44
21
26
26.3
31.27
31.52
36.47
42.12
42.07
32
27
40
34
47
38
62
45
29° 58'
65° 20'
30° 18'
65° 50'
29° 50'
65° 03'
30° 47'
65° 30'
RATIO 1:2
32
40
40
50
50
60
60
70
S13S3YMK20G20L12
S13S3YMK20G40R12
S13S3YMK25G20L12
S13S3YMK25G40R15
S13S3YMK30G20L16
S13S3YMK30G40R20
S13S3YMK40G20L20
S13S3YMK40G40R20
2
2.5
3
10
12
12
15
15
20
15
45
15
45
15
45
30
90
37.5
112.5
45
135
34.78
90.67
43.36
113.32
52.08
135.99
15
20
23
29.66
30.29
38.27
38.25
44.98
40.59
14
17
17.5
22
21.33
20
60
40
75
50
90
55
19.15
59.07
20.48
72.82
28.52
88.2
15.8
26.01
19.73
32.47
23.68
33.98
29
26
37
35
44
35
22° 50'
73° 25'
22° 22'
73° 13'
22° 32'
73° 18'
RATIO 1:3
24
40
30
50
38
60
S13S4YMK20G15L10
S13S4YMK20G45R12
S13S4YMK25G15L12
S13S4YMK25G45R15
S13S4YMK30G15L15
S13S4YMK30G45R20
