Woodruff key meaning

A Woodruff key is a specific type of key used to secure a rotating shaft to a hub in mechanical applications.


Woodruff key definitions

Word backwards ffurdooW yek
Part of speech The word "Woodruff key" is a noun.
Syllabic division Wood-ruff key
Plural The plural of the word Woodruff key is Woodruff keys.
Total letters 11
Vogais (3) o,u,e
Consonants (6) w,d,r,f,k,y

Woodruff key is a small, semi-circular, and offset key that is commonly used in machinery to secure a pulley, gear, or other rotating components to a shaft. It provides a non-slip connection and ensures that the component rotates with the shaft.

The Woodruff key is inserted into a slot that is milled into the shaft and the component, creating a mechanical interference fit that prevents relative motion between the two parts. This design is especially useful in applications where high torque or vibration is present.

Design and Application

The design of a Woodruff key allows for easy installation and removal without the need to disassemble other components of the machinery. Its unique shape prevents the key from rotating within the keyway, providing a secure and reliable connection.

Materials and Sizes

Woodruff keys are typically made from carbon steel, stainless steel, or brass, depending on the application requirements. They come in various sizes to accommodate different shaft diameters and keyway dimensions.

Keyways are usually milled into the shaft and the component using specialized tools to ensure precision and alignment. This process requires expertise and attention to detail to guarantee a proper fit and functionality of the key.

Benefits of Woodruff Keys

Woodruff keys offer several advantages, including easy installation, high torque transmission capability, and resistance to axial movement. They are also more compact and discreet compared to other types of keys, making them ideal for applications with space constraints.

In conclusion, Woodruff keys play a crucial role in securing rotating components to shafts in various machinery applications. Their unique design and properties make them a popular choice for transmitting torque efficiently and reliably.


Woodruff key Examples

  1. The woodruff key in the engine shaft prevented it from slipping.
  2. She used a woodruff key to secure the pulley to the shaft.
  3. The mechanic replaced the worn-out woodruff key with a new one.
  4. Make sure to align the woodruff key properly before tightening the fasteners.
  5. The woodruff keyway was machined precisely to ensure a snug fit.
  6. Without a woodruff key, the gear might have slipped during operation.
  7. The woodruff key groove on the shaft was a perfect match for the key.
  8. She carefully tapped the woodruff key into place using a hammer.
  9. It's essential to check the woodruff key for wear regularly.
  10. The woodruff key provides a secure connection between the components.


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  • Updated 18/04/2024 - 14:08:14