... ,High efficiency 3,hydro-automatic feeding device XYX-3 Core Drilling Rig: Application scope Used for general investigation, geophysical exploration, high- ... applicable to working conditions in plain and mountain areas. Drilling depth300-600mMaximum open hole diameter300mmEnd hole caliber75Drill rod caliber60mmDrilling angle90 ... engine/Electric engineR4105ZD 76HP/Y180L-4 22KW XYX-3 Core drilling rig