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so a 2/BK121 from any major manufacturer shares the same cross-section and length and runs on the same sheaves
com/products/d-and-d-608mxl787-timing-belt"
"sku":"TB072053937213"
The BlackStar 50BTL44 is a 50 pitch Taper Lock roller chain sprocket with 44 teeth
BlackStar 2-3V300JA - QD Sheave Series-XTB40 so a 2/BK121 from anyThe BlackStar 2 3V300JA is a 2 groove qd sheave for 3V section belts, manufactured from cast iron. Requires a QD Type JA Bushing (sold separately). Specifications Part Number 2 3V300JA Product Type QD Sheave Number of Grooves 2 Belt Profile 3V Outside Diameter 3. 00" Bushing Required QD Type JA Bushing Material Cast Iron Approx. Weight 1. 200 lbs Pitch Diameter 30. 0" Compatible Belts 3V Bushing Required This sheave requires a QD Type JA Bushing to
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