BlackStar 40BS55 3/4 K2S - 40 Pitch Finished Bore Sprocket - 55 Tooth - 3/4" Bore 3.1/16" so the 17/5V2650 interchanges with

so the 17/5V2650 interchanges with Gates 17/5V2650

The Gates D660 Hi-Power II Belts 90052660 is a standard V-belt featuring Classical D-section dimensions

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BlackStar 40BS55 3/4 K2S - 40 Pitch Finished Bore Sprocket - 55 Tooth - 3/4" Bore 3.1/16" so the 17/5V2650 interchanges withThe BlackStar 40BS55 3 4 K2S is a 40 pitch Finished Bore roller chain sprocket with 55 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket has a 3 4" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number 40BS55 3 4 K2S Chain Pitch 40 Number of Teeth 55 Bore Size 3 4" Minimum Bore 5 8" Maximum Bore 1 1 2" Bore Type