Remote-control Crawler Drill
Hütte Bohrtechnik has introduced a selfcontained, fully hydraulic crawler drill rig
model. Similar in size to its HBR 203
model, the radio remote-controlled Hütte
HBR 202 can be powered by an onboard
electric motor or diesel engine, without
need for a separate power supply. Although
the 202 shares the same undercarriage
and telescoping mast as the 203, the HBR
202 also offers unique kinematics
resulting from an upper structure that
rotates 140° left and right and extends fore
and aft 350 mm. Another feature is a new
3-speed low profile rotary head that
provides 21,000 ft-lb of torque, with a
clearance requirement to the front face of
less than 12 in. (305 mm). The telescopic
drill mast provides a feed length from 4
to 8 ft (1.2 to 2.4 m) with a feed force
of 8,500 lb (38 kN) and pullback of
14,000 lb (62 kN). All drill movements
from tramming to mast positioning are
“softly”controlled through a 32-gpm loadsensing piston pump. The electric version
of the HBR 202 features a 74-hp (55-kW)
motor requiring a 440/480-v, 60-Hz,
three-phase power source. A version of the
202 equipped with a 100-hp (74.5-kW)
diesel engine will soon be available as well.
The HBR line has a wide application range
that includes overburden and rock drilling,
augering, coring, exploration drilling,
geothermal drilling and injection drilling.
www.casagrandegroup.com/hutte
As featured in Womp 2013 Vol 08 - www.womp-int.com
