21 Tooth Roller Chain Sprocket Type B For ANSI Forty Chain One Half Inch Pitch Three Quarter Inch Bore Hardened 1045 Carbon Steel Drive Sprocket Built Tough With Anti Rust Finish

21-Tooth ANSI #40 Roller Chain Sprocket, 1/2 in pitch
✔️ 21 teeth, 3/4 in bore, 1/2 in pitch, Type B, ANSI #40 with hardware

The rugged drive sprocket is built for ANSI #40 roller chain setups and is widely used in power transmission across agricultural machinery, woodworking equipment, and general machine tools.

✅ 21 teeth, ANSI #40 chain compatibility, 1/2 in pitch, 3/4 in bore
✅ Hardened teeth with HRC 38-42 via high-frequency quenching
✅ Black anti-rust finish for corrosion resistance
✅ Includes 2 screws and 1 wrench for quick installation
✅ Suitable for heavy-duty power transmission in harsh environments

💡 What is an ANSI #40 roller chain sprocket used for in power transmission?

In practice, it provides a simple, reliable way to transfer torque between shafts in chain-driven systems. - transfers torque between drive components in chain-driven systems - designed for ANSI #40 roller chain with 1/2 inch pitch - features hardened teeth for long wear life - finished with a corrosion-resistant coating for harsh environments ✝️