Single Groove Solid Pulley One Half Inch Bore and 2 Inch Outer Diameter, Cast Iron V Belt Pulley for 4L and 5L Belts, BK20 Style 1 Groove with Hex Set Screws, High Torque Durable Drive Component

BK20 1/2 in Bore Solid Pulley, 2 in OD, 1-pc
✔️ 1-groove BK20 pulley, 2 in OD (50.8 mm), bore 1/2 in (12.7 mm), 1-pc

This solid BK20 pulley is a one-groove drive component used to transfer motion from a shaft to a V-belt in compact power-transmission setups. It's commonly found in small machines, workshops, and DIY projects.

✅ 1-groove BK20 pulley, 2 in OD (50.8 mm), bore 1/2 in (12.7 mm)
✅ Cast iron construction for durability
✅ Fits 4L and 5L belts for common drives
✅ Hex set screws provide secure mounting

💡 What is a BK20 belt pulley used for in small power transmission setups? - Handy for transferring motion from a drive shaft to a V-belt - Works with 4L and 5L belts on 1/2 in shafts - Simple mounting with hex set screws for secure alignment