... testing Mini Crawler Drilling Rig.Suitabble for diamond core drilling, carbide core drilling, SPT test drilling, small water well drilling, hydro exploration drilling.Drilling Capacity 1) Hole ... : 150,100,70,50,30 m2. Rod Dia. 42 mm3. Drilling Angle 90° ~ 75°4 Rotary UnitSpindle Speed (4 shift) 71,142 ... . Power Diesel Engine 12.1 kw/2000 rpm mini crawler drilling machine for soil testing, SPT testing