Max. load capacity: 220 t
Max. height under hook: 101 m
Max. radius: 88 m
LTM 1220-5.2
Page 2
15323
Compact, maneuverable and
weight-optimized
40000
20°
16.00 R 25 12 t12 t 12 t12 t 12 t
2219
R = 12070
R
R
= 11010
= 9560
13298
15517
8899
5104
= 5450
R
R
=4850
600
3795
17°
3000
5500
• Overall length 15.52 m, carrier length 13.3 m
• Large overhang angles of up to 20°
• Smallest turning radius of 11.01 m with all-wheel steering
• Rear counterweight radius only 4.85 m
• 60 t total weight (axle load 5 x 12 t)
• Choice of 3 tyre sizes
14.00 R 25 carrier width 3 m
16.00 R 25 carrier width 3 m
20.5 R 25 carrier width 3.1 m
8300
Modern drive concept
• Powerful, 6-cylinder Liebherr turbo-charged diesel engine
type D846 A7, 370 kW/503 hp, exhaust gas emissions
correspond to the directives 97/68/EC Stage 3 and
EPA/CARB Tier 3, robust and reliable, modern and
electronically-controlled engine management
• ZF power shift gear with automated AS-TRONIC control
system. ZF intarder fitted directly to the gear unit, 12 forward
and 2 reverse gears, automated control, reduced fuel
consumption due to a high number of gears
• 2-stage, robust transfer case with lockable transfer differential,
creeping speed 0.78 km/h
• Drive 10 x 6, axles 2, 4 and 5 driven
• Drive 10 x 8 (optional), axles 2, 4 and 5 driven, axle 1 can
be activated for off-road displacement
• Weight-optimized, robust, low-maintenance axles, perfect
track keeping and lateral stability due to special arrangement
of the steering knuckles; maintenance-free axle struts, steel
and rubber mounted
• Maintenance-free drive shafts; quick and easy fitting due to
70° diagonal toothing
• Hydropneumatic ”Niveaumatik” suspension, programcontrolled for ”setting crane on outriggers”, ”crane
displacement with equipment” and "crane displacement on
the road", suspension travel +150/-150 mm
• Lateral force released and maintenance-free suspension
rams, piston rods protected against damage
by synthetic pipes
• Sustained-action brakes:
Engine brake as exhaust retarder with Liebherr additional
brake system (ZBS), intarder on gear, optional Telma-type
eddy current brake
• Service brake:
All axles fitted with air disc brakes, high braking performance,
long maintenance intervals, rapid-change brake linings
LTM 1220-5.2LTM 1220-5.2
Page 3
Variable steering
concept with
„active rear-axle steering“
Axles 3, 4 and 5 set up as „active rear-axle steering, 5 steering
methods are preselectable by fixed programs (P):
P1: On-road steering
Axles 1 and 2 are steered mechanically with hydraulic assistance
by the steering wheel. Axles 3, 4 and 5 are steered „actively“
speed-dependent, subject to the cramp of the front axles,
and over 30 km/h, axles 3 and 4 are set to straight displacement
and fixed, from 60 km/h, axle 5 is fixed equally to straight
displacement. The change of the steering angle in accordance
with the speed, results in a precise and stable driving quality
during higher speeds, tyre abrasion is reduced and the
maneuverability clearly improved.
P2: All-wheel steering
Axles 3, 4 and 5, dependent on the steering angle of axle 1
are cramped by means of the steering wheel so that the
smallest turning radii can be performed.
P3: Crab steering
Axles 3, 4 and 5 are cramped into the same direction as axles
1 and 2 by means of the steering wheel.
P4: Steering without swerving
Axles 3, 4 and 5 are cramped in accordance with axle 1 so
that no swerve out of the rear of the carrier takes place.
P5: Independent rear-axle steering
Axles 1 and 2 are cramped by the steering wheel, axles 3, 4
and 5 steered independent of the cramp of axles 1 and 2 by
momentary-contact buttons, whereby the cramp of axle 3 is
adapted to the required situation.
