New Rotation Unit for Atlas Copco DTH/ITH Drill Rigs


Atlas Copco Rock Drills has introduced a new rotation unit for drilling blastholes in the 92-203 mm range. The DHR 6 is the latest model in the company’s DHR series and meets customers’ increased demands for air pressure of up to 35 bar with maximum torque of 6 Nm. This rating, according to the company, means the unit will allow a DTH (down-the-hole) hammer to be run at much greater power, significantly accelerating the drilling rate. The DHR units are hydraulically powered and suitable for use with any type of DTH hammer in the 92-203 mm range as well as ITH (in-the-hole) underground production work. The DHR 6’s design has been improved for maintenance and serviceability, allowing air inlet seals to be more easily replaced and providing inspection holes and hatches for checking possible oil leakage. The unit can be mounted on Atlas Copco ROC L625, ROC L630, ROC L825 and ROC L830 surface crawler rigs and is also suitable for all Simba ITH production drill rigs.

www.atlascopco.com

As featured in Womp 08 Vol 9 - www.womp-int.com