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Rockmore announces ROK 500 and 500Q

February 25, 2011  By Groundwater Canada


Rockmore announces ROK 500 and 500Q
Rockmore International has announced the latest additions to its ROK Series DTH Hammer product line – the ROK 500 and 500Q.



Jan. 3, 2011 – Rockmore International has announced the latest additions to its ROK Series DTH Hammer product line – the ROK 500 and 500Q. These new patented 127-millimetre (five-inch) diameter class hammers will be officially released at Conexpo-Con/Agg in Las Vegas on March 22, 2011.

“Our mission is to provide our customers with the finest quality equipment possible, and ensure it integrates fully with their drilling operations,” said Pejman Eghdami, executive vice president of Rockmore International. “The release of the ROK 500 and 500Q expands the full range of our DTH hammer line from three-inch to eight-inch diameters.”


Designed to increase drilling efficiency in mining, blast hole, construction, quarry, water well and geothermal applications, the ROK 500 accommodates two different air packages, to match any working conditions. The ROK 500 hammer is rated for use with large compressors: 24.1 Bar (350 PSI) at 28.6 m3/min (1038 SCFM). The ROK 500Q hammer is designed for smaller compressors: 24.1Bar (350PSI) at 23.4 m3/min (850 SCFM).

Rockmore says the 500 and 500Q take full advantage of the company's patented SonicFlow technology, which optimizes airflow by simplifying and streamlining the air path to minimize backflow and turbulence, thus delivering more energy to the piston. Optional back reaming buttons on the Top Sub offer increased drill life. Field testing of the SonicFlow design was found to result in faster penetration rates and greater overall efficiency.

The company says the ROK 500 and 500Q have been built to withstand the toughest rock drilling conditions. The solid piston design is made from an advanced material that is case hardened, combining high strength with supreme wear resistance. The high frequency, reciprocating piston is designed to strike the bit with maximum force. A new design, unique to Rockmore hammers, reduces the number of hammer components, thus reducing the amount of component wear points, which the company says makes hammer service simpler and less expensive.

The ROK 500 and 500Q are 127mm (5 in) diameter class hammers which accept industry standard drill bits with 12 spline Ingersoll Rand QL5 / QL50 shanks. Recommended bit sizes range from 140 to 152 (5.5 to 6.0 in).  These new hammers are offered with multiple pin connection options: 2 ⅜" API Reg Pin, 3 ½" API Reg Pin and CUBEX #28 pin with splines.

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