Hub; Coupling; 1-31/32" Hub Diameter; Chain Coupling; Shaft; Bushed; 2.81" Outside Diameter; 1-1/8" Length Thru Bore; 9/32" Between Shaft Ends; 40 Chain; 16 Teeth; 1-1/8" Width; 4016; 1108; Yes; Steel; 5000RPM Speed

Hub; Coupling; 1-3/8" Bore; 3-7/8" Hub Diameter; Chain Coupling; Shaft; Finished Bore; 5-3/16" Outside Diameter; 2" Length Thru Bore; 7/16" Between Shaft Ends; 60 Chain; 20 Teeth; 2" Width; 6020; No Bushing; Yes; Steel; 2500RPM Speed

Hub; Coupling; 5-11/16" Hub Diameter; Chain Coupling; Shaft; Minimum Plain Bore; 7.84" Outside Diameter; 2-3/4" Length Thru Bore; 23/32" Between Shaft Ends; 100 Chain; 18 Teeth; 2-3/4" Width; 10018; No Bushing; No; Steel; 1800RPM Speed

Hub; Coupling; 4-9/16" Hub Diameter; Chain Coupling; Shaft; Bushed; 6.27" Outside Diameter; 2-3/8" Length Thru Bore; 37/64" Between Shaft Ends; 80 Chain; 18 Teeth; 2-3/8" Width; 8018; SF; Yes; Steel; 2000RPM Speed

Hub; Coupling; 6-23/32" Hub Diameter; Chain Coupling; Shaft; Minimum Plain Bore; 8.64" Outside Diameter; 3-1/8" Length Thru Bore; 23/32" Between Shaft Ends; 100 Chain; 20 Teeth; 3-1/8" Width; 10020; No Bushing; No; Steel; 1800RPM Speed