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so a 12/CK128 from any major manufacturer shares the same cross-section and length and runs on the same sheaves
"sku":"TB072053619591"
"sku":"TB770075669241"
"price":"4440
com/products/diesel-belting-23pk1230-micro-v-micro-v-belt"
BlackStar 50BS31 1 3/8 K2S - 50 Pitch Finished Bore Sprocket - 31 Tooth - 1-3/8" Bore XLK Section so a 12/CK128 from anyThe BlackStar 50BS31 1 3 8 K2S is a 50 pitch Finished Bore roller chain sprocket with 31 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket has a 1 3 8" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number 50BS31 1 3 8 K2S Chain Pitch 50 Number of Teeth 31 Bore Size 1 3 8" Minimum Bore 3 4" Maximum Bore 1 15 16"
