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The different types of hydraulic pump-vane pump, gear pump, piston pump

Pubdate:2021-01-27 10:16:44 View:

1. According to the commonly used pump structure in hydraulic system, it is divided into three types: gear pump, vane pump and piston pump. 

2. According to whether the flow can be adjusted, it can be divided into: variable pump and fixed displacement pump. The output flow can be adjusted according to needs is called a variable pump, and the flow cannot be adjusted is called a fixed displacement pump.

What's the feature of those different types of pump?

Gear pump: small in size, simple in structure, less demanding on oil cleanliness, and cheaper in price; but the pump shaft is subject to unbalanced force, severe wear and large leakage.

Vane pump: divided into double-acting vane pump and single-acting vane pump. This kind of pump has uniform flow, stable operation, low noise, higher working pressure and volumetric efficiency than gear pumps, and more complicated structure than gear pumps.

Piston pump: high volumetric efficiency, small leakage, can work under high pressure, mostly used in high-power hydraulic systems; but the structure is complex, the material and processing accuracy requirements are high, the price is expensive, and the oil cleanliness requirements are high.


The hydraulic pump is the power component of the hydraulic system. It is driven by an engine or an electric motor, sucks oil from the hydraulic oil tank, forms pressure oil and discharges it, and sends it to the actuator. According to the structure, hydraulic pumps are divided into gear pumps, piston pumps, vane pumps and screw pumps.

There are many factors that affect the service life of the pump. In addition to the design and manufacturing factors of the pump itself, it is also related to the selection of some pump related elements (such as couplings, oil filters, etc.), and the operation during trial operation.

Shenzhen Eddie Hydraulic has all the type of pump, if you are looking for the hydraulic pump, you can send us the name plate or model to us, we can quote for you. Feel free to contact me by whatsapp +86 18926478344.

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