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 N7 (JIS B 1702-1:1998)
JIS Grade 3 (JIS B 1702:1976)		 Core hardness HB225260
Gear teeth Standard full depth Surface hardness HRC 4853
Pressure angle 20 Surface treatment Black oxide except
ground surfaces
Material S45C Surface finish Ground
Heat treatment Overall Normalizing, tooth
surfaces induction hardened		 Reference surface
datum for gear grinding		 Shaft
(ground portion)

S7

Module 1.5

Catalog No. Module No. of
teeth		 Coefficient of
Profile shift		 Shaft dia.
(Left Side)		 Shaft length
(Left Side)		 Pitch dia. Outside dia. Face
width		 Shaft dia.
(Right Side)		 Shaft length
(Right Side)		 Total length Shape Allowable
torque(kgfm)		 Allowable
torque(Nm)		 Backlash
(mm)		 Weight
(kgf)		 Catalog No.
m z x A B C D E A' F G Bending
strength		 Surface
durability		 Bending
strength		 Surface
durability
SSGS1.5-10
[ DXF| DWG| 3D CAD]
SSGS1.5-11
[ DXF| DWG| 3D CAD]
SSGS1.5-12
[ DXF| DWG| 3D CAD]
SSGS1.5-13
[ DXF| DWG| 3D CAD]		 1.5

1.5

1.5

1.5		 10

11

12

13		 +0.5

+0.5

-

-		 12.2

13.7

13.7

15.2		 25

25

25

25		 15

16.5

18

19.5		 19.35

20.85

21

22.5		 15

15

15

15		 12.2

13.7

13.7

15.2		 100

100

100

100		 140

140

140

140		 S7

S7

S7

S7		 1.231

1.404

1.152

1.322		 0.3224

0.3983

0.3226

0.3894		 12.07

13.77

11.3

12.96		 3.162

3.906

3.164

3.819		 0.080.16

0.080.16

0.080.16

0.080.16		 0.14

0.17

0.17

0.21		 SSGS1.5-10

SSGS1.5-11

SSGS1.5-12

SSGS1.5-13

Module 2

Catalog No. Module No. of
teeth		 Coefficient of
Profile shift		 Shaft dia.
(Left Side)		 Shaft length
(Left Side)		 Pitch dia. Outside dia. Face
width		 Shaft dia.
(Right Side)		 Shaft length
(Right Side)		 Total length Shape Allowable
torque(kgfm)		 Allowable
torque(Nm)		 Backlash
(mm)		 Weight
(kgf)		 Catalog No.
m z x A B C D E A' F G Bending
strength		 Surface
durability		 Bending
strength		 Surface
durability
SSGS2-10
[ DXF| DWG| 3D CAD]
SSGS2-11
[ DXF| DWG| 3D CAD]
SSGS2-12
[ DXF| DWG| 3D CAD]
SSGS2-13
[ DXF| DWG| 3D CAD]		 2

2

2

2		 10

11

12

13		 +0.5

+0.5

-

-		 16.2

18.2

18.2

20.2		 30

30

30

30		 20

22

24

26		 25.8

27.8

28

30		 20

20

20

20		 16.2

18.2

18.2

20.2		 120

120

120

120		 170

170

170

170		 S7

S7

S7

S7		 2.917

3.329

2.732

3.134		 0.7807

0.9638

0.7806

0.9415		 28.61

32.65

26.79

30.73		 7.656

9.452

7.655

9.233		 0.080.16

0.080.16

0.080.16

0.080.16		 0.3

0.38

0.38

0.46		 SSGS2-10

SSGS2-11

SSGS2-12

SSGS2-13

Module 2.5

Catalog No. Module No. of
teeth		 Coefficient of
Profile shift		 Shaft dia.
(Left Side)		 Shaft length
(Left Side)		 Pitch dia. Outside dia. Face
width		 Shaft dia.
(Right Side)		 Shaft length
(Right Side)		 Total length Shape Allowable
torque(kgfm)		 Allowable
torque(Nm)		 Backlash
(mm)		 Weight
(kgf)		 Catalog No.
m z x A B C D E A' F G Bending
strength		 Surface
durability		 Bending
strength		 Surface
durability
SSGS2.5-10
[ DXF| DWG| 3D CAD]
SSGS2.5-11
[ DXF| DWG| 3D CAD]
SSGS2.5-12
[ DXF| DWG| 3D CAD]
SSGS2.5-13
[ DXF| DWG| 3D CAD]		 2.5

