ET-40 Hydraulic Rock Tool
Starting Diam: 1000mm / 40 in
Final Diam.: 2500mm / 96 in
Radial Thrust Force: 45 ton / 99200 lbf
The new ET-40 hydraulic rock tool combines effi¬ciency, performance and productivity in rocky soil drilling.
It is equipped with the most suitable rock-cutting tools, selected according to the specific geology of the ground in such a way to obtain the best possible advance rates with minimal cutting tools replacements.
Starting from a pilot hole, it can enlarge the hole up to the required diameter.
The radial thrust of the arms allows to push with high force without using traditional vertical vibration.
The functioning of the rock tool is simple, the roller bits are fitted on diametrically opposed arms that simultaneously open outwards.
The arms are moved by hydraulic cylinders designed to transmit intensive impact energy, needed by the roller bits for breaking the rock. This innovative system designed to perform large diameters will not only increase productivity, but also offers a more cost effi¬cient solution by reducing cost and room of compressors and DTH.
The ET-40 has been specifically designed to enlarge holes from 1000mm up to 2500mm with two steps, the same principle can be proposed for different diameters.