Metric Gears, Stainless Steel Spur Gears Modules 2.5, 3

Quality Transmission is the largest North American supplier of off-the-shelf metric gearing.

Specifications
Precision grade	JIS Grade N8 (JIS B 1702-1:1998) JIS Grade 4 (JIS B 1702:1976)	Core hardness	less than HB187
Gear teeth	Standard full depth	Surface hardness	less than HB187
Pressure angle	20	Surface treatment	-
Material	SUS303 Stainless Steel	Surface finish	Hobbed
Heat treatment	-	Datum reference surface for gear teeth cutting	Bore


S1	S5

Module 2.5

Catalog No.	Module	No. of teeth	Bore	Hub dia.	Pitch dia.	Outside dia.	Face width	Hub width	Total length	Shape	Allowable torque(kgfm)		Allowable torque(Nm)		Backlash (mm)	Weight (kgf)	Catalog No.
Catalog No.	m	z	A_H7	B	C	D	E	F	G	Shape	Bending strength	Surface durability	Bending strength	Surface durability	Backlash (mm)	Weight (kgf)	Catalog No.
SUS2.5-15 [ DXF\| DWG\| 3D CAD] SUS2.5-16 [ DXF\| DWG\| 3D CAD] SUS2.5-18 [ DXF\| DWG\| 3D CAD] SUS2.5-20 [ DXF\| DWG\| 3D CAD] SUS2.5-22 [ DXF\| DWG\| 3D CAD]	2.5 2.5 2.5 2.5 2.5	15 16 18 20 22	15 15 15 15 15	30 32 38 40 44	37.5 40 45 50 55	42.5 45 50 55 60	25 25 25 25 25	18 18 18 18 18	43 43 43 43 43	S1 S1 S1 S1 S1	3.253 3.604 4.323 5.06 5.812	0.2147 0.2485 0.3239 0.4097 0.5062	31.9 35.34 42.39 49.62 57	2.105 2.437 3.176 4.018 4.964	0.140.28 0.140.28 0.140.28 0.140.28 0.160.34	0.26 0.3 0.41 0.5 0.63	SUS2.5-15 SUS2.5-16 SUS2.5-18 SUS2.5-20 SUS2.5-22
SUS2.5-24 [ DXF\| DWG\| 3D CAD] SUS2.5-25 [ DXF\| DWG\| 3D CAD] SUS2.5-28 [ DXF\| DWG\| 3D CAD] SUS2.5-30 [ DXF\| DWG\| 3D CAD]	2.5 2.5 2.5 2.5	24 25 28 30	15 15 15 15	48 50 60 65	60 62.5 70 75	65 67.5 75 80	25 25 25 25	18 18 18 18	43 43 43 43	S1 S1 S1 S1	6.577 6.963 8.137 8.929	0.6133 0.6708 0.8503 0.9836	64.5 68.28 79.8 87.56	6.014 6.578 8.339 9.646	0.160.34 0.160.34 0.160.34 0.160.34	0.75 0.82 1.1 1.3	SUS2.5-24 SUS2.5-25 SUS2.5-28 SUS2.5-30

Catalog No. Module No. of teeth Bore Pitch dia. Outside dia. Face width Total length Shape Allowable
torque(kgfm) Allowable
torque(Nm) Backlash
(mm) Weight
(kgf) Catalog No.

m z A_H7 C D E G Bending
strength Surface
durability Bending
strength Surface
durability

SUSA2.5-32
[ DXF| DWG| 3D CAD]
SUSA2.5-35
[ DXF| DWG| 3D CAD]
SUSA2.5-36
[ DXF| DWG| 3D CAD]
SUSA2.5-40
[ DXF| DWG| 3D CAD]
SUSA2.5-42
[ DXF| DWG| 3D CAD] 2.5

2.5

2.5

2.5

2.5 32

35

36

40

42 15

15

15

20

20 80

87.5

90

100

105 85

92.5

95

105

110 25

25

25

25

25 25

25

25

25

25 S5

S5

S5

S5

S5 9.728

10.94

11.34

12.98

13.8 1.128

1.363

1.446

1.805

2.001 95.4

107.3

111.2

127.3

135.3 11.06

13.37

14.18

17.7

19.62 0.160.34

0.160.34

0.160.34

0.160.34

0.20.4 0.95

1.1

1.2

1.5

1.7 SUSA2.5-32

SUSA2.5-35

SUSA2.5-36

SUSA2.5-40

SUSA2.5-42

SUSA2.5-45
[ DXF| DWG| 3D CAD]
SUSA2.5-48
[ DXF| DWG| 3D CAD]
SUSA2.5-50
[ DXF| DWG| 3D CAD]
SUSA2.5-55
[ DXF| DWG| 3D CAD]
SUSA2.5-56
[ DXF| DWG| 3D CAD] 2.5

