New DTH Hammers Have Fewer Parts for Simpler Service, Lower Costs
Rockmore International’s latest additions
to its ROK Series DTH Hammer product
line are the ROK 500 and 500Q 127-mm
(5-in.) diameter class hammers. Rock-
more says its innovative design reduces
the number of hammer components, thus
reducing the amount of component wear
points, making hammer service simpler
and less expensive. The ROK 500 is rated
for use with large compressors (24.1 bar /
350 psi at 28.6 m3/min / 1,038 scfm)
while the ROK 500Q is designed for small-
er compressors (24.1 bar / 350 psi at 23.4
m3/min / 850 scfm). Both units employ
Rockmore’s patented SonicFlow technolo-
gy which is claimed to optimize airflow by
streamlining the air path to minimize
backflow and turbulence, delivering more
energy to the piston. Unique lead threads
on the top sub and driver sub ensure easy
coupling and uncoupling of the hammer,
while optional back-reaming buttons on
the top sub offer increased drill life. The
ROK 500 and 500Q accept industry stan-
dard bits with 12-spline Ingersoll Rand
QL5 / QL50 shanks. Recommended bit
sizes range from 140 to 152 mm (5.5 to
6 in). These hammers are offered with
multiple pin connection options, including
2-3/8-in. API, 3-1/2-in. API and Cubex
28-pin with splines.
www.rockmore-intl.com
As featured in Womp 2011 Vol 01 - www.womp-int.com