... civil construction, geological exploration, large diameter boring pile and small diameter diamond core deep hole drilling.Main FeaturesWide range of reasonable ... -1500Drilling Depth (m)1200-1500Drilling Rod Diameter(mm)Φ42 Φ50Dip Angle of Hole (°)0-360Cylinder Stroke (mm)400Spindle Speed ... 310,378, 415,570,808,1081Reverse: 58,152Spindle Hole Diameter (mm)Φ95Spindle Output Torque(N.M)5200 or 6300Spindle ...