2.5

2.5

2.5

2.5 45

48

50

55

56 20

20

20

20

20 112.5

120

125

137.5

140 117.5

125

130

142.5

145 25

25

25

25

25 25

25

25

25

25 S5

S5

S5

S5

S5 15.04

16.29

17.13

19.22

19.64 2.313

2.656

2.899

3.555

3.695 147.5

159.7

168

188.5

192.6 22.68

26.05

28.43

34.86

36.24 0.20.4

0.20.4

0.20.4

0.20.4

0.20.4 1.9

2.2

2.3

2.9

3 SUSA2.5-45

SUSA2.5-48

SUSA2.5-50

SUSA2.5-55

SUSA2.5-56

SUSA2.5-60
[ DXF| DWG| 3D CAD]
SUSA2.5-64
[ DXF| DWG| 3D CAD] 2.5

2.5 60

64 20

20 150

160 155

165 25

25 25

25 S5

S5 21.33

23.03 4.282

4.913 209.2

225.8 41.99

48.18 0.20.4

0.20.4 3.4

3.9 SUSA2.5-60

SUSA2.5-64

Catalog No.	Module	No. of teeth	Bore	Pitch dia.	Outside dia.	Face width	Total length	Shape	Allowable torque(kgfm)	Allowable torque(Nm)	Backlash (mm)	Weight (kgf)	Catalog No.
m	z	A_H7	C	D	E	G	Bending strength	Surface durability	Bending strength	Surface durability
SUSA2.5-32 [ DXF\| DWG\| 3D CAD] SUSA2.5-35 [ DXF\| DWG\| 3D CAD] SUSA2.5-36 [ DXF\| DWG\| 3D CAD] SUSA2.5-40 [ DXF\| DWG\| 3D CAD] SUSA2.5-42 [ DXF\| DWG\| 3D CAD]	2.5 2.5 2.5 2.5 2.5	32 35 36 40 42	15 15 15 20 20	80 87.5 90 100 105	85 92.5 95 105 110	25 25 25 25 25	25 25 25 25 25	S5 S5 S5 S5 S5	9.728 10.94 11.34 12.98 13.8	1.128 1.363 1.446 1.805 2.001	95.4 107.3 111.2 127.3 135.3	11.06 13.37 14.18 17.7 19.62	0.160.34 0.160.34 0.160.34 0.160.34 0.20.4	0.95 1.1 1.2 1.5 1.7	SUSA2.5-32 SUSA2.5-35 SUSA2.5-36 SUSA2.5-40 SUSA2.5-42
SUSA2.5-45 [ DXF\| DWG\| 3D CAD] SUSA2.5-48 [ DXF\| DWG\| 3D CAD] SUSA2.5-50 [ DXF\| DWG\| 3D CAD] SUSA2.5-55 [ DXF\| DWG\| 3D CAD] SUSA2.5-56 [ DXF\| DWG\| 3D CAD]	2.5 2.5 2.5 2.5 2.5	45 48 50 55 56	20 20 20 20 20	112.5 120 125 137.5 140	117.5 125 130 142.5 145	25 25 25 25 25	25 25 25 25 25	S5 S5 S5 S5 S5	15.04 16.29 17.13 19.22 19.64	2.313 2.656 2.899 3.555 3.695	147.5 159.7 168 188.5 192.6	22.68 26.05 28.43 34.86 36.24	0.20.4 0.20.4 0.20.4 0.20.4 0.20.4	1.9 2.2 2.3 2.9 3	SUSA2.5-45 SUSA2.5-48 SUSA2.5-50 SUSA2.5-55 SUSA2.5-56
SUSA2.5-60 [ DXF\| DWG\| 3D CAD] SUSA2.5-64 [ DXF\| DWG\| 3D CAD]	2.5 2.5	60 64	20 20	150 160	155 165	25 25	25 25	S5 S5	21.33 23.03	4.282 4.913	209.2 225.8	41.99 48.18	0.20.4 0.20.4	3.4 3.9	SUSA2.5-60 SUSA2.5-64

