... Rig. 1,Driving type:pneumatic and hydraulic 2,Crawler DTH drilling rig 3,CE,ISO9001 4.Warranty ... ,All Pneumatic crawler drilling rig2,Hydraulic crawler drilling rig3,Integrated crawler drilling rig4,Truck mounted water well crawler drilling rig5,Crawler water well ... and rotating system of Dayu Crawler Drilling Rig New type swing mechanism constituted by cycloidal hydraulic motor and planetary gearbox. ...