A10VO 32 Hydraulic Open circuit pumps_Rexroth Axial piston variable Medium pressure pump

Control devices

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.
Basic position in depressurized state:Vg max.
Setting range1) for pressure control 20 to 280 bar.

DRG – Pressure controller, remotely controlled
For the remotely controlled pressure controller, the LS pressure limitation is performed using a separately arranged pressure relief valve. Therefore any pressure control value under the pressure set on the pressure controller can be regulated. Pressure controller DR see page 9.
A pressure relief valve is externally piped up to port X for remote control. This relief valve is not included in the scope of delivery of the DRG control.
A differential pressure of 20 bar Δp (standard setting) results in a pilot oil flow of approx. 1.5 l/min at port X. If another setting is required (range from 10 - 22 bar) please state in plain text.
As a separate pressure relief valve (1) we recommend:
A direct operated, hydraulic or electric proportional one, suitable for the control fluid mentioned above.
The maximum line length should not exceed 2 m.
Basic position in depressurized state:Vg max.
Setting range1) for pressure control 20 to 280 bar (3).
Standard is 280 bar.
Setting range for differential pressure 10 - 22 bar (2)
Standard is 20 bar.
Unloading port X to the reservoir results in a zero stroke pressure (standby) which is approx. 1 to 2 bar higher than the defined differential pressure Δp, however system influences are not taken into account.
Standard is 280 bar.

Technical data

Optimized medium pressure pump for high power machines.

Sizes 45 to 180.

Nominal pressure 280 bar.

Maximum pressure 350 bar.

Open circuit.

Features

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

Flow is proportional to the drive speed and displacement.

Flow can be infinitely varied by controlling the swashplate angle.

Hydrostatically unloaded cradle bearing.

Port for measurement sensor on high pressure port for all sizes with port plate 22 and 32.

Low noise level.

Increased functional reliability.

High efficiency.

Good power to weight ratio.

Universal through drive for all sizes with port plate 22 and 32.

Optional pulsation damping.