Description
If you’ve ever had a pulley slip on a crankshaft or watched your PTO suddenly stop transmitting power, you know how important that little half-moon key really is. This 3/16″ x 1″ woodruff key is what keeps your pulleys, flywheels, and drive components locked in place on the shaft. When it shears or walks out, your whole operation comes to a halt until you get it replaced.
What You’re Getting
- Precision-cut half-moon shape fits standard keyway slots perfectly
- Heat-treated steel construction handles the torque and vibration of farm equipment
- 3/16″ width and 1″ length fits common tractor applications
- Direct replacement for worn or damaged keys – no modifications needed
Built for Real Farm Work
This size woodruff key is commonly found in older tractors, compact utility tractors, and various implement drive systems. You’ll see them on engine crankshafts where pulleys mount, PTO shafts, and other rotating assemblies that need positive drive without slipping. Whether you’re running a hay baler, bush hog, or generator PTO, this key keeps everything turning together like it should.
Made to Last
Farm equipment puts serious stress on drive components, and a cheap key that fails at the wrong time can cost you hours or even days. This woodruff key is made from quality steel that’s heat-treated to handle the shock loads and constant vibration that come with agricultural work. It’ll hold up to years of service in tough conditions.
Good to Know
Installing a woodruff key takes a gentle touch – tap it into place with a brass drift or dead blow hammer, never use a steel hammer directly on the key. Make sure both the keyway and key are clean before installation. Keep a spare or two in your toolbox because they always seem to fail at the worst possible time, like when you’re trying to finish cutting hay before the weather turns.
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