BlackStar 5B94SF - QD Sheave 70mm 1304-8M-30 is a standardized industry

1304-8M-30 is a standardized industry size

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Is 12/C157 the same as other brands' 12/C157

BlackStar 5B94SF - QD Sheave 70mm 1304-8M-30 is a standardized industryThe BlackStar 5B94SF is a 5 groove qd sheave for B section belts, manufactured from cast iron. Requires a QD Type SF Bushing (sold separately) to mount to your shaft. Specifications Part Number 5B94SF Product Type QD Sheave Number of Grooves 5 Belt Profile B Outside Diameter 9. 75" Material Cast Iron Approx. Weight 24. 000 lbs Bushing Required QD Type SF Bushing Pitch Diameter 9. 4" Compatible Belts A, B, 4L, 5L Bushing Required This sheave requires a