An electric motor (P1) drives a hydrostatic pump (not visible, inside the tank (P2)). The oil supplied by the pump flows over the control block with integrated high pressure filter (P3) to the scroll drive (R). The return oil flows over the cooler (P4) back to the tank (P2).

The control block (P3) regulates the oil flow to the scroll drive (R); and varies the differential speed in accordance with the preset control characteristics.

Table l


Table ll


Table IV