... engine 179kw/2200rpm New-Generation Drilling Equipment- YDX Hydraulic Core Drills The YDX series of high-performance drills was designed for ... ,including well boring,directional drilling and geotechnical drilling. Four YDX models have been developed since 2005,using N-specification drill ... pipes to reach depths from 600 to 2200 meters.The YDX-5 is an independently developed,new-generation core drill ...