LHM 420 Mobile Harbour Crane

The design of the LHM 420 has been optimised for ships in the Post-Panamax class. The Liebherr mobile harbour crane series raises and lowers loads at up to 120 metres per minute. The LHM 420 has a maximum load capacity of 124 tonnes and handles up to 38 containers per hour with its hybrid drive. The versatile crane is also suitable for the efficient handling of bulk cargoes, as well as the safe transportation of general cargoes.
Lifting capacity (max.) 124 t
Jib length 48 m
Total weight 371 t
Hoisting/lowering max. 120 m/min

Stage V / Tier 5 final engine

Stage V / Tier 5 final engine

The Liebherr mobile harbour crane is equipped with the latest generation of diesel engines for the exhaust emissions standards of EU stage V or EPA Tier 5 final.

Driver's cab

Driver's cab

Noise protection, windshield wiper, air conditioning. The ergonomic and comfortable features of the cab increase the concentration and reduce the fatigue of the crane operator – for consistently high productivity and a high level of safety.

Safety devices

Safety devices

The safety of people, the infrastructure and the environment takes top priority. Our mobile harbour crane has a number of precautionary measures for increased safety in your port.

Four-rope grab control

Four-rope grab control

The synchronisation of the winches is monitored and optimised by the four-rope grab control.

Hydrostatic drive

Hydrostatic drive

Closed hydraulic loops are used for all main functions such as lifting, turning and luffing. The crane operator benefits from extremely precise control, the service personnel benefit from a minimum number of components and the operating company benefits from reduced fuel consumption.

Pull cylinder

Pull cylinder

The pull cylinder over the boom offers many advantages: no collision with swinging load, no buckling of the cylinder and full protection of the piston rod in park position.

Undercarriage

Undercarriage

The individual wheel sets of the LHM undercarriage enable movement in all directions and thus 360-degree mobility.

X-shaped support base

X-shaped support base

The star-shaped supporting base reduces the torsion strain on the steel structure, enhances the service life of the slewing ring and guarantees optimal vertical stability during operation.

Supporting pads

Supporting pads

The standard version of the crane has four supporting pads (5.5 metre x 1.8 metre).

3-point support

3-point support

The hydraulic combination of the wheel sets in three groups prevents overloading of the individual wheel sets and the ground. The grouping also ensures maximum stability when manoeuvring the crane.

Individual wheel sets

Individual wheel sets

All wheel sets are steerable and have load balancing. Ground pressures of six tonnes for each wheel are not exceeded. Accessibility from all sides guarantees easy maintenance.

4-chord boom

4-chord boom

The four struts (lattice design) of the boom provide maximum stability and handle the sideways pull better than alternative boom designs. This results in a longer service life.

Lighting

Lighting

Operation without a loss of productivity is also possible when it is dark. High-performance LED headlights at the boom and tower provide optimal lighting.

Slewing mechanism

Slewing mechanism

The LHM 550 has three slewing mechanisms connected in parallel. The loads for the slewing ring are reduced to a minimum.

Enclosed tower design

Enclosed tower design

The enclosed design of the tower gives the crane operator secure and weather-protected access to the tower cab.

Glass fibre reinforced plastic

Glass fibre reinforced plastic

The machine housing panels are made from glass fibre reinforced plastic. The advantages include low weight and resistance to rust.

Tail swing radius

Tail swing radius

The tail swing is within the support base for all crane types in the LHM series. The risk of collision with passing machines is thus avoided. The crane operator can concentrate solely on his work.

Horizontal load path

Horizontal load path

During luffing the load always moves along the horizontal load path.

Cooling

Cooling

The speed of the special Howden coolers is automatically adapted to cooling requirements. As a result, diesel consumption and noise levels are reduced to a minimum and the service life is maximised.

Paintwork

Paintwork

To defy the rough maritime environmental conditions, the standard paintwork comprises a primer coat, an intermediate coat and a top coat.

Litronic crane control

Litronic crane control

The control system of the mobile harbour crane range, which was developed by Liebherr, focuses on precision, safety and productivity. Obtain a detailed overview here.

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Machine housing concept

Machine housing concept

The single-storey slewing platform houses the drive unit, slewing mechanisms and hoist mechanisms, the control cabinet room and the alternator. All components are easily accessible for maintenance work.

Control cabinet room

Control cabinet room

All electric and electronic components used satisfy military standards. External environmental conditions have no impact on the functionality. The entire system was developed for the maritime environment with temperatures from -40°C to +80°C.

