Shaft

 Diameter

Part Number

B

Distance Between Bolt Holes

L

Mounting 

Surface to

 Collar Face

A

C

D

F

Bolts

G

H

J

M

N

Approx. Weight

Square

Circle

1 7/16

EFB22523H

3 1/2

4 61/64

3 5/8

3 11/16

4 5/8

3 9/16

1/2

1/16

1 3/8

4 1/32

2 5/16

6 1/16

8.00

1 11/16

EFB22527H

4 1/8

5 53/64

3 15/16

4 1/4

5 3/8

3 13/16

1/2

1/8

1 7/16

4 9/32

2 19/32

7 7/32

11.00

1 15/16

EFB22531H

4 3/8

6 3/16

3 15/16

4 1/2

5 5/8

3 13/16

1/2

1/8

1 7/16

4 5/16

2 7/8

7 5/16

12.00

2 3/16

EFB22535H

4 7/8

6 57/64

4 1/4

5

6 1/4

4 1/8

5/8

1/8

1 9/16

4 5/8

3 1/4

8 9/32

16.00

2 7/16

EFB22539H

5 3/8

7 19/32

4 9/16

5 1/2

6 7/8

4 3/8

5/8

3/16

1 23/32

4 15/16

3 9/16

8 31/32

18.00

2 11/16

EFB22543H

6

8 31/64

5 1/16

6 1/2

7 3/4

4 7/8

3/4

3/16

1 25/32

5 13/16

4 1/16

10 1/8

28.00

2 15/16

EFB22547H

26.00

3 7/16

EFB22555H

7

9 59/64

5 13/32

7 3/8

9 1/4

5 5/16

3/4

1/4

1 31/32

5 3/4

4 29/32

11 21/32

44.00

3 15/16

EFB22563H

7 3/4

10 61/64

6 7/32

8 7/8

10 1/4

6 1/8

7/8

1/4

2 7/32

6 5/8

5 5/8

12 31/32

60.00

4

EFB22564H

59.00