40 Chain Sprocket With 21 Tooth And One And One Half Inch Finished Bore Featuring Keyway And Two Set Screws For Secure Mounting And Reliable Power Transmission In Industrial Drive Systems

Premium #40 Chain Sprocket, 21 Teeth, 1.5 Bore, Single
✔️ 21-tooth, 1.5 in finished bore with keyway & 2 screws

This rugged sprocket is built for dependable power transfer in conveyors, industrial machines, and farm equipment. With a 1.5 inch finished bore, it ships ready to install with a precise keyway and two set screws for secure mounting.

✅ Bore: 1.5 in finished bore with 3/8 x 3/16 keyway
✅ Chain size: #40 roller chain
✅ Teeth: 21 teeth
✅ Mounting: includes 2 set screws
✅ Bore style: BS

💡 What is a typical use for a chain sprocket and how do you choose the right bore?

This handy guide helps you pick the right bore and drive for common power-transmission setups. - match chain size #40 and 21-tooth count for proper ratio - verify shaft diameter matches 1.5 in bore and keyway size - ensure secure mounting with set screws to prevent slip - consider environment and lubrication needs for conveyors and machinery