69
november 2014
international
construction
EQUIPMENT
Liebherr
L
iebherr’s plant inTelfs,
Austriamanufactures the
group’s range of dozers,
crawler loaders and telescopic
handlers.Development work at
the factory has continued a pace
this year, withnew additions to
Liebherr’sGeneration 6dozers now
rolling out, alongwith brandnew
telescopic handlers, whichwill add
significantly to the range Liebherr
offers.
As far as the dozers are concerned,
Liebherr has now released Stage
IV/Tier 4Final-compliant versions
of the two largestmachines in its
Generation 6 range. At around
30 tonnes weight andwith a 185
kW engine, the PR 746Litronic
equates to aCaterpillarD7dozer,
while the 40 tonne class, 250 kW
PR 756Litronic competes with the
D8.They join the PR 736Litronic,
whichwas the firstGeneration 6
machine to be released inApril.
As withmany other Liebherr
machines, the company uses
hydrostatic drives for its dozers. It
Liebherr’s plant in
Telfs, Austria is busy
renewing its offering,
withmoreStage IV-
compliant dozers and
an expanded range of
telescopic handlers.
ChrisSleight
reports.
operator comfort.There is a touch
screen control in the cab to access
all themajor functions and the
newmachines alsohave anupdated
ECO functions, whichparticularly
helps fuel efficiency inmedium and
light work.
Liebherr’s LiDAT telematics
system is standard.TheGeneration
6machines can also be factory-
fittedwith kits to accept themajor
brands ofmachine control system
available on themarket.
Telehandler expansion
Liebherr entered the telehandler
segment in 2007with fourmodels
offering vertical reaches of 10m to
13m. It is now planning a large,
phased expansion of themachines
it offers, asmanaging director
of Liebherr-WerkTelfs,Martin
Längle explained.
“Based on the experience in the
industrial segment and after a
thorough analysis of bothmarkets,
Liebherr decided to enter the high
volume 7m class.Our engineers
New
dozers
and handlers
says the use of this technology over
a traditional transmission and axles
has a number of advantages.
Acceleration to top speed is
smooth and continuous, withno
gear changes.Mounting amotor
on each tracknot onlymeans high
ground clearance, as there is no
axle, and also allows the tracks to
counter-rotate, so the dozers can
more or less turn on the spot.
Liebherr also says the hydrostatic
drive helps with fuel economy, as
the engine is kept at constant revs
at itsmost efficient point, with
other on-board systemsmanaging
travel and other functions.The
hydrostatic system also acts as a
brakewhen required, and canhold
the dozer still on steep inclines.
Liebherr hasmet the
requirements of Stage IVwith the
use of selective catalytic reduction
(SCR) as after treatment on its
6-cylinder engines, which are used
on both the PR 746 andPR 756.
Themachines’ cabs and controls
have been redesigned for greater
The new PR 756 being
put through its paces.