• A failure in the rear-axle steering makes it ineffective and
the rear axles are set to straight displacement by the centering
rams
• Two independent hydraulic circuits with wheel- and enginedriven hydraulic pump, thus maximum safety standard
• Two independent control processors (by existing E/A modules)
and diversified sensoriel system
• Entire know-how of the „active rear-axle steering“ by Liebherr
310
Page 4
Setting crane on outriggers –
quick, convenient and safe
700
• Variable support basis
outriggers retracted
Support basis 5.5 m x 8.9 m
Support basis 8.3 m x 8.9 m
• Fix-mounted supporting pads with splash guard
• Supporting ram travel of up to 700 mm
• Level control of the outriggers, all-automatic push-button
crane levelling during the supporting procedure
• 2 x 9° lateral inclination of crane and crane superstructure
• Control panels at either side of the carrier with membrane
keyboard and electronic inclination indicator, push-buttons
for ENGINE/START/STOP and speed control are illuminated
and lockable
• Operation of the outrigger system in accordance with
accident-prevention legislation
• Illumination of the supporting area by 4 incorporated
projectors
Comfortable driver’s cab
of high functionality
• Modern, comfortable driver’s cab of high functionality and
convincing design, corrosion-resistant, sheet steel version,
cataphoretic dip-primed, front mounted on rubber shock
absorbers, rear cushioned hydraulically, internal sound and
heat absorbing panelling
• Safety glass all-round, greenish tinted front and side windows
for heat absorption, electric window lifters
• Arrangement of the control elements and displays according
to ergonomical aspects for safe and convenient handling
during continuous operation
• Digital display and keyboard units interconnected with the
functional blocks by data bus technology
• Driver’s seat cushioned pneumatically, with pneumatic lumber
support, headrest
• Steering wheel adjustable in height and inclination
• Heatable and electrically adjustable rear mirrors
• Safety belts for driver and co-driver
• 3 windscreen wipers with automatic wipe/wash system and
intermittent control
• Delayed switch-off of the interior lights
• Various racks and stackers
• Radio preparation
LTM 1220-5.2LTM 1220-5.2
Page 5
Comfortable crane cab
of high functionality
• Crane cab in corrosion-resistant galvanized sheet steel
version, powder-coated, with sound and heat absorbing
internal panelling, interior of modern design, tinted windows
all-round, front knock-out window with large windscreen
wiper and wipe/wash device, skylight of bullet-proof glass
with large screen wiper and wipe/wash device, roller blind
on front window and skylight, space-saving sliding door
• Greenish tinted front and side windows for heat absorption
• Pneumatically lateral extendable footboard for safe access
to and from the carrier
• Crane cab tiltable to the rear by 20° to improve the sight
• 1 working projector of 70 Watt, at the front of the cab
• Spring-mounted and hydraulically cushioned crane operator’s
seat with pneumatic lumbar support and headrest
• Operator-friendly armrest-integrated controls, vertically and
horizontally adjustable master switch consoles and armrests,
ergonomically adjustable operating consoles
• Ergonomic control levers with integrated winch rotation and
slewing gear signalling device
• Modern instrument supporting base with incorporated
LICCON monitor, display of all essential operating data on
the LICCON screen
• Radio preparation
58
Page 6
Crane drive with
field-proven components
• Crane engine: 4-cylinder Liebherr turbo-charged diesel
engine type D934L A6 with 180 kW/245 hp, exhaust gas
emissions in accordance with the directives 97/68/EC Stage
3 and EPA/CARB Tier 3, robust and reliable, located opposite
the crane cab, thus lower noise emissions, electronic engine
management, optimized fuel consumption, stainless steel
exhaust gas system
• Hydraulic system with 5 axial-piston variable displacement
pumps with servo control and capacity regulation,
electronically-controlled oil cooler as standard
• Highly-efficient noise abatement of the diesel-hydraulic crane
drive as standard
Liebherr winch technology
• Liebherr-built winches (hoist gear 1 and 2) with special
grooving, with integrated planetary gears and spring-mounted
multi-disc brakes as static brakes
• Liebherr-built axial-piston constant-output engine, specially
designed for crane operation, exposed successfully to tough
fatigue tests
