Hydraulic power pack with LS variable and constant displacement pump combination

The hydraulic power pack is suitable for all basic tests of mobile hydraulics. The two pumps are both driven by one electric motor. The vane pump with adjustable delivery rate has a load sensing pump controller. The fixed displacement pump is secured by a pressure relief valve.

The pump/motor unit sits on the tank. The return into the tank passes through a return flow filter. The ventilation of the tank is also filtered. The oil level can be seen on the sight glass with temperature display. The motor is switched on and off from a control console and is safeguarded against overloading.

Adjustable parameters

Designation Range Default value
Revolution 0 ... 5000 1/min 910
Variable displacement pump
Designation Range Default value
Displacement 0 ... 10000 cm3 5.6044
Opening pressure 0 ... 40 MPa 5
Spring preload 0.1 ... 10 MPa 1.17
Leakage 0.0001 ... 10 l/(min.bar) 0.028333
Fixed displacement pump
Designation Range Default value
Displacement 0 ... 10000 cm3 4.5055
Opening pressure 0 ... 40 MPa 5
Leakage 0.0001 ... 10 l/(min.bar) 0.003333