Manual

32
New LH 80 M Litronic Material Handler Features
Prize-Winning Energy Recovery Cylinder (ERC)
R 950 SME: New Heavy Duty Crawler Excavator
The LH 80 M Litronic is the first materi-
al handler of a new generation of mobile
machines designed specifically for ma-
terial handling. It is powered by a 313-hp
(230-kW) Liebherr 6-cylinder in-line engi-
ne, which is also a new development and
complies with Stage IIIB / Tier 4i exhaust
emission limits.
The energy recovery cylinder (ERC) is a
prize-winning innovation which boosts
the performance of the LH 80 M Litronic
even further. Installed as standard equip-
ment on the LH model series, this pa-
tented Liebherr development takes the
form of a third hoist cylinder. It is moun-
ted between the two hoist cylinders and
Liebherr presented the new R 950 SME
crawler excavator for the first time at
the 2012 Intermat trade show in Paris
(France). This newly developed heavy
duty machine complies with Stage IIIB /
Tier 4i exhaust emission standards and
was specifically designed to increase
productivity in tough stone-quarrying
applications.
The ‘SME’ acronym stands for ‘Super
Mass Excavation’, the machine is for in-
stance equipped with a reinforced un-
dercarriage featuring crawler-track
components from the larger R 956.
In conjunction with a heavier counter-
weight, this construction ensures higher
stability, allowing the use of a larger bu-
cket. The equipment of the R 950 SME
was optimized for higher tear-out and
breakout forces.
Compared with the standard version, the
R 950 SME has a higher engine output.
Its new 6-cylinder common-rail diesel en-
gine produced at the Liebherr Compe-
tence Centre for Diesel Engines in Bulle
(Switzerland) delivers 300 hp (220 kW)
filled with nitrogen gas. By compressing
the nitrogen, the ERC system stores the
energy released as the working equip-
ment is lowered. During the next lifting
movement, the nitrogen expands and
the stored energy is added to the power
exerted by the hoist cylinders. Since the
energy recovery cylinder contributes up
to 80 kW of additional energy, less pow-
er is needed from the diesel engine. This
innovative device makes machine opera-
ting cycles smoother, more powerful and
above all faster. Consequently, the ma-
chine performs even more economically.
from a displacement of 10.5 liters. It com-
plies with Stage IIIB/Tier 4i exhaust emis-
sion standards, for which purpose its
specification includes an external exhaust
gas recirculation system and a diesel par-
ticulate filter with active regeneration.
The higher dynamic performance of the
R 950 SME is not only derived from the
engine power and the new hydraulic sys-
tem. Travel speed is 20 % higher and,
coupled with a 7 % increase in drawbar
pull, it makes the new excavator distinct-
ly more manoeuvrable across rough ter-
rain. Working cycles are improved by a
7 % increase to 211 kN in tear-out force,
and a 9 % increase to 255 kN in break-
out force.
Liebherr Group News