• Display of the winch rotation on the LICCON screen
• Non-rotating hoist rope
R = 4850
10 t
10 t
3600
5630
Ballasting –
in a matter of minutes
• Counterweight variants 12 t, 22 t, 34 t, 44 t, 54 t and 74 t
• Control of ballasting from the crane cab
• Quick ballasting by “key-hole” method
• Ballasting cylinder permanently mounted to superstructure
• Compact counterweight dimensions, e.g. 54-t counterweight
of only 3.6-m width
12 t
10 t
10 t
10 t
12 t
54 t
LTM 1220-5.2LTM 1220-5.2
Page 7
Lifting of loads precise and safe
• 6-section, 60-m-long telescopic boom with rounded, oviform
bottom shell for high lateral stability
• Optimal utilisation of the telescopic boom due to a multitude
of telescoping variants
• 12.2-m – 22-m-long biparted swing-away jib extendable to
29 m and 36 m
• Swing-away jib mountable at 0°, 22.5° and 45°, hydraulic
fitting aid, hydraulic ram for continuous variation of the
swing-away jib from 0° – 45° (optional)
• Telescopic boom extension 7 m, resulting in a 7-m higher
attachment point for the swing-away jib
• Quick and easy re-reeving of the hoist rope by rope dead
end connection
• Load hook with rope dead end connection, cylindrical load
hook shape for easy displacement by rolling on the ground
110 m
100 m
90 m
80 m
70 m
K 36 m
K 29 m
22,5°
45°
7 m
60 m
60 m
50 m
40 m
30 m
20 m
10 m
56 m
52 m
47.7 m
43.4 m
39.1 m
34.8 m
30.5 m
26.2 m
21.9 m
17.6 m
13.3 m
oviform boom profile
76
Page 8
Outstanding
boom technology
The advantages of the
boom technology at a glance
The focal points of the successful boom technology for the
Liebherr mobile cranes are the oviform boom profile, the
internal interlocking system of the telescopes and the
telescoping system „Telematik“.
The oviform boom profile
It features a particular inherent stability against deflection and
torsion. In steep boom position as well as at large radii, the
oval boom profile offers optimal lifting capacities.
The patented internal interlocking system of
the telescopes
The interlocking process of the telescoping ram with a boom
section is performed successively by spring-loaded pins, and
followed by the mechanical release of the same section of the
telescopic boom. This method guarantees that a telescope
release can only take place if the telescopic section is
interlocked with the hydraulic ram.
The automatic telescoping system „Telematik“
An outstanding flexibility in controlling the various telescoping
lengths of the boom is achieved by the rapid-cycle telescoping
system. The most suitable boom configuration can be
preselected dependent on the job requirements. The
telescoping of the boom is practicable either by manual or
fully automatic control. The saving of time during the automatic
telescoping procedure and the combinatorial variety of the
telescoping paths determine the functionality of the telescopic
booms.
• Considerable increase in lifting height and reach due to
extraordinarily long telescopic booms
• Telescopic booms of inherent and lateral stability for maximum
lifting capacity requirements
• Outstanding functionality due to the automatic telescoping
system „Telematik“
• High working speeds due to the fully automatic telescoping
procedure
• Outstandingly easy operation - control of the telescoping
procedure by means of telescoping images on the LICCON
display screen
• Maintenance-free telescoping system
LTM 1220-5.2LTM 1220-5.2
Page 9
Data bus technique
revolutionises the
crane electric system
The Liebherr mobile cranes are entirely equipped with data
bus transfer systems. The digital system is the basis for the
data bus. It permits the transfer of a multitude of information
almost parallel and faultless via one only cable. Liebherr has
developed its own system bus (LSB) which corresponds to
the manifold requirements in respect to all possible mobile
crane operations. All important electrical and electronical
components on the superstructure, such as length sensors,
angle sensors, load cells, proximity switches, master switches
and hoist limit switch are equipped with their own
microprocessors and communicate via various data bus
networks. The keyboard and display units, the outrigger control
as well as the engine and transmission control on the vehicle
are intelligent function blocks and equipped with bus interfaces.
A continuous self-test of the sensors during operation
guarantees a high functional reliability. The internetworking of
the LICCON computer system with the system bus establishes
entirely new and comprehensive diagnostic facilities in respect
to the crane.
