Atlas Copco has announced the availability of a newly upgraded silence kit for its SmartROC T35 and T40 surface drill rigs. The original kit was introduced in 2005, consisting of a distinctive hood enclosing the drill rod. The new silence kit, developed in cooperation with experienced users, reduces the noise generated from the feed by an additional 12 dB(A). Key improvements include a double layer of noise absorbent material together with an upgraded aluminum chassis that has greater resistance to drill rod vibration, according to the manufacturer.

Without the silence kit, the noise level of the SmartROC T35 and T40 is 127 dB(A) at peak power. With the upgraded silence kit added, tests show that the noise level drops to 115 dB(A), providing an improved working environment at urban construction sites and meeting current demands for lower noise levels. From an operational standpoint, this means that site personnel positioned at the recommended safety distance from the rig during operation can converse with colleagues without having to shout, can use a phone, and more easily hear other noise around them while still keeping their ear protection in place.

Besides better noise dampening, the new kit also is more functional than its predecessor. It has four access hatches, with a fifth at the very top of the feed. These can be opened two at a time at the touch of a button, allowing access for rod handling, inspection of coupling sleeves or service. In addition, the kit also has been equipped with an improved lighting system.

For more information, call 800/732-6762 or visit www.atlascopco.us.