33
april 2014
international
construction
EARTHMOVING
Reducing the burn
lbs (22.5 tonnes) depending on the
version.The largerD155AX-8 is an
89,300 lbs (40.5 tonne)machine.
The D65-18 is driven by a
217 hp (160 kW) Komatsu
engine, while the D155AX-8
is powered by a 354 hp (260
kW) engine, bothof which feature
selective catalytic reduction (SCR)
andexhaustgas recirculation (EGR)
systems – technology that works to
lower diesel exhaust pollution.
Komtrax remotemonitoring technology
also comes as standard on both dozers,
together with a newAuto Idle Shutdown
function and automatic shift transmission
– a feature that is said to reduce fuel
consumptionby up to -10%.
Liebherr has also introduced a new
Generation 6 PR 736 dozer, anotherTier
4 Final-compliant earthmover this time
in the 20 to 25 tonne operating weight
category. Here as well, a number of new
features have been integrated toboost fuel
efficiency on top of the new engine and
hydrostatic transmission.
For instance, the model features an
electronically-regulated travel drive with
an integral eco-function.This means that
when the operator chooses between high-
performance andmaximum economy, the
system automatically selects the optimal
setting for economical operation of all
travel-drive components.
Case’s latestM-series dozers are alsonow
going into full production – a five-model
range comprising the 22 tonne class
2050M, 18 tonne class 1650M, 15 tonne class 1150M, 10 tonne
class 850M and9 tonne class 750M,with enginepowers from92
hp (69kW) to214hp (160kW).
Themachines featureTier 4 Final engines, using SCR to limit
exhaust emissions.The company also said therewere fuel savings
of up to14% tobe had, compared to the previousmodels.
Loaders
JCB,meanwhile, has been keen to highlight its diesel particulate
filter (DPF)-free earthmoving machines – a trend that it began
during the Tier 4 Interim phase of emissions legislation. DPFs
collect particulate matter from exhaust fumes and burn it off
periodically, and can present extra cost and service implications
for the end-user.
ConExpo saw JCB continue take the wraps off new wheeled
loaders in the form of the 3.5m
3
bucket capacity JCB 457.This
machine relies on a193kWMTU engineusingSCR tomeet the
Tier 4Final regulations, withnoDPF.
JCB says the 457 boasts a 16% fuel saving compared to the
previousmodel.Andaswithmanyof theother latestearthmovers,
remote monitoring technology comes as standard – JCB’s
LiveLink telematics system is fitted.
Meanwhile, anewH-Series ofwheeled loaders has been
launched by Volvo – also Tier 4 Final-compliant,
and also boasting hefty fuel
consumption
improvements.
This L250H, which can carry
bucketswith capacities of between
2.7 m
3
and 9.5 m
3
, was on show
at Conexpo. It is equipped with
Volvo’s Optishift driveline and
the manufacturer claims a -18%
reduction in fuel consumption
compared topreviousmodels.
Another Tier 4 Final wheeled loader
was also introduced by Case in the form of the 3.6 m
3
bucket
Liebherr has introduced a new Generation 6 PR
736 dozer, a Tier 4 Final-compliant earthmover
in the 20 to 25 tonne operatingweight category.
New Tier 4 Final compliant excavators
from Volvo come in the form of the
E-Series, with the 36 to 43 tonne class
EC380E on display at ConExpo.
Komatsu’s new 28 tonne payload HM300 ADT –
a Tier 4 Final machine boasting a 242 kW
Komatsu engine equippedwith EGT and SCR
aftertreatment.
