XCMG Rotary Drilling Rig with Cummins Engine, Drilling Depth of 51M and Telescopic Crawler Undercarriage XR series of rotary drilling rigTechnical Features: •Telescopic crawler chassis, box type frame, suitable rigidity, good stability.•Automatic slewing positioning function•Load sensing hydraulic system.•Color LCD, automatic measuring of the boring depth and vertical rake, and automatic alarming ...