... drilling, hydro exploration drilling.Drilling Capacity 1) Hole diameter 75, 91,110,130,150 mm2) Drilling depth: 150,100,70,50,30 m2 ... 450 mmMax. spindle lifting speed without load 0.05 m/sMax. spindle downward without load 0.067 m/sMax. Feeding pressure: 15 knMax. ... drum: 145 mmDrum Circumferential velocity (two layers): 0.166,0.331,0.733,1.465 m/sDrum diameter 140 mmDiameter of the wire rope: 9.3 ...