2-7/16" Bore; 4-9/16" Hub Diameter; Chain Coupling; Hub; Shaft; Finished Bore; 6.27" Outside Diameter; 2-3/8" Length Thru Bore; 37/64" Between Shaft Ends; 80 Chain; 18 Teeth; 2-3/8" Width; 8018; Keyway; Steel

1-1/4" Bore; 3-1/2" Hub Diameter; Chain Coupling; Hub; Shaft; Finished Bore; 4.7" Outside Diameter; 1-7/8" Length Thru Bore; 7/16" Between Shaft Ends; 60 Chain; 18 Teeth; 1-7/8" Width; 6018; Keyway; Steel

1-15/16" Bore; 3-1/2" Hub Diameter; Chain Coupling; Hub; Shaft; Finished Bore; 4.7" Outside Diameter; 1-7/8" Length Thru Bore; 7/16" Between Shaft Ends; 60 Chain; 18 Teeth; 1-7/8" Width; 6018; Keyway; Steel

2-31/32" Hub Diameter; Chain Coupling; Hub; Shaft; Bushed; 1/2 To 1-11/16 Bore Range; 3.946" Outside Diameter; 1" Length Thru Bore; 3/8" Between Shaft Ends; 50 Chain; 18 Teeth; 1-11/16" Width; 5018; Keyway