... Core Drill are spindle-type drilling machines. XY-4 CORE DRILL XY-4 Series Core Drill is hydraulic-feeding spindle-type drilling ... for drilling medium water well and construction pile hole.Specifications XY-44HXY-1000XU-1000DRILLING CAPACITY Core Drilling Φ50 Drilling Rod1200m1000m900m Φ60 ... ,87,160,230,270,334155,275,375,500 (rpm) 257,316,371,610,871,1070500,710,1030610,820,1095,1232 Reverse42 ...