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 N12 (JIS B 1702-1:1998)
JIS Grade 8 (JIS B 1702:1976)		 Core hardness HRR110120
Gear teeth Standard full depth Surface hardness
Pressure angle 20 Surface treatment -
Material Duracon (M90-44) Acetal Surface finish Injection molded
Heat treatment - Datum reference
surface for gear forming		 Bore

S8 S9

Module 0.5

Catalog No. Module No. of teeth Bore C'bore Hub dia. Web I.D. Pitch dia. Outside dia Face width Hub width Total length Web thickness Web O.D. Depth of
counterbore		 Shape Allowable
torque(kgfm)		 Allowable
torque(Nm)		 Backlash
(mm)		 Weight
(gf)		 Catalog No.
m z A A' B B' C D E F G H I J Bending
strength		 Bending
strength
DS0.5-12
[ DXF| DWG| 3D CAD]
DS0.5-15
[ DXF| DWG| 3D CAD]
DS0.5-16
[ DXF| DWG| 3D CAD]
DS0.5-18
[ DXF| DWG| 3D CAD]
DS0.5-20
[ DXF| DWG| 3D CAD]		 0.5

0.5

0.5

0.5

0.5		 12

15

16

18

20		 2

2

3

3

4		 4

5

6

7

-		 4.5

4.5

6

6

8		 -

-

-

-

5		 6

7.5

8

9

10		 7

8.5

9

10

11		 3

3

3

3

3		 4

4

4

4

4		 7

7

7

7

7		 -

-

-

-

2.4		 -

-

-

-

8		 0.6

0.6

0.6

0.6

0.6		 S8

S8

S8

S8

S9		 0.0096

0.014

0.0155

0.0181

0.0209		 0.0941

0.1373

0.152

0.1775

0.205		 0.060.18

0.060.18

0.060.18

0.060.18

0.060.18		 1

1

1

1

1		 DS0.5-12

DS0.5-15

DS0.5-16

DS0.5-18

DS0.5-20
DS0.5-24
[ DXF| DWG| 3D CAD]
DS0.5-25
[ DXF| DWG| 3D CAD]
DS0.5-28
[ DXF| DWG| 3D CAD]
DS0.5-30
[ DXF| DWG| 3D CAD]
DS0.5-32
[ DXF| DWG| 3D CAD]		 0.5

0.5

0.5

0.5

0.5		 24

25

28

30

32		 4

4

4

5

5		 -

-

-

-

-		 8

8

8

10

10		 5

6

6

7

7		 12

12.5

14

15

16		 13

13.5

15

16

17		 3

3

3

3

3		 4

4

4

4

4		 7

7

7

7

7		 1.8

1.8

1.8

1.8

1.8		 9.5

10

12

12

13		 0.6

0.6

0.6

0.6

0.6		 S9

S9

S9

S9

S9		 0.0264

0.0278

0.0321

0.0349

0.0379		 0.2589

0.2726

0.3148

0.3422

0.3717		 0.060.18

0.060.18

0.060.18

0.060.18

0.060.18		 1

1

1

1

1		 DS0.5-24

DS0.5-25

DS0.5-28

DS0.5-30

DS0.5-32
DS0.5-35
[ DXF| DWG| 3D CAD]
DS0.5-36
[ DXF| DWG| 3D CAD]
DS0.5-40
[ DXF| DWG| 3D CAD]
DS0.5-45
[ DXF| DWG| 3D CAD]
DS0.5-48
[ DXF| DWG| 3D CAD]		 0.5

