40 Chain Sprocket, 18 Tooth, 5/8 Finished Bore With Keyway And Set Screws, Ready To Install For Reliable Power Transmission In Machinery, Conveyors, And Industrial Drive Systems For Long-Lasting Performance

Premium #40 chain sprocket - 18 teeth, 5/8 bore, single-pack
✔️ 18-tooth sprocket, 5/8 bore (15.875 mm), keyway, 2 set screws, single-pack

This #40 chain sprocket is built for dependable power transfer in conveyors, packaging lines, agricultural equipment, and general machine drives. The 5/8 finished bore provides precise mounting, while the included keyway and set screws ensure secure, slip-free operation in tough industrial settings.

✅ Bore Size: 5/8 in (15.875 mm) finished bore
✅ Chain Size: #40 roller chain
✅ Teeth: 18 teeth
✅ Bore Style: BS
✅ Keyway: 3/16 x 3/32 in (4.76 x 2.38 mm)
✅ Mounting: Includes 2 set screws
✅ Pack: single-pack

💡 What is a chain sprocket and how does it function in a drive system? This handy explainer covers the basics:

- A chain sprocket engages with a matching roller chain to transfer rotational motion and torque efficiently - Tooth count, pitch, and bore size determine gearing and how much load it can handle - A keyed bore plus set screws helps keep the sprocket from slipping on the shaft - Regular maintenance and proper alignment extend service life and reduce wear