Drilling Rig 1>Rock hardness:f=6~20 2>Bore Dia.(mm): ... 3>Motor power:40kw 4>G.W.(kg):4200 Cawler Drilling Rig, Portable Drill RigFeatures:1. Using the computer optimization design, the ... ×2000Matched Air CompressorHG550M-13G.W.( kg)4400Dust extractor Installed Cawler Drilling Rig, Portable Drill Rig, Drilling equipment HC726B