BlackStar 60BS31 1 5/8 K2S - 60 Pitch Finished Bore Sprocket - 31 Tooth - 1-5/8" Bore 2L Section com/s/files/1/0666/7721/products/3V_5V_8V_banded_wrapped_belts_03478c26-e39f-4d40-b3e8-1f9f27e2c15d

com/s/files/1/0666/7721/products/3V_5V_8V_banded_wrapped_belts_03478c26-e39f-4d40-b3e8-1f9f27e2c15d

Belt Section B Sub-Type Banded Width 21/32" Thickness 7/16" Length 140 in Number of Bands 9 Material Neoprene Reinforcement Polyester Cord Color Black Temperature Range -30°F to 185°F

com/s/files/1/0666/7721/products/Wrapped_V_Belt_bd1602e1-a048-4709-b284-6810dad1b34d

com/s/files/1/0666/7721/products/QD_Sheave_a11d52f4-d721-4002-ad1b-c02803fd83d8

so a 3/8V1650 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

BlackStar 60BS31 1 5/8 K2S - 60 Pitch Finished Bore Sprocket - 31 Tooth - 1-5/8" Bore 2L Section com/s/files/1/0666/7721/products/3V_5V_8V_banded_wrapped_belts_03478c26-e39f-4d40-b3e8-1f9f27e2c15dThe BlackStar 60BS31 1 5 8 K2S is a 60 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 5 8" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number 60BS31 1 5 8 K2S Chain Pitch 60 Number of Teeth 31 Bore Size 1 5 8" Minimum Bore 1" Maximum Bore 1 15 16" Bore