Chain Sprocket For 100 Chain With Twenty One Teeth And Two And Three Sixteenths Inch Finished Bore Includes Keyway And Two Set Screws For Secure Mounting And Reliable Power Transmission Model 100BS21 2 3 16

21-Tooth #100 Chain Sprocket, 2 3/16 Bore, Single Unit
✔️ 21 teeth, 2 3/16 finished bore, includes keyway and 2 set screws

This 21-tooth chain sprocket is designed for #100 roller chain and comes with a 2 3/16 in finished bore, a precision keyway, and two set screws for secure mounting. It's ideal for conveyors, agricultural equipment, and general power-transmission systems where reliable torque transfer is required.

✅ Bore: 2 3/16 in finished bore
✅ Chain size: #100 roller chain
✅ Teeth: 21
✅ Bore style: BS
✅ Keyway: 1/2 x 1/4
✅ Mounting: Includes 2 set screws

💡 What is a chain sprocket used for in power transmission systems? Here's a handy explanation.

- Transfers torque from drive chain to the shaft in conveyors and machinery. - Works with #100 roller chain and BS bore for secure fit. - Maintains chain alignment and reduces slip when paired with a keyway and set screws. - Ideal for industrial settings needing dependable, straightforward drive components.