October - November 2013
MODERN QUARRYING
11
Above:
The operator cab is well
insulated at less than 80 dB (A). Along
with all Cat machines, high safety
features are incorporated throughout,
with excellent site visibility, coupled
with ease of maintenance and ground-
level access to all service points.
The Cat MD5150 is fitted with a Tier III
Cat C11 engine generating 287 kW at
1 800 rpm.
entation production
the ability to interchange components between
machine classes is one of Caterpillar’s core research
and development philosophies. Beginning from
the first quarter of 2014, for example, the Cat
MD6640 will feature a Cat 390D L excavator style
undercarriage as a standard factory fitment.
Complementing the rotary series, Caterpillar
fields five hydraulic track-mounted drills for con-
struction and quarrying, starting with the Cat
MD5050 (51 to 102 mm hole diameter) with the
latest model to debut being the range topping
MD5150 (89 to 152 mm hole diameter drilling, with
a maximum hole depth of 30 m).
A new release from Denison directly aimed at
the quarrying segment, the Cat MD5150 has the
largest compressor in its class, allowing for maxi-
mum flushing power, with a high pressure rating
of 15,1 m³/min at 9,6 bar. A larger compressor
naturally translates into more air flow, with the
machine’s dust collector system powered to clean
holes up to 152 mm, which means a cleaner hole
for insertion of the explosives. The MD5150’s sealed
pick up pot prevents cuttings from escaping above
the hole.
The machine is fitted with a Tier III Cat C11
electronically controlled, six-cylinder inline turbo-
charged, water-cooled engine generating 287 kW
at 1 800 rpm.
From a parts commonality perspective, the
MD5150 rides on the Cat 315C undercarriage sys-
tem, and has a dual tram speed of 4,0 km/h. As
with Caterpillar’s standard Heavy Duty and General
Duty undercarriage, the MD5150 is equipped with
the Cat Grease Lubricated Track (GLT) system. In
terms of the latter, each track joint is sealed to
retain the grease between the pin and bushing,
preventing frozen or seized track joints. Overall
system wear life is enhanced due to sprocket wear
improvements.
Another distinctive feature on the Cat MD5150
is a new six-rod carousel rod changer design,
enabling the machine to reach further and drill
deeper while maintaining stability. The boom sys-
tem has a swing capability of 9,0° left to 29° right,
maintaining wide pattern coverage for the opera-
tor. Joystick controlled with the exception of stan-
dard levers for undercarriage track operations, the
operator cab is well insulated at less than 80 dB (A).
Along with all Cat machines, high safety fea-
tures are incorporated throughout, with excellent
site visibility, coupled with ease of maintenance
and ground-level access to all service points.
At the business end is the Cat standard
HPR5128 hydraulic powered percussion rock drill
rated at 28 kW output energy with dual hydraulic
variable rotation motors producing 1 898 Nm of
torque.
Drill steel diameters are 51 mm, 60 mm and
68 mm, respectively, with drill steel rod lengths of
either 3,66 mor 4,27 m together with a 6,1 m starter
rod. Notably, the carousel’s unique gate design
always keeps a rod in the ‘ready to load’ position,
ON THE
COVER
