There are typically three types of hydraulic pump constructions found in mobile hydraulic applications. These Hydraulic Pump china include equipment, piston and vane; nevertheless, there are also clutch pumps, dump pumps and pumps for refuse automobiles such as for example dry valve pumps
The hydraulic pump is the element of the hydraulic system that takes mechanical energy and converts it into fluid energy in the form of oil flow. This mechanical energy can be taken from what is called the prime mover (a turning force) such as the power take-off or straight from the truck engine.
With each hydraulic pump, the 
pump will be of either a uni-rotational or bi-rotational design. As its name implies, a uni-rotational pump is made to operate in one direction of shaft rotation. However, a bi-rotational pump has the capacity to operate in either path.