What is the commonly used term for the rotating element in a centrifugal pump?

The commonly used term for the rotating element in a centrifugal pump is the impeller. The impeller is a critical component that converts the mechanical energy of the pump into hydraulic energy by imparting velocity to the fluid as it is drawn into the pump. When the impeller rotates, it flings the liquid outward due to centripetal force, increasing the liquid's kinetic energy and moving it through the pump and onto the discharge.

Understanding the role of the impeller is essential for grasping the operations of centrifugal pumps, as its design and speed significantly affect the pump's performance, including flow rate and pressure generation.