250 EC-B 12 Litronic Liebherr crane - load chart, specs & dimensions (2005 - 2024)

Liebherr high-performance drive units

All drives used on the EC-B Flat-Top cranes were developed and even manufactured at the Liebherr Group’s own competence centre for drive technology in Biberach. These intelligent drives offer excellent operating safety and are uncompromisingly efficient. High-performance drive units from Liebherr lead to significant increases in material handling output. Whether one-speed or two-speed FC hoist gear, FC or EDC slewing gear or FC trolley travel gear, we have the right drive for every job.

The FC hoist gear

When selecting hoist gear drives, you have a choice between one-speed and two-speed frequency controlled high-performance drives. They come with different capacities depending on operations. The greatest advantages they offer include automatic load detection, micro-speed travel, use of the entire control-lever travel range and load retention without application of the hoist gear brake. The load is delicately positioned at the touch of a button. These drives make safe command and optimal control of the crane really easy.

The FC slewing gear

The FC slewing gear drives enable absolutely jolt- and jerk-free slewing at micro-speeds. Wind and load influences are all detected. Integrated anti-sway damping detects and compensates for crane overshoot and load swing. The integrated electrical wind release can be activated directly at the base of the tower. A completely new development is personalised slewing. The crane operator now has a choice between three different operating modes: rotational-speed control, torque control or a combination of the two.

The FC trolley travel gear

Liebherr FC trolley travel gear is known for its delicate, stepless travel. A cable storage area is integrated into the cable drum for short working radii. Liebherr trolley travel gear offers excellent performance ranges and high trolley travel speeds, especially under load.

EC-B Flat-Top cranes

Liebherr works consistently on developing modular systems for simple, practical and quick assembly and which take into account the relevant safety aspects. The customer benefits from many simplifications, such as the quick-connection system for jib and counter-jib, new LiConnect jib connection system, a removable, pin-down crane cab, pin magazines and electric plug connections to the drive units and switchgear. Even electronic function modules such as work-area limitation (ABB) and remote data transmission (DFÜ) follow a modular system and are easily extended. All assemblies come pre-installed. Connect and Work – Assembly simplifications for practical use. Only at Liebherr.

Completely new jib technology

The EC-B jib sections are tight-welded. Internal rust and corrosion don’t stand a chance. The EC-B crane LiConnect quick jib connection system has been designed from scratch and patented. With the help of LiConnect, the jib sections are quick, safe and easy to fasten in place. The complete jib is pre-assembled on the ground. The jib sections are tight-welded to protect them from internal rust and corrosion.

Connect and Work

Liebherr works consistently on developing simple, quick and safe assembly systems. Many new ideas and innovations have been incorporated as practical details in the crane design. Plug connections ensure a quick erection. Even the high-performance hoist gear is quickly assembled using plug connections. The new LiConnect quick-jib connection is patented and sets new standards. The pin magazines sit in just the right place, within easy reach. The crane cab itself can be taken on and off and is quickly installed with the help of electric plug connections. Many sophisticated details come together for quick assembly times.

The small and medium-sized EC-B cranes.

These Liebherr cranes are characterised by their quick, easy assembly. The compact head is mounted by an auto crane in a single lift. All drive pedestals and rails are zinc-coated and designed to last. All drives are easy and safe to reach for maintenance work straight from the compact head. The newly designed comfort cab is attached and removed by means of quick-release fastenings and is identical for all small and medium-sized EC-B cranes. This cuts crane fleet costs. The cranes are used in either 2-fall or 2/4-fall mode, or exclusively in 2-fall where the FR.tronic version is concerned.

Connect and Work. Quick assembly.

Preassembly of the newly designed counter-jib is carried out in just a few manoeuvres on the ground. The rails have a fold-out design, meaning once unfolded all rails are fully attached. Assembly has also been simplified by means of fold-out assembly supports for use in positioning the counter-jib guying system. The guy rods are in the exact assembly position. The compact head is put in place by an auto crane in a single lift. This compact head is delivered pre-installed. Only a few plug connections are needed to complete the electric installation. Pin magazines are positioned within easy reach. As soon as the compact head has been positioned on the tower, it can be slewed into the perfect assembly line.

The compact head.

The central feature in the EC-B series is the newly developed compact head. The complete unit contains movable cab, switchgear cabinet, fold-out frame, slewing gear, slewing ring with slewing ring support and current collector. The electrics are soon connected by means of just a few plugs. Just one central switchgear cabinet is integrated into the compact head for the whole crane. Maintenance work is easy and safe to carry out. The compact head of the EC-B cranes leaves the factory completely pre-installed. The compact head can be transported in a standard truck and mounted by an auto crane in a single lift, with no intermediate hanging. The fold-out frame and the counter-jib guying system are simultaneously moved into assembly position, ready for operation. For use on construction sites, the comfort cab is simply shunted forwards. Connect and Work.

One lift from the truck and it’s up on the tower.

With no intermediate hanging of the compact head, this central unit is hoisted onto the tower in a single lift. As soon as the compact head has been mounted onto the tower and the electric connection established, it can be slewed straight into the ideal assembly position. The compact head leaves the factory completely pre-installed.

Assembly-friendly transport.

For efficient transportation, the counter-jib is loaded using a piggyback system. Again, the rear part of the counter-jib is pinned directly to the rest of the counter-jib from the truck. The compact head is transported upright in the truck. The entire EC-B series is laid out in standard 40' containers for loading. The entire upper part of the 280 EC-B 12 Litronic crane can be transported at maximum radius in four standard 40' containers.