Hydraulic power unit requirements: the oil through a less pressure loss, less amounts of the oil leakage gap between the mouth commutation reliable, sensitive, Particularly in environmentally sensitive areas, it can provide an attractive alternative to diesel engine operated power packs. Hydraulic Power Pack. BAUER HE – Hydraulic Power Packs with Electric Drive option to the standard power pack. With its versatility and modularity, it offers many combinations of hydraulic circuits to suit vario