Shaft 

Diameter

Part Number

B

Distance 

Between 

Bolt Holes

L

Mounting 

Surface to 

Collar Face

A

D

E

F

Bolts

G

H

J

M

N

P

Approx. 

Weight

2 1/2

F3U240N *Δ

5 7/8

2 25/32

5 7/8

2 11/16

7 3/8

5/8

3/32

3/4

3 5/32

4 3/16

9 13/16

5/8

14.40

2 11/16

F3U243N *Δ

65.00

F3U2M65N *Δ

149.22

70.60

149.20

68.26

187.30

16.00

2.40

19.00

80.20

106.40

249.20

15.90

6.50

2 3/4

F3U244N *Δ

6

2 31/32

6 3/8

2 7/8

7 3/4

3/4

3/32

3/4

3 3/8

4 5/8

10 1/4

11/16

17.40

2 15/16

F3U247N *Δ

3

F3U2E48N *Δ

75.00

F3U2M75N *Δ

152.40

75.40

161.90

73.02

196.80

20.00

2.40

19.00

85.70

117.50

260.40

17.50

7.85

3 7/16

F3U255N *Δ

6 3/4

3 21/32

7 1/2

3 9/16

8 9/16

3/4

3/32

1

4 1/32

5 3/16

11 3/8

3/4

25.70

3 1/2

F3U2E56N *Δ

85.00

F3U2M85N *Δ

171.45

92.90

190.50

90.49

217.50

20.00

2.40

25.40

102.40

131.80

288.90

19.00

11.55