Rock Products

APR 2018

Rock Products is the aggregates industry's leading source for market analysis and technology solutions, delivering critical content focusing on aggregates-processing equipment; operational efficiencies; management best practices; comprehensive market

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42 • ROCK products • April 2018 EQUIPMENT & TECHNOLOGY DRILLING & BLASTING Rockmore International will introduce the newest addition to its T-Series DTH hammer line – the ROK 550T – to the European market at the Intermat exhibition held in Paris this month. The Rockmore T-Series DTH hammers are "tubeless" and utilize drill bits with industry standard shank connec- tions without the imbedded plastic blow tube/foot valve. Rockmore revolutionized the drilling industry with the launch of its first T-Series DTH model, the ROK 600T, a 6-in.- class model that uses a tubeless QL6/QL60 bit shank. Last year the company released its ROK 60T-360T hammers that utilize the IR 360 bit shank without the blow tube/foot valve. Now, Rockmore extends the T-Series to the new ROK 550T, a 5-in.-class hammer model which uses the industry stan- dard QL5/QL50 bit shank, but with the blow tube/foot valve removed. With high-performance drilling characteristics rated for drilling 5.5- to 6.0-in. (140- to 152-mm) diameter holes, the ROK 550T is suitable for blast-hole applications in the mining and construction sectors and for deep hole drilling. As with all Rockmore DTH hammers, the new ROK 550T takes advantage of Rockmore's patented SonicFlow technology, which optimizes airflow by simplifying and streamlining the air paths to minimize back flow and turbulence, thus deliver- ing more energy to the piston. Field testing of the SonicFlow design was determined to result in faster penetration rates and greater overall DTH hammer efficiency. Rockmore International, Komatsu Invests In Surface Drill Product Line Komatsu announced it is accelerating the development of smaller drills for surface mining applications. Furthering its commitment to be a full solutions provider to the mining industry, Komatsu is expanding its P&H product line to include articulat- ing boom track drills. The first machine in the series, the 44XT, is now being tested at the company's Arizona Prov- ing Grounds prior to release later this year. The 44XT is capable of drilling 4- to 8-in. (102- to 203-mm) diameter holes using down-the-hole (DTH) per- cussive hammers. "The development of the XT series of DTH track drills complements our plans for the new XR series of rotary blast- hole drills, led by the 77XR that also is in operation at the Arizona Proving Grounds," said Brian Fox, vice president of product management and technology for Komatsu Mining Corp.'s surface divi- sion. "These programs, combined with our accelerated effort on drill automa- tion enabled by Komatsu's experience and resources, demonstrate a strong commitment to building our drill portfolio." Komatsu introduced the 77 drill model at MINExpo 2016 and has since renamed it the 77XR to reflect its versatility for the rotary blasthole market. The 77XR was designed to accommodate the largest spectrum of blasthole drilling from coal to hard rock applications. The 44XT machines now in develop- ment will be for use in surface mines and quarries, and are ideally suited for pre-split drilling applications. They can also be used for production drilling in smaller mines and large quarries, open- ing a new market segment for Komatsu. "The 44XT drill delivers upon what you would expect from a P&H machine," said Matt Collins, product director – drills for Komatsu Mining Corp. "It starts with a safety-focused ergonomic machine layout that sits on a robust core design. We matched structural integrity with increased horsepower and compres- sor capacity, translating into higher torque and speeds for optimal drilling performance. The 44XT's configura- tion versatility, and increased range of motion, give users a large range of options for percussive hammer drilling." Komatsu, Rockmore Offers New Tubeless DTH Hammer

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