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Benefits of a Fixed-Displacement Hydraulic Pump 15## November 2019

When choosing a hydraulic pump solution, it is essential to determine the type of work to be performed and the amount of pressure required. All hydraulic systems rely upon pressurized fluid to create force in order to perform work, such as lifting materials using a forklift. Furthermore, systems can either be “closed-loop” or “open-loop.”

In a “closed-loop” system, the fluid passes from the pump directly to the motor before returning to the pump. In an “open-loop” system, the pump draws fluid from a reservoir / tank then pumps it to a control valve from where it is directed to the services being operated before returning to tank.


For an open loop system a fixed-displacement hydraulic pump is one type of pump solution. It has several key benefits over variable displacement pumps, including:

  • Less Expensive
  • Easier to Maintain
  • Simpler Design
  • Flow rates directly proportional to pump drive speed.

Fixed-displacement pumps are well suited for a wide range of functions where the amount of pressure required to perform work is the same each and every time. Two common types of fixed-displacement pumps are the bent axis piston pump and the gear pump. The bent axis piston pump provides the added benefit of normally having a higher pressure capability than a gear pump.

Since the pressure and flow rates cannot be changed, you need to make sure to select the correct size fixed-displacement pump to suit your needs. For assistance in choosing the right size pump or for other hydraulic system solutions, call the experts at White House Products, Ltd. at +44 (0) 1475 742500 now!

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