... of 100m/nq capacity, suitable for soil testing, SPT testing Mini Crawler Drilling Rig.Suitabble for diamond core drilling, carbide core ... , hydro exploration drilling.Drilling Capacity 1) Hole diameter 75, 91,110,130,150 mm2) Drilling depth: 150,100,70,50,30 ... : 1500 rpm7. Power Diesel Engine 12.1 kw/2000 rpm mini crawler drilling machine for soil testing, SPT testing