... rig with capacity of 100m/nq capacity, suitable for soil testing, SPT testing Mini Crawler Drilling Rig. ... Suitabble for diamond core drilling, carbide core drilling, SPT test ... rpmDiameter of the drum: 145 mmDrum Circumferential velocity (two layers): 0.166,0.331,0.733,1.465 ... .1 kw/2000 rpm mini crawler drilling machine for soil testing, SPT testing