Woodruff Key for Cummins 6BTAA5.9-C178

The Woodruff key, part number 3009953, is a semi-circular mechanical fastener designed to ensure torque transmission between a shaft and a rotating component. By seating into a semi-circular slot on the shaft and a corresponding straight slot in the hub, it creates a positive connection that prevents rotational slippage. This design allows for self-alignment during installation and facilitates disassembly without damaging the shaft. It is commonly used to secure timing gears, flywheels, crankshaft pulleys, or injection pumps, ensuring these components rotate in synchronization with the engine.

This component is engineered for use with various Cummins engine models, including the 6BTAA5.9-C178, KTA38C-1050, QSM11-C335, and QSM19-C700. These engines are frequently utilized in heavy machinery, industrial cranes, and construction equipment. The part is manufactured to meet specific Cummins engineering standards regarding dimensions, tolerances, and hardness to withstand the shear and compression forces encountered during operation. Proper installation is necessary to maintain the integrity of the connection between the shaft and the attached component.

In mechanical systems, Woodruff keys serve as a critical link in the power transmission chain. Their specific shape allows them to tilt within the shaft groove, which helps to distribute stress and simplify the assembly process for various rotating engine components.