BlackStar 40Q112 - 40 Pitch Q Sprocket - 112 Tooth TL4545 so a 12/SPC6875 from any

so a 12/SPC6875 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

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"name":"D&D Global 120-S8M-1200 Timing Belt — S8M Section

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BlackStar 40Q112 - 40 Pitch Q Sprocket - 112 Tooth TL4545 so a 12/SPC6875 from anyThe BlackStar 40Q112 is a 40 pitch Q roller chain sprocket with 112 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. Requires a Split Taper Bushing (sold separately). Specifications Part Number 40Q112 Chain Pitch 40 Number of Teeth 112 Bore Type Plain Bore Hub Style Q Strand Count Single Material Steel Outside Diameter 18. 12" Pitch Diameter 17. 827" Approx. Weight 18. 300