BlackStar H100E21 - 100 Pitch QD Sprocket - 21 Tooth Stainless Steel Taper-Lock Bushings so a 1250-5M-25 from any

so a 1250-5M-25 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

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so the Megadyne A69 interchanges with Gates

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"name": "How many ribs does 250K12 have

BlackStar H100E21 - 100 Pitch QD Sprocket - 21 Tooth Stainless Steel Taper-Lock Bushings so a 1250-5M-25 from anyThe BlackStar H100E21 is a 100 pitch QD roller chain sprocket with 21 teeth, precision manufactured from SAE 1045 steel with induction hardened teeth for extended wear life and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket requires a QD Type E Bushing (sold separately). Specifications Part Number H100E21 Chain Pitch 100 Number of Teeth 21 Maximum Bore 3 1 2" Bore Type QD Hub Style QD Bushing Required QD Type