0.5

0.5

0.5

0.5		 35

36

40

45

48		 5

5

5

5

5		 -

-

-

-

-		 10

10

12

12

12		 7

7

8

8

8		 17.5

18

20

22.5

24		 18.5

19

21

23.5

25		 3

3

3

3

3		 4

4

4

4

4		 7

7

7

7

7		 1.8

1.8

1.8

1.8

1.8		 14.5

15

17

19

21		 0.6

0.6

0.6

0.6

0.6		 S9

S9

S9

S9

S9		 0.0426

0.0442

0.0504

0.0583

0.0632		 0.4178

0.4334

0.4943

0.5717

0.6198		 0.060.18

0.060.18

0.060.18

0.080.22

0.080.22		 1

1

2

2

2		 DS0.5-35

DS0.5-36

DS0.5-40

DS0.5-45

DS0.5-48
DS0.5-50
[ DXF| DWG| 3D CAD]
DS0.5-56
[ DXF| DWG| 3D CAD]
DS0.5-60
[ DXF| DWG| 3D CAD]
DS0.5-64
[ DXF| DWG| 3D CAD]
DS0.5-70
[ DXF| DWG| 3D CAD]		 0.5

0.5

0.5

0.5

0.5		 50

56

60

64

70		 5

6

6

6

6		 -

-

-

-

-		 12

14

14

14

14		 8

10

10

10

10		 25

28

30

32

35		 26

29

31

33

36		 3

3

3

3

3		 4

5

5

5

5		 7

8

8

8

8		 1.8

1.8

1.8

1.8

1.8		 22

24.5

26.5

28.5

31.5		 0.6

0.6

0.6

0.6

0.6		 S9

S9

S9

S9

S9		 0.0666

0.0757

0.082

0.0882

0.0976		 0.6531

0.7424

0.8041

0.8649

0.9571		 0.080.22

0.080.22

0.080.22

0.080.22

0.080.22		 2

3

3

3

4		 DS0.5-50

DS0.5-56

DS0.5-60

DS0.5-64

DS0.5-70
DS0.5-72
[ DXF| DWG| 3D CAD]
DS0.5-80
[ DXF| DWG| 3D CAD]		 0.5

0.5		 72

80		 6

6		 -

-		 14

14		 10

10		 36

40		 37

41		 3

3		 5

5		 8

8		 1.8

1.8		 32.5

36.5		 0.6

0.6		 S9

S9		 0.1008

0.1133		 0.9885

1.111		 0.080.22

0.080.22		 4

5		 DS0.5-72

DS0.5-80

Module 0.8

Catalog No. Module No. of teeth Bore Hub dia. Web I.D. Pitch dia. Outside dia Face width Hub width Total length Web thickness Web O.D. Depth of
counterbore		 Shape Allowable
torque(kgfm)		 Allowable
torque(Nm)		 Backlash
(mm)		 Weight
(gf)		 Catalog No.
m z A B B' C D E F G H I J Bending
strength		 Bending
strength
DS0.8-12
[ DXF| DWG| 3D CAD]
DS0.8-15
[ DXF| DWG| 3D CAD]
DS0.8-16
[ DXF| DWG| 3D CAD]
DS0.8-18
[ DXF| DWG| 3D CAD]
DS0.8-20
[ DXF| DWG| 3D CAD]		 0.8

0.8

0.8

0.8

0.8		 12

15

16

18

20		 3

3

4

4

5		 6

6

8

8

10		 4

5

6

6

8		 9.6

12

12.8

14.4

16		 11.2

13.6

14.4

16

17.6		 4

4

4

4

4		 5

5

5

5

5		 9

9

9

9

9		 2

2

2

2

2		 6.7

8.8

9.2

10.7

12.7		 1

1

1

1

1		 S9

S9

S9

S9

S9		 0.029

0.0424

0.0469

0.0547

0.0634		 0.2844

0.4158

0.4599

0.5364

0.6217		 0.080.22

0.080.22

0.080.22

0.080.22

0.080.22		 1

1

1

1

2		 DS0.8-12

DS0.8-15

DS0.8-16

DS0.8-18

DS0.8-20
DS0.8-24
[ DXF| DWG| 3D CAD]
DS0.8-25
[ DXF| DWG| 3D CAD]
DS0.8-28
[ DXF| DWG| 3D CAD]
DS0.8-30
[ DXF| DWG| 3D CAD]
DS0.8-32
[ DXF| DWG| 3D CAD]		 0.8

