A10VO Medium pressure Axial piston variable pump , Open circuit pumps

Control device

DG – Two-point control, direct operated
The variable pump can be set to a minimum swivel angle by connecting an external control pressure to port X.
This will supply control fluid directly to the stroking piston; a minimum control pressure of pst ≥ 50 bar is required.
The variable pump can only be switched between Vg max or Vg min.
Please note that the required control pressure at port X is directly dependent on the actual working pressure pB in port B. (See control pressure characteristic).
The maximum permissible control pressure is 280 bar.

DR – Pressure controller
The pressure controller limits the maximum pressure at the pump outlet within the control range of the variable pump.
The variable pump only supplies as much hydraulic fluid as is required by the consumers. If the working pressure exceeds the pressure command value at the pressure valve, the pump will regulate to a smaller displacement to reduce the control differential.
Initial position in depressurized state: Vg max.
Setting range1) for pressure control 20 to 280 bar.
Standard is 280 bar.

Technical data

Size 18 (A10VSO).

Sizes 28 to 140 (A10VO).

Nominal pressure 280 bar.

Maximum pressure 350 bar.

Open circuit.

Features

Variable pump with axial piston rotary group in swashplate design for hydrostatic drives in open circuit.

The flow is proportional to the drive speed and displacement.

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

2 drain ports.

Excellent suction performance.

Low noise level.

Long service life.

Favorable power/weight ratio.

Versatile controller range.

Short control time.

The through drive is suitable for adding gear pumps and axial piston pumps up to the same size, i.e., 100% through drive.