A4VSO40DR/10R-PPB13N00 , Axial piston Hydraulic pumps
Pressure controller DR
(for further information, see data sheet 92060)
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 range for pressure control: 50 to 350 bar.
Standard is 350 bar.
Filtration of the hydraulic fluid
Finer filtration improves the cleanliness level of the hydraulic fluid, which increases the service life of the axial piston unit.
A cleanliness level of at least 20/18/15 is to be maintained according to ISO 4406.
At a hydraulic fluid viscosity of less than 10 mm2/s (e.g. due to high temperatures during short-time duty) at the drain port, a cleanliness level of at least 19/17/14 according to ISO 4406 is required.
For example, the viscosity corresponds to 10 mm2/s:
–– HLP 32 a temperature of 73 °C
–– HLP 46 a temperature of 85 °C
Technical data
Robust high-pressure pump for industrial applications.
Size 40 ... 1000.
Nominal pressure 350 bar.
Maximum pressure 400 bar.
Open circuit.
Features
Variable pump with axial piston rotary group of swashplate design for hydrostatic drives in open circuit.
Flow is proportional to the drive speed and displacement.
The flow can be infinitely varied by adjusting the swashplate angle.
Excellent suction performance.
Low noise level.
Long service life.
Modular design.
Variable through drive options.
Visual swivel angle indicator.
Freely variable installation position.
Suitable for variable-speed drives.
HF mode for reduced data possible for HFC mode,special version available.
