40 Chain Sprocket For 21 Tooth Configuration One And Quarter Inch Finished Bore With Keyway And Two Set Screws Ready To Install High Strength Power Transmission Sprocket Built For Industrial Machinery And Equipment

Single #40 chain sprocket, 21 teeth, 1¼ bore for power
✔️ 21-tooth, 1 1/4 finished bore with keyway and set screws

This #40 chain sprocket is a precision-driven gear designed for secure torque transmission across conveyors, agricultural equipment, and industrial machinery. It ships ready for mounting with a keyway and two set screws for a tight fit.

✅ Bore size: 1 1/4 finished bore
✅ Chain size: #40 roller chain
✅ Teeth: 21
✅ Bore style: BS
✅ Keyway: 1/4 x 1/8
✅ Mounting: Includes 2 set screws

💡 What is a chain sprocket with a finished bore used for in power transmission? A handy gear that helps transfer torque in chain-driven setups. - Transfers torque in power transmission systems - Uses a precise keyway and set screws for secure mounting - Fits #40 roller chain with 21 teeth - Promotes accurate alignment and long service life

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