A centrifugal pump consists of a few primary pieces of equipment. These are: Impeller – This is a rotor that increases the kinetic energy of the flow through the pump.
Casing – This contains the liquid and helps direct the flow in and out of the pump.
Shaft – The impeller is attached to the shaft, which carries torque from the motor to the impeller.
Shaft Sealing – As pumps contain liquid, sealing is necessary in order to prevent spillage or leaking.
Bearings – Bearings come in several types, which work slightly differently from each other but all work to essentially reduce friction between moving parts and constrain the motion of the shaft.