No 40 Chain Roller Sprocket B Type For Single Strand Chains One Quarter Inch Bore 18 Teeth Carbon Steel With Keyway And Set Screws Black Oxide Heavy Duty Industrial Grade Durable Precision Fit For Machinery And Equipment

Heavy Duty 18-Tooth No 40 Chain Roller Sprocket, 1-1/4 Bore
✔️ 1x bore 1-1/4 in, 18 teeth, 80mm OD, 2x set screws, carbon steel

This single chain sprocket is designed for No 40 single-strand chains, offering a precise fit for milling machines, drilling machines, and other machinery transmissions. It features a fixed shaft mounting with a 1-1/4 inch bore, 18 teeth, and a black oxide finish for rust resistance. The keyway and two set screws at 90 degrees ensure a secure, exact-driven connection.

Dimension	Metric	Inches
Bore	31.75 mm	1.25 in
Outer diameter	80 mm	3.15 in
Step outer diameter	57 mm	2.24 in
Thickness	22 mm	0.87 in
Teeth	18	18

✅ Bore: 1-1/4 in (31.75 mm)
✅ Teeth: 18 engage chain securely
✅ Outer diameter: 80 mm (3.15 in)
✅ Material: carbon steel with black oxide finish
✅ Includes keyway and 2 set screws for fixed shaft mounting

💡 What is a chain roller sprocket used for in machinery?

- handy for transmitting torque along a chain drive in industrial setups - helps keep chain properly meshed to minimize slip and wear - locks to a shaft via keyway and set screws for stable, precise operation - common in milling machines, drill presses, and other equipment where fixed‑shaft drives are needed