Drop In Easy Install Crank Shaft Adapter Five Eighths To Three Quarters Inch Sleeve Reducer For Pulleys Belts Gearboxes Bushing Sheave And Key Kit Fits Motors And Gas Engines Enlarge Crank Bore To Match Pulleys
✔️ Sleeve converts crank 5/8 to 3/4 in; includes 3/16 in keystock
This drop-in sleeve enlarges a 5/8 in crank bore to 3/4 in, enabling a wide range of pulleys, belts, and gearboxes to fit existing drive lines. It's perfect for motors and gas engines where upgrading components would be costly or disruptive.
✅ Crank bore adaptation from 5/8 in to 3/4 in with 3/16 in keystock
✅ Includes one sleeve and one 3/16 in keystock for secure mounting
✅ Cold rolled steel construction with CNC precision machining and tumble finish
✅ Drop-in design for pulleys, belts, gearboxes while keeping existing setup
💡 What is a crank shaft adapter used for in engine belt and pulley setups?
This handy piece lets you match crank bores to pulley hardware quickly.
- Converts 5/8 to 3/4 bore for pulleys
- Includes 3/16 keystock for secure alignment
- Saves replacing motors or pulleys when shaft size changes
- Works with motors and gas engines for easy swaps