international
construction
july-august 2014
QU
AR
R
YING
42
Efficiency imperative
F
irst, look at underfoot conditions. W
ill
the machine work on a hard, rocky
surface, where tyre cutting will be a
threat?
In that case, you would want a tyre
with more rubber and less tread void, or a
higher net-to-gross pattern with a more cut-resistant compound.
Another factor to consider is the speed and distance that the vehicle will travel. This will
help determine if you need a more heat-resistant compound to handle longer hauls and higher
speeds.
Quarry operators should also consider the advantages of radial tyres versus bias tyres.
R
a dial tyres, in general, offer wider footprints and better fl
otation, plus greater resistance to
cutting and longer wear due to the more even distribution of pressure. A heavier bias sidewall
can provide more stable load conditions and possibly better sidewall cut protection. However,
it can run hotter than a radial.
Eric Matson is Goodyear’
s manager for global field solutions in the Off-The-R
oad (
OTR
)
.
continuously in reverse for asphalt applications.
The Warrior 2100 screen comes with triple shaft technology to
maximise on efficiency and is especially suited to sticky scalping
applications. With amplitudes and accelerations in excess of 16
mm and 6 g respectively, the Warrior 2100 triple shaft screen
outperforms conventional screens in a multitude of applications
including aggregates, overburden, processed
ores, topsoil, compost, demolition waste,
foundry waste and biomass.
The mid-sized Maxtrak 1150 cone crusher
is offered in two configurations: a direct feed
model and a pre-screen version that enables
customers to handle dirty feed material and
achieve higher production rates. With a
choice of strokes and four liner options that
are all compatible with a single upper frame,
the Maxtrak 1150 cone crusher can be easily
configured for all applications.
The Premiertrak 600 jaw crusher comes
to market in two possible configurations:
diesel-hydraulic and diesel-electric. The diesel-
electric machine can be powered directly from
an on-site source. The unit boasts a 1,200 mm
x 820 mm modern jaw chamber including a
fully hydraulic closed side setting (CSS) range
of 75 mm-200 mm and a reversing system to
clear blockages.
Terex offers the complete crushing and
screening package. Its Terex Washing Systems
unveiled its Aggresand modular aggregate and
sand washing plant at the end of last year.
Aggresand has the ability to wash and
produce multiple aggregates and sands within
one machine, with a throughput of 250 tonnes
per hour.
The first Aggresand machine is now working
Burning rubber
Top tips for tyre selection for quarry equipment
The Sandvik UJ640 is a tracked jaw crusher
that has been purposely designed for the
global aggregates industry and features the
Sandvik CJ615 jaw
