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The Mobile Crane
LTM 1055-3.1 for
military operations
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The standard mobile crane type LTM 1055-3.1
with optional equipment for special requirements
High load capacities, an extraordinary mobility, comprehensive convenience and safety equipment as well as a practice-oriented transport concept for crane accessories and
optional equipment characterize the standard mobile crane
LTM 1055-3.1 from Liebherr, modied for the army.
The 3-axle, 55-tonner, positioned on outriggers or free on
wheels, offers outstanding load capacities. The 32,5 m long,
torsion-resistant telescopic boom lifts loads to 32 m height
under hook at radii of up to 28 m. Supporting basis and
counterweights are variable for a comprehensive application spectrum. High working speeds even permit the quick
handling of loads. The safe load indicator LICCON guarantees fully automatic control of the crane performance in all
operative ranges.
Outstanding
performance
The LTM 1055-3.1 is compact and maneuverable, its operative weight is 36 tons with equal axle load distribution of 12 t
per axle and the control of relocating and setting on outriggers is even possible from the crane cab. The modern LIASDRIVE provides a crane-specic, intelligent travel strategy
for a smooth driving quality at economic fuel consumption.
High mobility and
efficiency
Driver’s cab and crane operator’s cab are modern, ergonomically designed working places. The standard cabs can
be interchanged with armoured versions within a few hours
if required. And instead of the standard tyre equipment, special tyres with emergency running capabilities provide for an
increased mobility.
Comprehensive
equipment for convenience and safety
Containers are provided for the transport of the crane accessories and the optional equipment. All accessories and
the optional equipment, required for everyday operation, are
stowed in containers, loaded on lorries by the crane and are
available for crane operation if required.
Practice-oriented
transport concept
for the optional
equipment
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The Liebherr standard mobile crane LTM 1055-3.1 is designed for high performance. The in-house fabricated and
eld-proven components such as Diesel engine, winch,
slewing gear and slewing ring are especially laid out for the
application on a mobile crane.
High load capacities, quick working cycles and sensitive operating motions permit perfect load handling. The telescopic
boom of inherent stability is extended by the convenient single-ram telescoping system Telematik to the desired boom
length. A multitude of telescoping variants permit optimal
utilization of the telescopic boom’s capacity.
Thanks to the high output of the Diesel engine and the pump
as well as to the regulated load-sensing control, four working
motions can be performed independently of one another.
The LTM 1055-3.1 offers a variable supporting basis and is
leveled automatically. The „key-hole method“ permits convenient control of ballasting the crane from the crane cab.
4,7 t or 7 t partial ballast and 12 t maximum ballast allow variable and economic performance of the crane interventions.
Even at a failure of the Diesel engine or of the hydraulic
pump, the interrupted crane operation can be nalized by
means of the hydraulic emergency set and the crane can be
derigged into driving position.
Extraordinary
performance
Telescopic boom of high-tensile
grain rened steel S 1100
Control elements for the hydraulic
emergency actuation
Loading of a container
Displacement with a container
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Large overhang angle
at the carrier front
Maneuverable with
all-wheel steering
High propulsion forces
on difcult terrain
Compact dimensions, high driving speeds of up 80 km/h and
sensitive maneuvering as well as outstanding off-road mobility characterize the all-terrain mobile crane LTM 1055-3.1.
A modern and robust displacement drive technology in
conjunction with an intelligent crane control warrants maximum mobility for very varied requirements. For the vehicle
drive, the 50-tonner avails of a modern drive management.
Liebherr Diesel engine, ZF transmission, eddy-current brake
as well as the clutch and anti-lock device/automatic track
control are interconnected by an intelligent data bus technology. A very high computer performance ensures a reliable
co-ordination of the functional units and permits smooth
road travel at economic fuel consumption.
The crane and road preserving suspension “Niveaumatik”
guarantees stable cornering during fast driving on the road
and offers excellent off-road capabilities.
High mobility and
efficiency
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The LTM 1055-3.1 provides for comprehensive convenience.
During driving on the road, the spacious, silenced driver’s
cab offers an excellent view. Driver’s and co-driver’s seats
are pneumatically suspended, the steering wheel adjustable,
the rear mirrors heatable and electrically adjustable.
As safety of the crane personnel comes rst during military
interventions, the standard driver’s cab can be interchanged
with an armoured version with integrated emergency roof
exits. Rapid action couplings enable the easy interchange of
the cabs within a few hours. Even with armoured cabs, the
crane travels with a 12 t max. axle load.
In order to increase the mobility of the 55-tonner, the air pressure of all tyres can be reduced from 9 bar to 4 bar when not
in motion. This increases the tyre contact surface by up to
60 % and the driving on soft and less bearing soil is safeguarded. The compressor of the braking system enables the
re-pressurizing of the tyre to 9 bar. Instead of the standard
tyre equipment, it is also possible to t tyres with emergency
running capabilities. In case of a tyre puncture, a fabric-reinforced solid-rubber ring attached to the rim prevents the tyre
from slipping off, so that a distance of 10 kilometres can still
be covered at speeds of up to 25 km/h.
Comprehensive
equipment for convenience and safety
Armoured driver’s cab according to
STANAG 4569, level 1
Comprehensive offer of convenience
for driver and co-driver
Roof exits in the armoured
driver’s cab
Semi-automatic tyre pressure
control device
Tyre ination by the airbox Special tyres with emer-
gency running inset
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Transport of armoured cabs Transport of the hydraulic emergency set Transport of the special tyres with Hutchinson
emergency running system
Accessory container with weatherprotecting tarpaulins
For the various crane operations in the military arena, comprehensive accessories for load handling and an optional
equipment for the protection of the crane personnel on critical territory is available for the LTM 1055-3.1.
The transport of these accessories takes place in special
containers, the dimensions of which are adapted to the
transport vehicles. The 20’ standard container for crane accessories carries the hook block, ballast, spare wheel, spacers, chain suspension tackle in light-gauge and heavy-gauge
version, various hooks and expanding struts as well as the
20’ spreader with automatic positioning device for loads of
up to 30.5 tons. By means of the adapter for the expanding
struts and the heavy-gauge chain tackle, loaded 20’, 30’ and
40’ containers can be handled.
For the transport of a driver’s cab or a crane cab each in
standard of armoured version another 20’ container is available.
Equally, the hydraulic emergency set and 6 special tyres with
Hutchinson emergency running system are transported in
containers of special dimension.
All transport containers are equipped with weather-protecting tarpaulins.
Practice-oriented transport concept
for the optional equipment
Armoured crane operator‘s cab
20‘ standard container
for crane accessories
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Liebherr-Werk Ehingen GmbH
Postfach 1361, D-89582 Ehingen/Do.
+49 7391 502-0, Fax +49 7391 502-33 99
www.liebherr.com, E-Mail: info.lwe@liebherr.com
Subject to modications. P 353.E08.2004
The Liebherr company Grues Mobiles SAS was awarded the
order for the delivery of 50 mobile cranes type LTM 1055/1 AF
from the procurement ofce D.G.A. / S.P.A.R.T. of the French
Ministry of Defence in December 2002. These are standard
cranes of the 55 t load capacity category which are modied
for military purposes with, e.g. armoured driver’s and crane
operator’s cabs. The execution of the order will extend until
2005.
Liebherr delivers 50 mobile cranes LTM 1055-3.1
to the French Ministry of Defence
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