0.8

0.8

0.8

0.8		 24

25

28

30

32		 5

5

5

6

6		 10

10

10

12

12		 8

8

8

10

10		 19.2

20

22.4

24

25.6		 20.8

21.6

24

25.6

27.2		 4

4

4

4

4		 5

5

5

5

5		 9

9

9

9

9		 2

2

2

2

2		 15.5

15.5

19

20

21.7		 2

2

2

2

2		 S9

S9

S9

S9

S9		 0.0799

0.0844

0.0973

0.1058

0.1149		 0.7835

0.8277

0.9542

1.038

1.127		 0.080.22

0.080.22

0.10.24

0.10.24

0.10.24		 2

2

3

3

3		 DS0.8-24

DS0.8-25

DS0.8-28

DS0.8-30

DS0.8-32
DS0.8-35
[ DXF| DWG| 3D CAD]
DS0.8-36
[ DXF| DWG| 3D CAD]
DS0.8-40
[ DXF| DWG| 3D CAD]
DS0.8-45
[ DXF| DWG| 3D CAD]
DS0.8-48
[ DXF| DWG| 3D CAD]		 0.8

0.8

0.8

0.8

0.8		 35

36

40

45

48		 6

6

6

6

6		 12

12

12

12

14.5		 10

10

10

10

11.7		 28

28.8

32

36

38.4		 29.6

30.4

33.6

37.6

40		 4

4

4

4

4		 5

5

5

5

6		 9

9

9

9

10		 2

2

2

2

2		 24

25

28.3

32

34.3		 1

1

1

1

1		 S9

S9

S9

S9

S9		 0.129

0.1339

0.1528

0.1767

0.1915		 1.265

1.313

1.498

1.733

1.878		 0.10.24

0.10.24

0.10.24

0.10.24

0.10.24		 3

3

4

4

5		 DS0.8-35

DS0.8-36

DS0.8-40

DS0.8-45

DS0.8-48
DS0.8-50
[ DXF| DWG| 3D CAD]
DS0.8-56
[ DXF| DWG| 3D CAD]
DS0.8-60
[ DXF| DWG| 3D CAD]
DS0.8-64
[ DXF| DWG| 3D CAD]
DS0.8-70
[ DXF| DWG| 3D CAD]		 0.8

0.8

0.8

0.8

0.8		 50

56

60

64

70		 6

6

6

6

6		 14.5

14.5

14.5

15.5

15.5		 11.7

11.7

11.7

11.7

11.7		 40

44.8

48

51.2

56		 41.6

46.4

49.6

52.8

57.6		 4

4

4

4

4		 6

6

6

6

6		 10

10

10

10

10		 2

2

2

2

2		 36

41

44

45.5

52		 1

1

1

1

1		 S9

S9

S9

S9

S9		 0.2016

0.2294

0.2484

0.267

0.2955		 1.977

2.25

2.436

2.618

2.898		 0.10.24

0.10.24

0.10.24

0.120.26

0.120.26		 6

7

8

8

9		 DS0.8-50

DS0.8-56

DS0.8-60

DS0.8-64

DS0.8-70
DS0.8-72
[ DXF| DWG| 3D CAD]
DS0.8-80
[ DXF| DWG| 3D CAD]		 0.8

0.8		 72

80		 6

6		 15.5

15.5		 11.7

11.7		 57.6

64		 59.2

65.6		 4

4		 6

6		 10

10		 2

2		 54

60		 1

1		 S9

S9		 0.3051

0.3428		 2.992

3.362		 0.120.26

0.120.26		 10

12		 DS0.8-72

DS0.8-80

CAUTION: The bore tolerance is generally -0.05 to -0.1 but may be a positive value at the central portion of the hole.

CAUTION: Remachining the bore is not recommended since reworking material may expose voids.

NOTE: The allowable torques shown in the table are calculated using the Lewis formula. The backlash values shown are the theoretical values of a pair of identical gears in mesh. All dimensions shown in the above table(s) are listed in millimeters unless otherwise specified.


Tolerances of Injection Molded Products
Dimension Range Tolerance
below 3 +/- 0.2
3 up to 6 +/- 0.25
6 up to 10 +/- 0.3
10 up to 18 +/- 0.35
18 up to 30 +/- 0.4
30 and above +/- 0.5

 

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