Twelve Tooth Roller Chain Sprocket Type B With Three Quarter Inch Bore Hardened 1045 Carbon Steel Drive Sprocket For ANSI Forty Chain Built For Heavy Duty Power Transmission And Industrial Equipment Use In Garages And Shops

Heavy-Duty ANSI #40 Sprocket, 12-Tooth, 3/4 bore ✔️ 3/4 in bore, 12 teeth, ANSI #40 chain, 1/2 in pitch; includes 1 sprocket, 2 screws, wrench

This Type B roller chain sprocket is designed for ANSI #40 drives. Made from 1045 carbon steel with hardened teeth (HRC 38-42) using high-frequency quenching, it stands up to heavy-duty power transmission. The blackened surface resists corrosion, and the bore is 3/4 inch (19.05 mm) with a 1/2 inch pitch (12.7 mm).

✅ 12 teeth, Type B, 3/4 in bore, 1/2 in pitch, ANSI #40 chain
✅ Hardened 1045 carbon steel teeth, HF quenched, HRC 38-42
✅ Blackened surface for corrosion resistance in harsh environments
✅ Includes 1 sprocket, 2 screws, 1 wrench for easy setup

💡 What is a roller chain sprocket used for in power transmission systems?

A handy guide to how this part helps drive machinery and keep chains aligned. - transfers torque from drive sprocket to chain in drive trains - optimized for ANSI #40 chain with 1/2 inch pitch and precise tooth engagement - hardened 1045 steel teeth provide long service life in tough environments - widely used in garages, workshops, and industrial machinery settings