The advantages of the
data bus technique at a glance
• Reduction of the operating costs due to a modern engine
and transmission management (CAN bus system); increased
economy due to improved endurance of the individual units
• Improved reliability due to a considerably reduced number
of electrical cables and contacts
• A continuous self-test of the „intelligent sensors“ guarantees
a maximum of reliability
• Self-manufactured bus systems, specially adapted to the
requirements of a mobile crane
• The data bus technique increases the comfort and safety
during driving and crane operation
94
Page 10
LICCON configuration and
operation program
• Standard application programs: Safe load indicator (LMB),
configuration program with configuration picture, operation
program with operating picture, telescoping program with
telescoping picture, test parameter program, test system;
supporting force indication and work area limitation as an
optional feature
• Setting of the configuration program by convenient
interactive functions
• Safe and reliable acknowledgement of the configuration set
• Representation of all essential data by graphic symbols on
the operation picture
• With integrated wind force test (optional)
• Reliable cut-off device when exceeding the admissible
load moments
• Load capacity values for any boom intermediate length
• Winch indications for precise lifting/lowering of the load
LICCON-assisted
telescoping system
• Telescoping by single-stage hydraulic ram with hydraulic
driving tenons (patented internal interlocking system)
• Telescoping procedure controllable by convenient operator’s
guide on the monitor, precise approach of the interlocking
positions
• Telescopable loads are displayed on the LICCON
operating picture
• Rapid-cycle telescoping system with „automatic mode“, i.e.
all-automatic telescoping to the required boom length
• Very compact and light-weight telescoping system, thus
increased load capacities, especially with long booms and
large radii
• Automatic cushioning in end positions during telescoping
and retracting for the preservation of the structural members
LTM 1220-5.2LTM 1220-5.2
Page 11
The LICCON test system
• The test system assists the servicing personnel in quickly
localizing failures of the crane sensory system without the
need of measuring instruments
• The service starts on the display screen, troubleshooting
becomes a matter of seconds
• Occurring errors are indicated by error codes and error
descriptions on the display screen
• Convenient interactive functions permit the observation of
all inputs and outputs of the entire system by different
representations on the display screen even during crane
operation. It equally visualizes the allocation of the individual
sensors and actuators of the system and their functions.
The LICCON work area
limitation system
• It relieves the crane operator, especially in situations where
the handling of loads requires his full attention, by controlling
the work area limits. Work areas can be restricted by buildings,
bridges, roofs, high-tension power lines, pipelines or adjacent
cranes. The automatic work area limitation system (optional),
can easily be programmed. Four different limitation functions
are practicable:
• Height limitation of the pulley head
• Radius limitation
• Slewing angle limitation
• Limitation of edges
The LICCON work planner
• The LICCON work planner consists of a software program
on CD for planning, simulation and documentation of crane
applications on the display screen (optional)
• The 2D planner program enables the drawing of buildings,
to write texts and to represent a crane model true to scale
including the entire motions within a fictional construction
site
• The work planner permits the preparation of more transparent
offers, facilitates the briefing of crane operators and can be
run on a Laptop at the construction site
112
Page 12
Electronic SPS crane control with test system
• Control of the winches, slewing gear and the luffing and
telescoping motions by the LICCON computer system (PLC
control)
• Four working motions can be performed independently of one
another
• Speeds for lifting/lowering, luffing and slewing are pre-selectable
in 5 steps
• Very short response rates at the activation of crane motions
Single-stage
telescoping ram
LICCON
monitor
Joystick
selectors
Engine control
with hydraulic
interlocking
device
• Hoist gear and slewing gear operate within a "closed oil
circuit". This enables very sensitive lifting/lowering of loads,
or slewing. Moreover, during lowering of the load, the potential
energy generated is not converted into heat but can be reemployed for a second motion. This saves fuel and the oil
does not reach as high a temperature as during operation
within an open circuit.
• Functional test of all essential components by means of the
LICCON test system
Luffing ram
Control block
Liebherr
hoist winch I
Transmitters
Sensors
slewing gear
Liebherr
LICCON
control
Liebherr
slewing gear
1 double variable
displacement
pump
3 variable
displacement
pumps
Optional features contribute to an expension of the
application spectrum and increase comfort and safety
On the carrier
• Additional heater with engine preheating
• Eddy-current brake
• Supporting force indicator on the carrier and in the
operator’s cab
• Rope box
• Air-conditioning system
• Trailer coupling D12/D19
• Radio preparation
• Seat heating for driver’s and co-driver’s seat
• CD radio set
On the crane superstructure
• Additional heater with engine preheating
• 2nd hoist gear
• Air-conditioning system
• Seat heating
• Work area limitation
• Aircraft warning light
• XENON working projector on base section, electrically
adjustable