Gear pump

The volume is small, the structure is relatively simple, the cleanliness of the oil is not strict, and the price is relatively cheap; but the pump shaft is unbalanced, the wear is serious, and the leakage is large.

vane pump

Divided into double-acting vane pump and single-acting vane pump. The pump has uniform flow, stable operation, low noise, high pressure and volumetric efficiency compared to the gear pump, and the structure is more complicated than the gear pump.

Plunger pump

It has high volumetric efficiency, small leakage, can work under high pressure, and is mostly used in high-power hydraulic systems. However, the structure is complicated, the material and processing precision are high, the price is high, and the cleanliness of oil is high.

Finally, the hydraulic pump is the power component of the hydraulic system. It is driven by the engine or electric motor, sucking oil from the hydraulic tank, forming a component of the pressure oil discharge and sending it to the actuator; The structure is divided into a gear pump, a plunger pump, a vane pump and a screw pump.