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SER
Unit of Measure
1 2 

Item #

Shaft Diameter d

Dimension d Diagram

Dimension D

Dimension D Diagram

Dimension B

Dimension C

Dimension n

Dimension m

SER-201-8 N/A 1/2 in

N/A

N/A N/A N/A N/A
SER-202-10 N/A 5/8 in

N/A 47 mm

N/A 30.963 mm N/A 15.875 mm N/A 10.31 mm N/A 20.65 mm
SER-204-12 N/A 3/4 in

N/A 47 mm

N/A 30.965 mm N/A 15.875 mm N/A 10.31 mm N/A 20.65 mm
SER-205-14 N/A 7/8 in

N/A 52 mm

N/A 34.925 mm N/A 19.05 mm N/A 13.09 mm N/A 21.84 mm
SER-205-15 N/A 15/16 in

N/A 52 mm

N/A 34.925 mm N/A 19.05 mm N/A 13.09 mm N/A 21.84 mm
SER-205-16 N/A 1 in

N/A 52 mm

N/A 34.925 mm N/A 19.05 mm N/A 13.09 mm N/A 21.84 mm
SER-206-17 N/A 1 1/16 in

N/A 62 mm

N/A 38.1 mm N/A 22.2 mm N/A 15.9 mm N/A 22.2 mm
SER-206-18 N/A 1 1/8 in

N/A 62 mm

N/A 38.1 mm N/A 22.2 mm N/A 15.9 mm N/A 22.2 mm
SER-206-19 N/A 1 3/16 in

N/A 62 mm

N/A 38.1 mm N/A 22.2 mm N/A 15.9 mm N/A 22.2 mm
SER-206-20 N/A 1 1/4 in

N/A 62 mm

N/A 38.1 mm N/A 22.2 mm N/A 15.9 mm N/A 22.2 mm
SER-207-20 N/A 1 1/4 in

N/A 72 mm

N/A 42.9 mm N/A 27.8 mm N/A 17.5 mm N/A 25.4 mm
SER-207-21 N/A 1 5/16 in

N/A 72 mm

N/A 42.9 mm N/A 27.8 mm N/A 17.5 mm N/A 25.4 mm
SER-207-22 N/A 1 3/8 in

N/A 72 mm

N/A 42.9 mm N/A 27.8 mm N/A 17.5 mm N/A 25.4 mm
SER-207-23 N/A 1 7/16 in

N/A 72 mm

N/A 42.9 mm N/A 27.8 mm N/A 17.5 mm N/A 25.4 mm
SER-208-24 N/A 1 1/2 in

N/A 80 mm

N/A 49.2 mm N/A 27.8 mm N/A 19 mm N/A 30.1 mm
SER-208-25 N/A 1 9/16 in

N/A 80 mm

N/A 49.2 mm N/A 27.8 mm N/A 19 mm N/A 30.1 mm
SER-209-26 N/A 1 5/8 in

N/A 85 mm

N/A 49.2 mm N/A 27.8 mm N/A 19 mm N/A 30.1 mm
SER-209-27 N/A 1 11/16 in

N/A 85 mm

N/A 49.2 mm N/A 27.8 mm N/A 19 mm N/A 30.1 mm
SER-209-28 N/A 1 3/4 in

N/A 85 mm

N/A 49.2 mm N/A 27.8 mm N/A 19 mm N/A 30.1 mm
SER-210-30 N/A 1 7/8 in

N/A 90 mm

N/A 51.6 mm N/A 28.58 mm N/A 19 mm N/A 32.6 mm
SER-210-31 N/A 1 15/16 in

N/A 90 mm

N/A 51.6 mm N/A 28.58 mm N/A 19 mm N/A 32.6 mm
SER-211-32 N/A 2 in

N/A 100 mm

N/A 55.6 mm N/A 30.1 mm N/A 22.2 mm N/A 33.4 mm
SER-211-34 N/A 2 1/8 in

N/A 100 mm

N/A 55.6 mm N/A 30.1 mm N/A 22.2 mm N/A 33.4 mm
SER-211-35 N/A 2 3/16 in

N/A 100 mm

N/A 55.6 mm N/A 30.1 mm N/A 22.2 mm N/A 33.4 mm
SER-212-36 N/A 2 1/4 in

N/A 110 mm

N/A 65.1 mm N/A 31.75 mm N/A 25.4 mm N/A 39.7 mm
Unit of Measure
1 2