Shaft Diameter

Part Number

A

Pilot Diameter

B

Distance

Between Bolt Holes

L

Mounting 

Surface to Collar Face

R

Bolt Circle Radius

C

D

F

Bolts

H

J

M

P

U

Approx. Weight

1 7/16

ZBR3107

3.625

3 3/32

1 1/2

2 3/16

5 1/4

2 59/64

3/8

1/2

1 3/8

2 5/16

25/32

3/4

5.60

1 11/16

ZBR3111

4.250

3 5/8

1 19/32

2 9/16

6 1/8

3 3/16

7/16

1/2

1 17/32

2 5/8

3/4

7/8

8.60

1 15/16

ZBR3115

4.500

3 51/64

1 23/32

2 11/16

6 3/8

3 9/32

7/16

9/16

1 9/16

2 15/16

27/32

7/8

9.00

2 3/16

ZBR3203

5.000

4 1/4

1 15/16

3

7 1/8

3 1/2

1/2

9/16

1 9/16

3 1/4

31/32

1

14.10

2 7/16

ZBR3207

5.500

4 19/32

1 31/32

3 1/4

7 5/8

3 21/32

1/2

5/8

1 11/16

3 9/16

1 1/64

1

15.00

2 1/2

ZBR3208

14.60

2 11/16

ZBR3211

6.375

5 19/64

2 13/64

3 3/4

8 3/4

4 13/64

5/8

3/4

2

4 1/16

1 1/64

1 1/4

23.80

2 15/16

ZBR3215

22.70

3 7/16

ZBR3307

7.375

6 3/32

2 37/64

4 5/16

10 1/4

4 37/64

3/4

15/16

2

4 15/16

1 9/64

1 1/4

34.40

3 1/2

ZBR3308

33.90

3 15/16

ZBR3315

8.125

6 5/8

2 11/16

4 11/16

10 7/8

5 3/16

3/4

1 1/8

2 1/2

5 5/8

1 1/16

1 1/2

49.00