BlackStar 1B80SDS - QD Sheave SPA "text": "The 2/B56 is used

"text": "The 2/B56 is used for high-shock and high-vibration drives

250-S8M-944 is a timing belt used on positive

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Is 13/5V1900 interchangeable with Gates 13/5V1900

BlackStar 1B80SDS - QD Sheave SPA "text": "The 2/B56 is usedThe BlackStar 1B80SDS is a 1 groove qd sheave for B section belts, manufactured from cast iron. Requires a QD Type SDS Bushing (sold separately) to mount to your shaft. Specifications Part Number 1B80SDS Product Type QD Sheave Number of Grooves 1 Belt Profile B Outside Diameter 8. 35" Material Cast Iron Approx. Weight 9. 600 lbs Bushing Required QD Type SDS Bushing Pitch Diameter 8. 0" Compatible Belts A, B, 4L, 5L Bushing Required This sheave