There are usually three types of hydraulic pump constructions found in mobile hydraulic applications. Included in these are equipment, piston and vane; however, there are also clutch pumps, dump pumps and pumps for refuse automobiles such as 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 is taken from what’s called the prime mover (a turning power) such as the power take-off or directly 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 Hydraulic Pump china rotation. However, a bi-rotational pump has the capacity to operate in either direction.