There are typically three types of Hydraulic Pump china hydraulic pump constructions within mobile hydraulic applications. These include gear, piston and vane; however, additionally, there are clutch pumps, dump pumps and pumps for refuse automobiles such as dry valve pumps
The hydraulic pump is the component of the hydraulic system that takes mechanical energy and converts it into fluid energy in the kind of oil flow. This mechanical energy can be taken from what’s called the primary mover (a turning power) such as the power take-off or straight from the vehicle 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 path of shaft rotation. However, a bi-rotational pump has the capacity to operate in either path.