BlackStar 50BS43 7/8 K2S - 50 Pitch Finished Bore Sprocket - 43 Tooth - 7/8" Bore T10US "text": "The 5/B81 is used

"text": "The 5/B81 is used for high-shock and high-vibration drives

"name": "Does 32AT10/1480US ship from Houston

"mpn":"4/SPB2650-PIX"

so a 3/BK180 from any major manufacturer shares the same cross-section and length and runs on the same sheaves

BlackStar 50BS43 7/8 K2S - 50 Pitch Finished Bore Sprocket - 43 Tooth - 7/8" Bore T10US "text": "The 5/B81 is usedThe BlackStar 50BS43 7 8 K2S is a 50 pitch Finished Bore roller chain sprocket with 43 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket has a 7 8" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number 50BS43 7 8 K2S Chain Pitch 50 Number of Teeth 43 Bore Size 7 8" Minimum Bore 3 4" Maximum Bore 1 15 16" Bore Type