HD4001x Hydraulics - main applications: AIRMAN AX (Minibagger/Compact Excavators). HITACHI EX- Serie (Raupenbagger / Crawler Excavator), FH- Serie (Raupenbagger / Crawler Excavator), ZAXIS-Serie (Raupenbagger / Crawler Excavator), ZX- Serie (Mobilbagger / Wheel Excavator). KUBOTA KX-Series (Min