Axial piston variable displacement

In closed loop circuits, the return line (i.e. the suction line of the pump) is under pressure. This must be incorporated in the design of axial piston units used in closed loop systems. It is also imperative to have a variable displacement volume hydraulic pump in operation in these systems.

When you use a pilot-operated, electro-hydraulic controlled pressure or flow regulator, the outflow of the pump depends on system pressure, flow or a combination of both (i.e. power control). If the hydraulic system pressure reaches above a predetermined pressure setting, the flow of the pump returns to zero and the system pressure is maintained constant.

By doing so, the power lost in the system is low and the energy consumption of the drive system is minimal at maximum pressure. Note that a combination of flow and pressure regulation permits designing very economic drives (e.g. load sensing).

Damen Technical Agencies, B.V., also known as DTA Hydraulics, is a highly-specialised engineering sales company with core competence in hydraulic parts, equipment and machinery.

DTA has been serving your industry with the supply of hydraulic parts, components and as a Parker distributor hydraulics for more than 30 years. In 2010 we were fully qualified and certified as a distributor of hydraulics by Parker Hannifin. Together we developed a rapid delivery program for the genuine Denison Hydraulics Vane Technology.

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