Slack rope protection

Slack rope protection

A slack rope protection device is mounted on the winch frame. The winding on the winch is effected evenly, and the hoist rope is always kept taut.

Service network

Service network

Like all maritime cranes from Liebherr, our mobile harbour crane can rely on a dense service network worldwide. This ensures short downtimes and a quick response.

Tower cab position

Tower cab position

Optimal views for the operator. The forward-mounting position of the tower cab with 70% glass (safety glass) offers the driver a comprehensive visibility range.

Accessibility

Accessibility

Regular servicing maintains the efficiency of the crane. So maintenance work can be carried out quickly, the accessibility of the relevant components is to the fore. This reduces downtimes.

Lifting capacity (max.) 124 t
Max. load bulk 90 t
Radius min. 10.00 m
Jib length 48 m
Total weight 371 t
Container rows max. 16
Max. ship width bulk 55 m
Max. ship width scrap 43 m
Material handling capacity bulk 1,500 t/h
Engine power 750 kW
Hoisting/lowering max. 120 m/min
Slewing max. 1.60 rpm
Luffing max. 85 m/min
Travel speed max. 5.00 km/h
Mobility rubber tyred
Fields of application Bulk handling / Container handling / General cargo operation / Heavy lift / Scrap handling
Lifting height max. 44 m
Hybrid drive

Hybrid drive

Pactronic enables greater handling capacity with low fuel consumption thanks to an innovative energy-saving system. more

Intelligent grabber

Intelligent grabber

The innovative system detects the properties of the material and fills the grabber optimally for each work cycle. more

Pendulum-free load

Pendulum-free load

Cycoptronic anticipates the path of the load and balances out any pendulum movements even before they develop. more

Soft Touch Down

Soft Touch Down

The system detects how much space is available between the container and destination and optimises the braking distance.

Synchronised lifting

Synchronised lifting

One system, two cranes and only one crane operator: Sycratronic brings several cranes together as one functioning unit. more

Vertical Line Finder

Vertical Line Finder

The avoidance of sideways pull and precise vertical lifting of the load increase the service life of the crane.

Radio remote control

Radio remote control

The radio remote control combines user-friendliness and functionality. All crane movements are easy to control, also from outside the cab.

Central lubrication

Central lubrication

The central lubrication system requires less maintenance. Relevant crane parts are automatically and independently lubricated by electric pumps.

Automatic support

Automatic support

A convenient addition for enhanced safety during operation is the automatic support. The system ensures balanced pressure distribution of all supporting pads on the ground.

Electric drive

Electric drive

The entire range of LHM models can be equipped with an electric main drive – for more environmental friendliness. A high-voltage or low-voltage connection is required for this drive.

Economy software

Economy software

Whether idling or under full load, EcoMode reduces the engine speed to the required minimum. This reduces emissions, material wear and operating costs.

Individual wheel sets

Individual wheel sets

Ground pressures of six tonnes for each wheel are not exceeded in the standard configuration. Additional wheel sets can also be mounted to further reduce the ground pressure.

Flexible supporting pad system

Flexible supporting pad system

In order to take into account the different designs of quays and to evenly distribute the load, the shape and size of the supporting pads can be varied.

Noise protection

Noise protection

There is a special protection package for use in areas with strict noise level requirements. With the reinforced soundproofing of the machine room, further noise reduction of up to 50 percent is achieved.

Fleet management

Fleet management

LiDAT supplies information about localisation, as well as detailed data about operation of the machines.

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Teach-in

Teach-in

Fixed loading and unloading points ensure greater precision and speed in bulk goods handling.

Low-temperature equipment

Low-temperature equipment

Special equipment packages enable reliable handling in icy regions. Also under extreme conditions with temperatures below -50° Celsius.

Other special equipment

Other special equipment

Do you need special equipment? Simply contact us! Liebherr mobile harbour cranes are used worldwide and have many other options.

Cyclone filter system for drive

Cyclone filter system for drive

Our cyclone filters achieve a filtration efficiency of up to 99.9 percent. For extra protection against dust.

LHM 420 container handling

Call up video

Used machines

Liebherr has a large pool of used equipment. Overhauls, transport and assembly are also part of our service. To used machine pool

Areas of application

Our maritime cranes are all-rounders. Gain an overview of the versatile deployment possibilities. Applications in the harbour

Maritime technology

Groundbreaking technologies from Liebherr. From hybrid drive to automation and self-learning systems. Maritime technology

Contact

Find the right contact person at Liebherr for your matters, your region and your maritime cranes. Sales and service partner