 ##  [Coupling Hub](/coupling-hub) 

  ##  [Coupling Hub](https://engineering.quantumdictionary.io/coupling-hub-0) 

  
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**Engineering &amp; Applied Technologies Dictionary**

 
Definition

The central body of a shaft coupling designed to attach to a shaft and to transmit torque to a mating hub or coupling element; it provides the mechanical interface (keyway, clamp, press fit or spline) and alignment features required for power transmission between rotating elements.