Shaft 

Diameter

Part Number

A

Pilot Diameter

B

Bolt Hole 

Circle Diameter

L

Mounting 

Surface to 

Collar Face

C

D

F

Bolts

G

H

M

U

Y

Approx.

 Weight

7/8

FC3U214N*Δ■

3.000

3 5/8

55/64

4 3/8

1 23/64

3/8

-

5/8

-

1/2

1 7/16

3.00

15/16

FC3U215N*Δ■

1

FC3U216N*Δ■

25.00

FC3U2M25N*Δ■

76.200

92.08

21.80

111.10

34.53

10.00

-

15.90

-

12.70

36.50

1.35

1 1/8

FC3U218N*Δ■

3.375

4 1/8

1 9/64

5

1 9/16

7/16

-

13/16

-

27/64

1 23/32

4.50

1 3/16

FC3U219N*Δ■

1 1/4

FC3U2E20N*Δ■

30.00

FC3U2M30N*Δ■

85.720

104.78

29.00

127.00

39.69

10.00

-

20.60

-

10.70

43.70

2.00

1 1/4

FC3U220N*Δ■

3.625

4 3/8

1 31/64

5 1/4

1 49/64

7/16

3/16

1 1/16

-

15/32

2

4.60

1 3/8

FC3U222N*Δ■

1 7/16

FC3U223N*Δ■

35.00

FC3U2M35N*Δ■

92.080

111.20

37.70

133.40

44.85

10.00

4.80

27.00

-

11.90

50.80

2.10

1 1/2

FC3U224N*Δ■

3.625

4 3/8

1 15/32

5 1/4

1 29/32

7/16

1/32

1 1/32

-

15/32

2 1/16

4.30

40.00

FC3U2M40N*Δ■

92.080

111.12

37.30

133.40

48.42

10.00

0.80

26.20

-

11.90

52.40

1.95

1 5/8

FC3U226N*Δ■

4.250

5 1/8

1 9/16

6 1/8

2 1/32

1/2

-

1 1/16

-

15/32

2 5/64

6.30

1 11/16

FC3U227N*Δ■

1 3/4

FC3U228N*Δ■

45.00

FC3U2M45N*Δ■

107.950

130.18

39.70

155.60

51.59

12.00

-

27.00

-

11.90

52.80

2.84

1 15/16

FC3U231N*Δ■

4.500

5 3/8

1 41/64

6 3/8

2 3/32

1/2

11/64

1 13/64

-

5/8

2 1/4

7.40

50.00

FC3U2M50N*Δ■

114.300

136.52

41.70

161.90

53.18

12.00

4.40

30.60

-

15.90

57.20

3.33

2

FC4U232N*Δ■

4.500

5 3/8

1 21/32

6 3/8

2 1/4

1/2

1/32

1 1/32

-

5/8

2 17/64

7.70

55.00

FC4U2M55N*Δ■

114.300

136.52

42.10

161.90

57.15

12.00

0.80

26.20

-

15.90

57.50

3.50

2

FC3U232N*Δ■

5.000

6

1 17/32

7 1/8

2 1/4

9/16

5/32

1

-

7/8

2 1/8

9.90

2 3/16

FC3U235N*Δ■

55.00

FC3U2M55N*Δ■

127.000

152.40

38.90

181.00

57.15

14.00

4.00

25.40

-

22.20

54.00

4.45

2 1/4

FC3U236N*Δ■

5.500

6 1/2

1 5/8

7 5/8

2 1/2

9/16

-

1

-

7/8

2 11/64

12.00

2 3/8

FC3U238N*Δ■

2 7/16

FC3U239N*Δ■

60.00

FC3U2M60N*Δ■

139.700

165.10

41.30

193.70

63.50

14.00

-

25.40

-

22.20

55.20

5.40

2 1/2

FC3U240N*Δ

6.375

7 1/2

1 13/16

8 3/4

2 11/16

5/8

3/16

1 3/16

4 3/16

1 1/16

2 3/16

17.00

2 11/16

FC3U243N*Δ

65.00

FC3U2M65N*Δ

161.920

190.50

46.00

222.20

68.26

16.00

4.80

30.20

106.40

27.00

55.60

7.65

2 3/4

FC3U244N*Δ

6.375

7 1/2

1 13/16

8 3/4

2 7/8

5/8

3/16

1 1/16

4 5/8

1 1/4

2 7/32

17.70

2 15/16

FC3U247N*Δ