Description
If you’ve ever had a pulley, flywheel, or gear slip on a shaft when you needed it most, you know how important a properly fitted woodruff key is. This little semicircular piece of steel might not look like much, but it’s what keeps rotating parts locked in position on crankshafts, PTO shafts, and other critical rotating components. When one shears or wears out, you’ll know it right away.
What You’re Getting
- Precision-cut 1/4 inch width by 3/4 inch length dimensions for proper shaft engagement
- Heat-treated steel construction that handles the shock loads of tractor work
- Semicircular design sits flush in matching keyways for secure positioning
- Standard size fits a wide range of agricultural equipment applications
Built for Real Farm Work
This woodruff key is commonly used in tractor engines, PTO drives, hydraulic pumps, and various rotating assemblies across most major tractor brands. Whether you’re dealing with a loose flywheel, slipping PTO pulley, or any shaft-to-hub connection that needs positive lock-up, this is the size that shows up in a lot of applications from compact tractors to mid-size row crop machines.
Made to Last
The steel is heat-treated to handle the twisting forces and shock loads that come with tractor work. Unlike cheaper keys that bend or shear under load, this one maintains its strength through seasons of hard use. The precision machining ensures it fits snugly in both the shaft and hub keyways without play.
Good to Know
Always check both the shaft and hub keyways for wear when installing a new woodruff key. A worn keyway can cause the new key to fail quickly. Keep the mating surfaces clean and free of burrs for the best fit. If you’re replacing one that failed, it’s worth checking what caused it to shear in the first place.




Reviews
There are no reviews yet.