Quality Transmission is the largest North American supplier of off-the-shelf metric gearing. KHK Stock Gears are proudly produced by Kohara Gear Industry of Saitama Japan and stocked in North America by Quality Transmission Components



Specifications
Precision grade JIS Grade N8 (JIS B 1702-1:1998)
JIS Grade 4 (JIS B 1702:1976)		 Core hardness Less than HB194
Gear teeth Standard full depth Surface hardness
Pressure angle 20 Surface treatment Black oxide
Material S45C (Carbon steel) Surface finish Cut
Heat treatment - Datum reference
surface for gear cutting		 Bore

S1

CP 2.5 (m0.7958)

Catalog No. No. of teeth Bore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length *
Distance traveled
in one turn		 Shape Allowable
torque (kgfm)		 Allowable
torque (Nm)		 Backlash
(mm)		 Weight
(kgf)		 Catalog No.
z AH7 B C D E F G Bending
strength		 Surface
durability		 Bending
strength		 Surface
durability
SSCP2.5-20
[ DXF|DWG | 3D CAD]
SSCP2.5-25
[ DXF|DWG | 3D CAD]
SSCP2.5-30
[ DXF|DWG | 3D CAD]
SSCP2.5-40
[ DXF|DWG | 3D CAD]
 20

25

30

40

 6

8

8

10

 13

17

21

28

 15.92

19.89

23.87

31.83

 17.51

21.49

25.46

33.42

 10

10

10

10

 10

10

10

10

 20

20

20

20

 50

62.5

75

100

 S1

S1

S1

S1

 0.3709

0.5104

0.6546

0.951

 0.0202

0.033

0.0494

0.0911

 3.637

5.005

6.419

9.326

 0.1981

0.3236

0.4844

0.8934

 0.060.20

0.080.22

0.080.22

0.080.22

 0.02

0.04

0.06

0.11

 SSCP2.5-20

SSCP2.5-25

SSCP2.5-30

SSCP2.5-40

CP 5 (m1.5915)

Catalog No. No. of teeth Bore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length *
Distance traveled
in one turn		 Shape Allowable
torque (kgfm)		 Allowable
torque (Nm)		 Backlash
(mm)		 Weight
(kgf)		 Catalog No.
z AH7 B C D E F G Bending
strength		 Surface
durability		 Bending
strength		 Surface
durability
SSCP5-20
[ DXF|DWG | 3D CAD]
SSCP5-25
[ DXF|DWG | 3D CAD]
SSCP5-30
[ DXF|DWG | 3D CAD]
SSCP5-40
[ DXF|DWG | 3D CAD]
 20

25

30

40

 8

10

10

12

 25

32

38

45

 31.83

39.78

47.74

63.66

 35.01

42.97

50.92

66.84

 15

15

15

15

 15

15

15

15

 30

30

30

30

 100

125

150

200

 S1

S1

S1

S1

 2.226

3.063

3.928

5.711

 0.1343

0.2191

0.3218

0.5888

 21.83

30.04

38.52

56.01

 1.317

2.149

3.156

5.774

 0.090.24

0.100.26

0.100.26

0.100.26

 0.16

0.22

0.4

0.54

 SSCP5-20

SSCP5-25

SSCP5-30

SSCP5-40

CP 10 (m3.1831)

Catalog No. No. of teeth Bore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length *
Distance traveled
in one turn		 Shape Allowable
torque (kgfm)		 Allowable
torque (Nm)		 Backlash
(mm)		 Weight
(kgf)		 Catalog No.
z AH7 B C D E F G Bending
strength		 Surface
durability		 Bending
strength		 Surface
durability
SSCP10-20
[ DXF|DWG | 3D CAD]
SSCP10-25
[ DXF|DWG | 3D CAD]
SSCP10-30
[ DXF|DWG | 3D CAD]
SSCP10-40
[ DXF|DWG | 3D CAD] 		20

25

30

40

 15

20

20

20

 50

60

75

80

 63.66

79.57

95.49

127.32

 70.03

85.93

101.86

133.69

 30

30

30

30

 20

20

20

20

 50

50

50

50

 200

250

300

400

 S1

S1

S1

S1

 17.81

24.51

31.43

45.68		 1.157

1.883

2.767

5.094

 174.7

240.4

308.2

448

 11.35

18.47

27.13

49.95

 0.140.34

0.160.37

0.160.37

0.160.37

 1.1

1.7

2.5

3.7

 SSCP10-20

SSCP10-25

SSCP10-30

SSCP10-40

CP 15 (m4.7746)

Catalog No. No. of teeth Bore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length *
Distance traveled
in one turn		 Shape Allowable
torque (kgfm)		 Allowable
torque (Nm)		 Backlash
(mm)		 Weight
(kgf)		 Catalog No.
z AH7 B C D E F G Bending
strength		 Surface
durability		 Bending
strength		 Surface
durability
SSCP15-20
[ DXF|DWG | 3D CAD]
SSCP15-25
[ DXF|DWG | 3D CAD]
SSCP15-30
[ DXF|DWG | 3D CAD]
 20

25

30

 22

25

25

 75

100

110

 95.49

119.37

143.24

 105.04

128.92

152.79

 50

50

50

 27

27

27

 77

77

77

 300

375

450

 S1

S1

S1

 66.79

91.91

117.9

 4.474

7.357

10.92

 655

901.3

1156

 43.87

72.15

107.1

 0.190.46

0.210.49

0.210.49

 3.5

5.8

8.9

 SSCP15-20

SSCP15-25

SSCP15-30

CP 20 (m6.3662)

Catalog No. No. of teeth Bore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length *
Distance traveled
in one turn		 Shape Allowable
torque (kgfm)		 Allowable
torque (Nm)		 Backlash
(mm)		 Weight
(kgf)		 Catalog No.
z AH7 B C D E F G Bending
strength		 Surface
durability		 Bending
strength		 Surface
durability
SSCP20-20
[ DXF|DWG | 3D CAD]
SSCP20-25
[ DXF|DWG | 3D CAD]
SSCP20-30
[ DXF|DWG | 3D CAD]
 20

 25

 30

 25

 30

 30

 100

 130

 150

 127.32

 159.16

 190.99

 140.06

 171.89

 203.72

 60

 60

 60

 30

 30

 30

 90

 90

 90

 400

 500

 600

 S1

 S1

 S1

 142.5

 196.1

 251.4

 10.01

 16.41

 24.18

 1397

 1923

 2465

 98.16

 160.9

 237.1

 0.210.52

 0.230.56

 0.230.56

 7.5

 12

 17

 SSCP20-20

 SSCP20-25

 SSCP20-30

CAUTION: SSCP and SS spur gears are similar in appearance and dimensions. Please check the identifying marking before use.
NOTE: The mark* denotes the distance in mm that a pinion travels on the rack in one revolution.
NOTE: The allowable torques shown in the table are calculated values according to JGMA Standards 401-01 and 402-01.The 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 when meshed with SRCP racks. All dimensions shown in the above table(s) are listed in millimeters unless otherwise specified.
USEFUL HINT: Although induction hardening could increase the strength of gears, the pitch error may increase. Therefore, induction hardening is not recommended for positioning applications of these gears.

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