BlackStar H40BS23 1 1/2 K2S - 40 Pitch Finished Bore Sprocket - 23 Tooth - 1-1/2" Bore Synchro-Power Polyurethane com/s/files/1/0666/7721/products/3M_5M_8M_14M_HTD_Timing_Belt_0dcab822-8b07-41c3-95da-9d5788cc0bab

com/s/files/1/0666/7721/products/3M_5M_8M_14M_HTD_Timing_Belt_0dcab822-8b07-41c3-95da-9d5788cc0bab

so the 9/C90 interchanges with Gates 9/C90

Specifications Part Number 80BS44 1 15/16 K2S Chain Pitch 80 Number of Teeth 44 Bore Size 1-15/16" Minimum Bore 1-3/8" Maximum Bore 2-15/16" Bore Type Finished Bore (Keyway + Set Screws) Hub Style Finished Bore Strand Count Single Material Steel Outside Diameter 14

315H075 has a 12

BlackStar H40BS23 1 1/2 K2S - 40 Pitch Finished Bore Sprocket - 23 Tooth - 1-1/2" Bore Synchro-Power Polyurethane com/s/files/1/0666/7721/products/3M_5M_8M_14M_HTD_Timing_Belt_0dcab822-8b07-41c3-95da-9d5788cc0babThe BlackStar H40BS23 1 1 2 K2S is a 40 pitch Finished Bore roller chain sprocket with 23 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 has a 1 1 2" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number H40BS23 1 1 2 K2S Chain Pitch 40 Number of Teeth 23 Bore