2.5

2.5

2.5		 10

11

12

13		 +0.5

+0.5

-

-		 20.2

22.7

22.7

25.2		 35

35

35

35		 25

27.5

30

32.5		 32.25

34.75

35

37.5		 25

25

25

25		 20.2

22.7

22.7

25.2		 135

135

135

135		 195

195

195

195		 S7

S7

S7

S7		 5.697

6.502

5.335

5.1		 1.548

1.91

1.547

1.555		 55.87

63.76

52.32

50.01		 15.18

18.73

15.17

15.25		 0.080.16

0.080.16

0.080.16

0.080.16		 0.54

0.68

0.68

0.83		 SSGS2.5-10

SSGS2.5-11

SSGS2.5-12

SSGS2.5-13

Module 3

Catalog No. Module No. of
teeth		 Coefficient of
Profile shift		 Shaft dia.
(Left Side)		 Shaft length
(Left Side)		 Pitch dia. Outside dia. Face
width		 Shaft dia.
(Right Side)		 Shaft length
(Right Side)		 Total length Shape Allowable
torque(kgfm)		 Allowable
torque(Nm)		 Backlash
(mm)		 Weight
(kgf)		 Catalog No.
m z x A B C D E A' F G Bending
strength		 Surface
durability		 Bending
strength		 Surface
durability
SSGS3-10
[ DXF| DWG| 3D CAD]
SSGS3-11
[ DXF| DWG| 3D CAD]
SSGS3-12
[ DXF| DWG| 3D CAD]
SSGS3-13
[ DXF| DWG| 3D CAD]		 3

3

3

3		 10

11

12

13		 +0.5

+0.5

-

-		 24.2

27.2

27.2

30.2		 40

40

40

40		 30

33

36

39		 38.7

41.7

42

45		 30

30

30

30		 24.2

27.2

27.2

30.2		 150

150

150

150		 220

220

220

220		 S7

S7

S7

S7		 8.204

9.363

7.683

8.813		 2.255

2.788

2.258

2.727		 80.45

91.82

75.34

86.43		 22.11

27.34

22.14

26.74		 0.080.16

0.080.16

0.080.16

0.080.16		 0.89

1.1

1.1

1.4		 SSGS3-10

SSGS3-11

SSGS3-12

SSGS3-13
 

CAUTION: Since the 10 tooth and 11 tooth gears are profile shifted (x=+0.5), the center distance values must be obtained by using the center distance formula for profile shifted spur gears.

The following tables present the center distances when a profile shifted module 1 spur gear (x=+0.5) with 10 or 11 teeth meshes with standard stock spur gear (x=0). Multiply the values shown by the module of gears for modules other than module 1.

NOTE: 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 of a pair of identical gears in mesh.

Center distance when gear has 12 to 30 teeth
(mm)
z (x=0) Pinion
z (x=+0.5)
10 11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
 11.4410
11.9428
12.4446
12.9462
13.4477
13.9492
14.4505
14.95-13
15.4530
15.9542
16.4553
16.9564
17.4574
17.9583
18.4592
18.9601
19.4610
19.9618
20.4625
 11.9428
12.4446
12.9462
13.4477
13.9492
14.4505
14.9518
15.4530
15.9542
16.4553
16.9564
17.4574
17.9583
18.4592
18.9601
19.4610
19.9618
20.4625
20.9633
Center distance when gear has 32 to 62 teeth
(mm)
z (x=0) Pinion
z (x=+0.5)
10 11
32
34
35
36
38
40
42
44
45
46
48
50
52
54
55
56
58
60
62		 21.4640
22.4653
22.9660
23.4666
24.4677
25.4688
26.4698
27.4707
27.9712
28.4716
29.4725
30.4733
31.4740
32.4747
32.9750
33.4754
34.4760
35.4766
36.4772		 21.9647
22.9660
23.4666
23.9671
24.9683
25.9693
26.9703
27.9712
28.4716
28.9721
29.9729
30.9736
31.9744
32.9750
33.4754
33.9757
34.9763
35.9769
36.9774
Center distance when gear has 64 to 200 teeth
(mm)
z (x=0) Pinion
z (x=+0.5)
10 11
64
65
66
68
70
72
75
76
80
84
85
88
90
95
100
120
150
200		 37.4777
37.9780
38.4782
39.4787
40.4792
41.4796
42.9803
43.4805
45.4813
47.4820
47.9822
49.4826
50.4830
52.9837
55.4844
65.4866
80.4890
105.4915 		37.9780
38.4782
38.9785
39.9790
40.9794
41.9799
43.4805
43.9807
45.9814
47.9822
48.4823
49.9828
50.9831
53.4838
55.9845
65.9867
80.9890
105.9915

Formula for determining the assembly distance of profile shifted gears and mating gear rack


ax : Mounting distance
Ho : Height to the pitch line of rack from the base
m : Module
z : Number of teeth on the gear
x : Coefficient of profile shift

 

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