BlackStar 50BS40 1 1/8 K2S - 50 Pitch Finished Bore Sprocket - 40 Tooth - 1-1/8" Bore General Purpose so a 3/C250 from any

so a 3/C250 from any major manufacturer shares the same cross-section and length and runs on the same sheaves

"mpn":"TB072053762150"

"name":"Gates TP510H150 PowerGrip Twin Power Timing Belts 92463309"

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BlackStar 50BS40 1 1/8 K2S - 50 Pitch Finished Bore Sprocket - 40 Tooth - 1-1/8" Bore General Purpose so a 3/C250 from anyThe BlackStar 50BS40 1 1 8 K2S is a 50 pitch Finished Bore roller chain sprocket with 40 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket has a 1 1 8" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number 50BS40 1 1 8 K2S Chain Pitch 50 Number of Teeth 40 Bore Size 1 1 8" Minimum Bore 3 4" Maximum Bore 1 15 16"