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Specifications Part Number 80BS57 1 1/2 K2S Chain Pitch 80 Number of Teeth 57 Bore Size 1-1/2" Minimum Bore 1-3/8" Maximum Bore 2-15/16" Bore Type Finished Bore (Keyway + Set Screws) Hub Style Finished Bore Strand Count Single Material Steel Outside Diameter 18
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BlackStar H50BS21 1 1/2 K2S - 50 Pitch Finished Bore Sprocket - 21 Tooth - 1-1/2" Bore Double V-Belt Specifications Part Number 80BS57 1The BlackStar H50BS21 1 1 2 K2S is a 50 pitch Finished Bore roller chain sprocket with 21 teeth, precision manufactured from SAE 1045 steel with induction hardened teeth for extended wear life and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket has a 1 1 2" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number H50BS21 1 1 2 K2S Chain Pitch 50 Number of Teeth 21 Bore
