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| Low noise crawler at work Atlas Copco is set to launch the world’s first ROC series surface drill rig with a substantially reduced noise level making it the quietest-running rig of its kind. The Silenced ROC, which will be introduced in September 2005, has a noise level of approximately 10 dB(A) below that of other rigs on the market, which enables it to be used in very restricted worksites in urban areas. Combined with lower fuel consumption and increased drilling capacity, the new Silenced ROC – designated as an option on ROC D7 C – represents a major step forward for the drillers’ working environment and an ideal choice for small and medium-sized quarries and civil engineering work sites. In many countries, strict noise restrictions are imposed for drilling in urban areas. This presents new opportunities for companies using Atlas Copco’s new Silenced ROC. The rig’s Silencing Kit reduces the noise level by more than 10 dB(A) which makes it possible to drill virtually anywhere. Drilling noise is generated by vibration in the drill steel, feed system, boom and body of the rig. The advanced silencing system consists of many components which reduce the overall noise level, but the most noticeable is the hood that covers the mast. The advanced and more efficient hydraulic system together with the new, more powerful engine (CAT 6.6) makes it possible to lower the idling rpm and to choose the optimal power needed for drilling in different rock conditions. This makes it possible to lower the fuel consumption by up to 30 % compared to similar rigs on the market. The popular ROC D7C is operated by a digital RCS system. This system is now upgraded and the new version makes it possible to increase the shift capacity through faster positioning. write your comments about the article :: © 2005 Construction News :: home page |