Module 3

Catalog No.	Module	No. of teeth	Bore	Hub dia.	Pitch dia.	Outside dia.	Face width	Hub width	Total length	Shape	Allowable torque(kgfm)		Allowable torque(Nm)		Backlash (mm)	Weight (kgf)	Catalog No.
Catalog No.	m	z	A_H7	B	C	D	E	F	G	Shape	Bending strength	Surface durability	Bending strength	Surface durability	Backlash (mm)	Weight (kgf)	Catalog No.
SUS3-15 [ DXF\| DWG\| 3D CAD] SUS3-16 [ DXF\| DWG\| 3D CAD] SUS3-18 [ DXF\| DWG\| 3D CAD] SUS3-20 [ DXF\| DWG\| 3D CAD] SUS3-22 [ DXF\| DWG\| 3D CAD]	3 3 3 3 3	15 16 18 20 22	15 15 15 15 15	36 38 40 50 54	45 48 54 60 66	51 54 60 66 72	30 30 30 30 30	20 20 20 20 20	50 50 50 50 50	S1 S1 S1 S1 S1	5.622 6.228 7.47 8.744 10.04	0.3785 0.4379 0.5703 0.7209 0.8901	55.13 61.08 73.25 85.75 98.46	3.712 4.294 5.593 7.07 8.729	0.160.32 0.160.32 0.160.32 0.160.32 0.180.38	0.47 0.54 0.67 0.97 1.1	SUS3-15 SUS3-16 SUS3-18 SUS3-20 SUS3-22
SUS3-24 [ DXF\| DWG\| 3D CAD] SUS3-25 [ DXF\| DWG\| 3D CAD] SUS3-28 [ DXF\| DWG\| 3D CAD] SUS3-30 [ DXF\| DWG\| 3D CAD]	3 3 3 3	24 25 28 30	15 20 20 20	58 60 70 75	72 75 84 90	78 81 90 96	30 30 30 30	20 20 20 20	50 50 50 50	S1 S1 S1 S1	11.36 12.03 14.06 15.43	1.078 1.18 1.5 1.735	111.4 118 137.9 151.3	10.57 11.57 14.71 17.01	0.180.38 0.180.38 0.180.38 0.180.38	1.3 1.4 1.8 2.1	SUS3-24 SUS3-25 SUS3-28 SUS3-30

Catalog No. Module No. of teeth Bore Pitch dia. Outside dia. Face width Total length Shape Allowable

torque(kgfm) Allowable
torque(Nm) Backlash
(mm) Weight
(kgf) Catalog No.

m z A_H7 C D E G Bending
strength Surface
durability Bending
strength Surface
durability

SUSA3-32
[ DXF| DWG| 3D CAD]
SUSA3-35
[ DXF| DWG| 3D CAD]
SUSA3-36
[ DXF| DWG| 3D CAD]
SUSA3-40
[ DXF| DWG| 3D CAD]
SUSA3-42
[ DXF| DWG| 3D CAD] 3

3

3

3

3 32

35

36

40

42 20

20

20

25

25 96

105

108

120

126 102

111

114

126

132 30

30

30

30

30 30

30

30

30

30 S5

S5

S5

S5

S5 16.81

18.9

19.6

22.43

23.85 1.988

2.401

2.547

3.187

3.539 164.8

185.3

192.2

220

233.9 19.5

23.55

24.98

31.25

34.71 0.180.38

0.180.38

0.180.38

0.180.38

0.220.44 1.6

2

2.1

2.5

2.9 SUSA3-32

SUSA3-35

SUSA3-36

SUSA3-40

SUSA3-42

SUSA3-45
[ DXF| DWG| 3D CAD]
SUSA3-48
[ DXF| DWG| 3D CAD]
SUSA3-50
[ DXF| DWG| 3D CAD]
SUSA3-55
[ DXF| DWG| 3D CAD]
SUSA3-56
[ DXF| DWG| 3D CAD] 3

