... powerstation, communication, energy and capital construction.FEATURES:Use hydraulic transmission, the body is separated from power pack, ... to make the drilling machine stable and reliable. Equipped with hydraulic holder and hand powered unscrewer, to untighen the ... Φ110mm,depth 100mHole dia Φ200mm,depth 80mType of hydraulic power packElectric motor,varibale oil pumpHydraulic system rated pressure ...