The hydraulic pump is the power element of the hydraulic system. Its function is to provide pressure oil to the hydraulic system.
From the perspective of energy conversion, it converts the mechanical energy output by the prime mover (such as the engine) into the pressure energy of the liquid that is easy to transport.
The hydraulic motor is an executive element, which can convert the pressure energy of the input liquid into the mechanical energy of the output shaft rotation, which is used to drag the load to do work. According to the structure, hydraulic pumps and hydraulic motors can be divided into gear type, vane type, plunger type and other types.
