Variable boom systems

Folding jib

Quickly ready for use and particularly low cost

The folding jib significantly increases the working range of mobile cranes. On many crane models, the double folding jib can be carried on the crane with a 12-tonne axle load. Eliminating additional transport and extremely short set-up times make these mobile cranes particularly economical to run.

Functional additional equipment for the folding jib

Additional bespoke systems and components are available for every crane model to improve its flexibility even further.

  • Folding jib extension
  • Telescopic boom extension
  • Various working angles for the jib
  • Hydraulic adjustment under full load, lifting capacity interpolation
  • Special folding jibs
    • Different lengths
    • Integral erection jib
    • Hydraulically adjustable
  • Rooster sheave

5.5 m erection jib,
hydraulically adjustable

Hydraulically adjustable folding jib
(0° to 40°)

Runner can be folded to the side

Erection jib, consisting of the folding jib
adapter and an additional roller set
or a hook traverse

Hydraulic assistance to mount
the folding jib with BTT

Hose drum for hydraulic adjustment
of the folding jib

Fixed jib

Increased hoist height and radius

The telescopic boom of our large mobile cranes can be extended using a fixed lattice jib. That enables to deliver great hoist heights and load capacities. The fixed jib is particularly helpful when working with projecting edges, such as on high buildings. It can be fitted at various working angles.

Luffing jib

Enormous working range with
lattice luffing jib

Our large cranes can cover a massive working range with a lattice luffing jib. That is ensured by infinite lifting capacity interpolation when luffing the boom combination. The luffing jib is used in particular for hoisting work which requires a large radius.

Automated raising of the luffing jib

A user-friendly automatic system allows the lattice luffing jib to be raised easily. The straightforward handling takes the strain off the crane operator and enhances safety. The crane operator only has to luff the telescopic boom. The adjustment winch is operated by the crane controller.

High load capacities with Y guying

Increased load capacity through greater lateral stability

Some of our mobile cranes with a lifting capacity of 350 tonnes or more can be fitted with telescopic boom Y guying. This delivers enormous increases in lifting capacity to be achieved, particularly on long boom systems since it significantly improves lateral stability. During the guying process, on some mobile cranes the ropes are set to exactly the same length on both sides by clamping cylinders so that the boom is held in the best possible straight position in static load terms.

The design of the telescopic boom guying systems and the technical layout of the Liebherr mobile cranes allow that the cranes can be manoeuvred on site when erected.
The design of the telescopic boom guying systems and the technical layout of the Liebherr mobile cranes allow that the cranes can be manoeuvred on site when erected.

Manoeuvring on site

More information

Mobilkrantechnik im Überblick PDF (9.7 MB)
Mobile Crane Technology at a Glance PDF (8.4 MB)
Aperçu de la technique des grues mobiles PDF (8.4 MB)
Panoramica sulla tecnologia delle autogrù PDF (8.4 MB)
La tecnología de las grúas móviles PDF (8.4 MB)
Oбзор мобильной крановой техники PDF (8.5 MB)

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