35
july-august 2014
international
construction
QU
AR
R
YING
Efficiency imperative
For example, Atlas Copco has added a range of eight new
drum cutter attachments for excavators for use in a range of
applications, including quarrying.
The DC drum cutter range is available with service weights
from 200 kg to 2,900 kg, covering carriers from 1 to 50 tonnes.
“Our drum cutters are an excellent choice for rock or concrete
wall and surface profiling, trenching, frozen soil excavation, soft
rock excavation in quarries, demolition, and dredging,” said
Gordon Hambach, product line manager at Atlas Copco. “They
are a complementary product to our hydraulic breakers and offer
an additional solution for softer rock
applications up to 100 MPa.”
Caterpillar meanwhile has brought two
new F-series excavators to market. The
new Cat 374F and 390F build on the
durability, reliability, and performance
of the D-series while offering low fluid
consumption for minimal operating
costs, according to the company.
Aimed at lesser regulated markets,
with Acert Stage II/ Tier 2 compliant
engines, the new excavators are fuel efficient, using up to -5%
less fuel that the D-series. The 374F and 390F both offer two
power modes – standard or economy. In addition, an on-demand
power system adjusts engine speed to match the operating load,
and an engine-idle-shutdown system stops the engine when
not in use.
Both models are available with a range of booms and sticks
Efficiency imperative
Atlas Copco’s new drum cutter
range is suitable for soft rock
excavation in quarries
The new Cat 374F and 390F hydraulic excavators
can be equipped with auxiliary hydraulic circuits,
allowing the use of powered work tools attached
with a hydraulically activated coupler.
In quarrying, efficient
extraction is all about
choosing the right mobile
equipment and crushing
and screening set-up.
Sarah McCay
reports.
Q
uarrying is a science that requires a specific set of tools
to ensure safety along with quality and efficiency in
extraction. All quarries are different, and each quarry
product presents its own extraction challenges. Choosing the
right equipment is therefore vital.
From mobile equipment such as excavators, loaders and dump
trucks, to hydraulic breakers and crushing and screening units,
each plays its part in a smooth quarry operation. Efficiency in
operation is of course a key aim for manufacturers of all types
of equipment.
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