... line core drilling and reverse circulation drilling, we have designed XY-4-3 spindle type core drilling rig. It is ... developed on XY-4 drill. The central opening dia of drill head ... 37kW,1480r/min Y200L2-6,22kW,980r/minDimensions (L×W×H,mm)2700×1000×1750Weight(less power, kg)2000Remarks:Technical ... do not consider power losses. Water Well Drilling Rig XY-4-3A(HOT)