Rockmore International’s newest addition to its T Series DTH hammer line is the ROK 550T. The Rockmore T Series DTH hammers are ‘tubeless’ and use drill bits with industry standard shank connections 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” class model that uses a tubeless QL6/QL60 bit shank. Last year it released the 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” class hammer model which uses the industry standard 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” (140 to 152 mm) diameter holes, the ROK 550T is suitable for blasthole applications in mining and for deep hole drilling in the water-well and geothermal sectors.

The 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 delivering 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.