Oilgear D-411 Legacy Variable Displacement Pump

Oilgear D-411 Legacy Variable Displacement Pump is a proven two-way, variable displacement hydraulic pump intended for open-loop hydraulic systems, such as fluid power systems, where a smooth control of the pump speed, a constant pump output, and a robust service life are required. It comes as no surprise, therefore, that the Oilgear D-411 Legacy Variable Displacement Pump dates back to the company’s legendary “D Series.”

This pump is designed for precise variable displacement depending on the system requirement. Contrary to fixed displacement pumps, the D-411 pump will only provide the system with the amount of fluid needed for the operation being conducted. This will contribute to energy savings and the prevention of the generation of excessive heat in the system. The pump can be suited for operations that involve high velocity control.

As the maximum displacement per revolution stands at 24.09 cc, the Oilgear D-411 displacement pump can be considered suitable for use in situations requiring controlled flow instead of high flow rates. The maximum speed at which the displacement pump runs stands at 1800 RPM, and the maximum continuous operational pressure reaches up to 1500 psi. The two-way operational functionality of the pump makes it easier for it to reverse direction without using additional directional control valves.

The D-411 features Oilgear’s hallmark radial rolling piston design, which is renowned for its low internal leakage, superior wear resistance, and long service life. The overall pump construction comprises a positive variable delivery system, relief valves, and an Oilgear pintle-type suction and return valve. This helps ensure stable pressure, as well as protection from overload pressure, within the system.

Functioning applications of the Oilgear D-411 include machine tools, test rigs, and other production-related applications where precise speed control and consistent hydraulic performance are required. This makes it an ideal choice for applications where continuous operation without maintenance is a priority.