international
construction
april 2014
EARTHMOVING
36
Reducing the burn
technologies, themachine is said to be +10%more fuel efficient
than the previousmodel.
Caterpillar is also claiming sizeable fuel consumption savings
with its new Tier 4 Final excavators – it claims to have seen
savings of up to 13%with the large 92 tonne class 390F and 75
tonne class 374Fmodels over themachines they replace.
Further down the weight categories is Caterpillar’s 335F L
compact radius excavator – a new 39 tonne class Tier 4 Final
model that the manufacturer says delivers a 16% improvement
over themodel it replaces.
AndnewTier 4Final compliant excavators fromVolvo come in
the form of the E-Series, with the 36 to 43 tonne class EC380E
on display at ConExpo. The manufacturer said this machine
delivered high digging and breakout forces alongside reduced
emissions and a +9% improvement in fuel efficiency.
Trucks andgraders
Meanwhile, anumberofTier4Final-compliant articulateddump
trucks (ADTs) have also been introduced to coincide with this
year’s emissions laws in North America and Europe, many of
which were discussed in the haulers feature in the March 2014
issue of
iC
.
But Komatsu waited until the ConExpo to launch its latest
design. The manufacturer showcased the 28 tonne payload
HM300 ADT, a Tier 4 Final machine boasting a 242 kW
Komatsu engine equippedwithEGR andSCR aftertreatment.
Aswell as thenew engine, theHM300 is equippedwith a range
of other technology. These include the K-ATOMiCS electronic
transmission modulation system, Komtrax remote monitoring
technology, a new auto idle shutdown function and Komatsu’s
TractionControl System.
Operators can also select between economy and power modes
for different jobs, while a new operator identification system
reports key information frommultiple operators.
And as far as graders are concerned, Caterpillar hasTier 4Final
launches in thisproduct group aswell – theMSeries3, consisting
of the19 and20 tonne class 12M3, 140M3, 160M3models, and
their all-wheel-drive (AWD) counterparts.
The manufacturer claims average fuel
savingsofup to+10%using themachines’
Economy Mode, which reduces speed
to allow the graders to work in a more
efficient range. Caterpillar’s Product Link
and Vision Link telematics technology
also come as standard, while options like
Cat Grade Control Cross Slope and Cat
AccuGrade help operators work more
efficiently, productively and accurately.
John Deere has also updated its
12-modelG-Series graderswithnew John
Deere PowerTech engines to ensure that
Caterpillar launched its new 620 K-Series scrapers consisting
of the 25 and 26 tonne capacity 621K, 623K, and 627Kmodels
(pictured), which replace their H-Series predecessors.
Doosan showcased new Tier 4 Final-
compliant earthmovers at ConExpo-
Con/AGG exhibition, including the
DX490LC-5 excavator (pictured), DL420-
5wheeled loader and DA40-4 ADT.
Liugong has
introduced a 48
tonne class, Tier
3-compliant 950E
excavator, part of
its new E-series
generation. The
machine features
its Intelligent
Power Control
System to provide
more accurate
matching and
control over
engine speed and
main pump flow.
A 38 tonne class NewHolland E385C excavator is boosting earthmoving production
for German contractor Roth& Söhne. Themachine is equippedwith a Trimble
positioning system that offers precise 3D steering using GPS.
