Rexroth A4VG28 A4VG40 A4VG56 A4VG71 A4VG90 A4VG125 A4VG180 A4VG250 Hydraulic Piston Pump,A4VG Series Oil Variable Pump,A4VG125 Piston Pump

1. The flow is proportional to the drive speed and displacement.

2. The flow can be infinitely varied by adjusting the swashplate angle.

3. Flow direction changes smoothly when the swashplate is moved through the neutral position.

4. A wide range of highly adaptable control devices with different control and regulating functions, for all importantapplications.

5. Two pressure-relief valves are provided on the high-pressureside to protect the hydrostatic transmission (pump and motor) from overload.

6. The high-pressure relief valves also function as boost valves.

7. The integrated boost pump acts as a feed pump and controlpressure supply.

8. The maximum boost pressure is limited by a built-in lowpressure relief valve.

9. As standard with integrated pressure cut-off

A4VG pump main control

According to the different types of control valves on the pump, the A4VG pump has various control modes. The following are common control methods:

– HW manual control: The pump displacement is proportional to the angle of the control valve handle.

– EP Electric Proportional Control: The pump displacement is proportional to the current signal of the proportional solenoid.

-HD hydraulic control type: Pilot-controlled hydraulic control, the displacement of the pump is proportional to the pilot pressure.

APPLICATION

Piston pumps are widely used in high-pressure, high-flow, high-power systems and where the flow needs to be regulated, such as mobile and construction equipment, engineering vehicles, heavy-duty planers, metal forming and stamping, machine tools, hydraulic presses, oilfield equipment, mining and metallurgical machinery, marine and other hydraulic systems.