Shaft Diameter

Part Number

B

Centerline to Bolt Hole Centers

C

Mounting Bolt 

Hole Centers to Mounting Bolt Center

L

Mounting Surface to Collar Face

U

Distance Between Two Upper Holes

A

D

E

F

Bolts

G

H

J

K

M

N

2 7/16

FBB22639H

3 3/4

1 3/4

3 3/8

3

5 3/8

3.16

4 7/8

5/8

3/4

3 31/32

6 1/4

3 5/32

8 15/16

17.50

2 11/16

FBB22643H

3 7/8

2 1/4

3 61/64

4

6 1/4

3.28

5 3/4

3/4

7/8

4 7/16

7

3 5/8

10 1/8

30.00

2 15/16

FBB22647H

28.00