028996 - Miller .187 x .625 Woodruff Key Replacement Part

Genuine Miller Woodruff Key for Precision Machine Repair

The Miller 028996 Woodruff Key is a critical component designed for the maintenance and repair of Miller welding equipment. Measuring .187 inches in width and .625 inches in diameter (length), this semicircular key is engineered to lock rotating elements such as gears, pulleys, or sprockets to a shaft. By fitting precisely into a matching keyway cut into the shaft, it prevents independent rotation and ensures the efficient transmission of torque within your machine's internal mechanisms.

Using genuine OEM parts like this Woodruff key is essential for maintaining the integrity of your industrial equipment. Generic alternatives may lack the precise dimensional tolerances required for Miller machines, leading to loose fits, vibration, or premature failure of the keyway. This specific key is manufactured to Miller's exact specifications, ensuring a snug fit that withstands the shear forces encountered during operation. Whether you are performing routine maintenance or a critical repair on a wire feeder or power source, this component restores the mechanical reliability of your drive system.

Installation of the 028996 key is straightforward for qualified technicians. Its half-moon shape allows it to rock in the key seat, adjusting to the taper of the mating part for a secure hold. This self-aligning feature is particularly beneficial in complex assemblies found in heavy-duty welding power sources. Trust in the quality of Miller Electric replacement parts to keep your operations running smoothly and minimize downtime caused by mechanical issues.

Key Features:

• Exact dimensions (.187" x .625") for Miller equipment compatibility.


• High-strength material resists shearing and deformation.


• Crucial for synchronizing shaft and component rotation.


• Direct replacement for worn or sheared keys.