Three Quarters To Seven Eighths Shaft Adapter Kit With Bearings, Bearing Shells, And Bushings For Engine Pulley Crank Shaft Sleeve Keystock, Solid Steel Build For Quick, Reliable Fit

Single 3/4 to 7/8 Shaft Adapter Kit with Bearings & Key
✔️ Includes 3/4 to 7/8 shaft bushing, 3/16 step key, adapter

This shaft adapter kit is designed to connect a smaller engine crankshaft to a larger pulley or accessory, enabling speed and torque changes in pulley-driven machines. It supports quick retrofits without replacing motors or pulleys.

✅ Adapts 3/4 in to 7/8 in crankshaft diameter for engine pulleys
✅ Includes 3/16 in step key and adapter in the kit
✅ Solid steel construction for durability and reliable fit
✅ Designed to align shaft with pulley for smooth belt operation

💡What is a shaft adapter kit used for in mechanical drive systems?

It lets you couple a smaller crankshaft to a larger pulley to adjust speed and torque without replacing major components.

- Sealed ball bearing options improve longevity in rotating assemblies - Ceramic variants reduce friction for high speed setups - Useful for retrofitting engine cranks with different shaft diameters - Keeps alignment between shaft, pulley, and belt drive for smooth operation✝️