MARTIN SPROCKET & GR
50BS21 1 7/16 ROLLER CHAIN SPROCKET ; 5/8" P 21T 1-7/16" BORE
Roller Chain Sprocket; 1-7/16" Bore; 50 Chain; 21 Teeth; 1 Row of Teeth; No Hardened Teeth; 4.522" Outside Diameter; 4.194" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 5/8" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material
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