This hydraulic station is for  Hydrostatic bearing lubrication of mill. One set of mill is equipped with one set of hydraulic station. It consists of three high-pressure oil supply system, two low-pressure recycling system and two pinion bearing lubrication system. high-pressure oil supply systems provides hydrostatic support and lubrication to the trunnion bearing at two ends of mill respectively,；pinion bearing lubrication system supply oil for the pinion bearing；low-pressure recycling systems are for recycling filtering and cooling.