3

3

3

3 45

48

50

55

56 25

25

25

25

25 135

144

150

165

168 141

150

156

171

174 30

30

30

30

30 30

30

30

30

30 S5

S5

S5

S5

S5 25.99

28.15

29.59

33.22

33.94 4.102

4.709

5.138

6.295

6.541 254.9

276.1

290.2

325.8

332.8 40.23

46.18

50.39

61.73

64.14 0.220.44

0.220.44

0.220.44

0.220.44

0.220.44 3.3

3.8

4

5

5.2 SUSA3-45

SUSA3-48

SUSA3-50

SUSA3-55

SUSA3-56

SUSA3-60
[ DXF| DWG| 3D CAD] 3 60 25 180 186 30 30 S5 36.86 7.575 361.5 74.28 0.220.44 5.9 SUSA3-60

Catalog No.	Module	No. of teeth	Bore	Pitch dia.	Outside dia.	Face width	Total length	Shape	Allowable torque(kgfm)	Allowable torque(Nm)	Backlash (mm)	Weight (kgf)	Catalog No.
m	z	A_H7	C	D	E	G	Bending strength	Surface durability	Bending strength	Surface durability
SUSA3-32 [ DXF\| DWG\| 3D CAD] SUSA3-35 [ DXF\| DWG\| 3D CAD] SUSA3-36 [ DXF\| DWG\| 3D CAD] SUSA3-40 [ DXF\| DWG\| 3D CAD] SUSA3-42 [ DXF\| DWG\| 3D CAD]	3 3 3 3 3	32 35 36 40 42	20 20 20 25 25	96 105 108 120 126	102 111 114 126 132	30 30 30 30 30	30 30 30 30 30	S5 S5 S5 S5 S5	16.81 18.9 19.6 22.43 23.85	1.988 2.401 2.547 3.187 3.539	164.8 185.3 192.2 220 233.9	19.5 23.55 24.98 31.25 34.71	0.180.38 0.180.38 0.180.38 0.180.38 0.220.44	1.6 2 2.1 2.5 2.9	SUSA3-32 SUSA3-35 SUSA3-36 SUSA3-40 SUSA3-42
SUSA3-45 [ DXF\| DWG\| 3D CAD] SUSA3-48 [ DXF\| DWG\| 3D CAD] SUSA3-50 [ DXF\| DWG\| 3D CAD] SUSA3-55 [ DXF\| DWG\| 3D CAD] SUSA3-56 [ DXF\| DWG\| 3D CAD]	3 3 3 3 3	45 48 50 55 56	25 25 25 25 25	135 144 150 165 168	141 150 156 171 174	30 30 30 30 30	30 30 30 30 30	S5 S5 S5 S5 S5	25.99 28.15 29.59 33.22 33.94	4.102 4.709 5.138 6.295 6.541	254.9 276.1 290.2 325.8 332.8	40.23 46.18 50.39 61.73 64.14	0.220.44 0.220.44 0.220.44 0.220.44 0.220.44	3.3 3.8 4 5 5.2	SUSA3-45 SUSA3-48 SUSA3-50 SUSA3-55 SUSA3-56
SUSA3-60 [ DXF\| DWG\| 3D CAD]	3	60	25	180	186	30	30	S5	36.86	7.575	361.5	74.28	0.220.44	5.9	SUSA3-60

Module 4

Catalog No.	Module	No. of teeth	Bore	Hub dia.	Pitch dia.	Outside dia.	Face width	Hub width	Total length	Shape	Allowable torque(kgfm)		Allowable torque(Nm)		Backlash (mm)	Weight (kgf)	Catalog No.
Catalog No.	m	z	A_H7	B	C	D	E	F	G	Shape	Bending strength	Surface durability	Bending strength	Surface durability	Backlash (mm)	Weight (kgf)	Catalog No.
SUS4-15 [ DXF\| DWG\| 3D CAD] SUS4-20 [ DXF\| DWG\| 3D CAD] SUS4-25 [ DXF\| DWG\| 3D CAD] SUS4-30 [ DXF\| DWG\| 3D CAD]	4 4 4 4	15 20 25 30	20 20 20 20	45 65 84 100	60 80 100 120	68 88 108 128	40 40 40 40	25 25 25 25	65 65 65 65	S1 S1 S1 S1	13.33 20.7 28.5 36.6	0.924 1.76 2.89 4.25	130.7 203 280 359	9.06 17.26 28.3 41.7	0.180.38 0.180.38 0.200.44 0.200.44	1.1 2.1 3.4 5	SUS4-15 SUS4-20 SUS4-25 SUS4-30

Catalog No.	Module	No. of teeth	Bore	Pitch dia.	Outside dia.	Face width	Total length	Shape	Allowable torque(kgfm)	Allowable torque(Nm)	Backlash (mm)	Weight (kgf)	Catalog No.
m	z	A_H7	C	D	E	G	Bending strength	Surface durability	Bending strength	Surface durability
SUSA4-40 [ DXF\| DWG\| 3D CAD] SUSA4-50 [ DXF\| DWG\| 3D CAD]	4 4	40 50	30 30	160 200	168 208	40 40	40 40	S5 S5	53.2 58.5	7.86 10.54	521 573	77.1 103.4	0.200.44 0.240.52	6.2 9.7	SUSA4-40 SUSA4-50

CAUTION: We produce SUS stainless steel spur gears in three different body styles; S1, S3 and S5. Please choose the one that best suits your application.

NOTE: Allowable torques shown in the table are the calculated values according to JGMA Standards 401-01 and 402-01.
The backlash values shown in the table are the theoretical values of a pair of identical gears in mesh.

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