Part No.

8 P 2 8 L 2 1

8 P 2 1 R 2 8

7 P 2 8 L 2 1

7 P 2 1 R 2 8

6 P 3 2 L 2 4

6 P 2 4 R 3 2

5 P 3 2 L 2 4

5 P 2 4 R 3 2

4 P 3 2 L 2 4

4 P 2 4 R 3 2

3 5 P 3 6 L 2 7

3 5 P 2 7 R 3 6

3 P 3 6 L 2 7

3 P 2 7 R 3 6

Figure

19

19

19

19

19

20

19

20

19

21

21

21

21

21

Gear ...Outside Dia. ...Pitch Dia.

3.548 3.500

4.068 4.000

5.379 5.333

6.503 6.400

8.084 8.000

10.434 10.286

12.152 12.000

Pinion ...Outside Dia. ...Pitch Dia.

2.789 2.625

3.186 3.000

4.219 4.000

5.053 4.800

6.288 6.000

8.117 7.714

9.424 9.000

Combination

21

28

21

28

24

32

24

32

24

32

27

36

27

36

Diametrical Pitch

8

7

6

5

4

3 1/2

3

Face Width

11/16

3/4

1

1 1/4

1 1/2

1 3/4

2

A..Mount Dist.

2 1/4

2 1/8

2 5/8

2 7/16

3 3/8

3

3 15/16

3 7/16

4 15/16

2 7/8

4 3/4

3 3/4

5 7/16

4 7/16

B..Bore Length

1

1 1/8

1 1/8

1 1/4

1 3/8

1 5/8

1 5/8

1 7/8

2

C..Bore Dia. +.0005 -.0000

15/16

1 1/16

1 1/16

1 3/16

1 5/16

1 7/16

1 7/16

1 11/16

1 13/16

D..Hub Dia.

1 7/8

2 1/8

2 1/8

2 3/8

2 3/4

2 7/8

3 1/4

3 1/8

3 3/4

E..Hub Length

3/8

1/2

7/16

9/16

7/16

9/16

7/16

9/16

5/8

F..Apex to Back.

3 1/2

5 1/2

4 1/2

6 1/2

5 3/16

G..Bore Dia. +.001 -.000

3 3/4

3 1/2

5

4

6

H..C'bore Dia.

5 3/8

5 1/8

7 1/4

6

8 1/8

J..Bolt Circle

4 1/2

4 1/4

6 1/8

4 7/8

7

K..Web Thick.

5/8

3/4

3/4

3/4

3/4

L..C'bore Depth

5/8

3/4

3/4

1 1/16

3/4

M..Bore Length

5/16

5/16

5/16

5/16

5/16

Holes

Size

13/32

13/32

17/32

17/32

17/32

No.

12

12

12

12

12

Keyway

1/4 x 3/32

1/4 x 3/32

1/4 x 3/32

1/4 x 3/32

3/8 x 1/8

3/8 x 1/8

3/8 x 1/8

3/8 x 1/8

1/2 x 3/16

**Max. Bore

1 3/16

1 7/16

1 9/16

1 11/16

2

2

2 3/8

2 1/8

2 3/4

*

*

*

*

*

Wt. each, lbs.

1.00

1.50

1.25

2.38

3.00

5.25

5.12

8.28

9.38

8.12

10.25

15.75

16.00

24.00

Torque (lb. in.)

Gear

1469

2025

4324

7435

13185

23356

34959

Pinion

1102

1519

3243

5576

9889

17517

26219

 

Note: All dimensions are in inches.     * Cannot be reworked.       **Keyway Unchanged

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