Shaft Diameter

Part Number

B

Centerline to Bolt Hole Centers

C

Bolt Hole Center to Bolt Center

L

Mounting Surface to Inner Ring

Long Hub 

Face

U

Distance Between 

Bolt Holes

A

D

E

F

Bolts

G

H

K

N

P

Approx. Weight

3/4

FB3U212N *■

1 11/16

7/8

1 11/32

1 1/2

2 1/2

1 9/32

2 3/8

3/8

1/16

5/16

3

4 1/4

11/32

1.40

20.00

FB3U2M20N *■

42.90

22.20

34.10

38.10

63.50

32.50

60.30

10.00

1.60

7.90

76.20

108.00

8.70

0.63

7/8

FB3U214N *Δ■

1 13/16

1 1/8

1 29/64

1 5/8

2 3/4

1 23/64

2 1/2

3/8

3/32

3/8

3 3/8

4 3/4

19/64

1.90

15/16

FB3U215N *Δ■

1

FB3U216N *Δ■

25.00

FB3U2M25N *Δ■

46.00

28.60

38.90

41.30

69.80

34.53

63.50

10.00

2.40

9.50

85.70

120.60

7.50

0.86

1 1/8

FB3U218N *Δ■

2 1/16

1 1/4

1 5/8

1 7/8

3 1/4

1 9/16

2 3/4

3/8

1/16

3/8

3 3/4

5 3/8

3/8

2.50

1 3/16

FB3U219N *Δ■

1 1/4

FB3U2E20N *Δ■

30.00

FB3U2M30N *Δ■

52.30

31.80

43.70

47.60

82.60

39.69

69.80

10.00

1.60

9.50

95.20

136.50

9.50

1.13

1 1/4

FB3U220N *Δ■

2 3/8

1 1/4

1 59/64

2

3 3/4

1 49/64

3 1/4

1/2

5/32

1/2

4 1/4

6 1/8

31/64

3.40

1 3/8

FB3U222N *Δ■

1 7/16

FB3U223N *Δ■

35.00

FB3U2M35N *Δ■

60.30

31.80

48.80

50.80

95.20

44.85

82.60

12.00

4.00

12.70

108.00

155.60

12.30

1.53