Hydraulic pump is a hydraulic system of the power components, is driven by the engine or motor, from the hydraulic tank suction oil, the formation of pressure oil discharged, sent to the implementation of a component.
The hydraulic pump is a hydraulic element which provides the pressurized liquid for the hydraulic drive, and is a kind of pump. Its function is to convert the mechanical energy of the power machine (such as motor and internal combustion engine, etc.) to the pressure energy of the liquid. There are many factors that affect the service life of the hydraulic pump, besides the design of the pump itself, the factors of manufacture and the selection of the pump using related elements (such as coupling, oil filter, etc.).
The working principle of the hydraulic pump is that the movement brings about the change of the pump chamber volume, thus compressing the fluid to make the fluid have pressure energy. The pump must have the condition that the pump cavity has a seal volume change.