25.03.2014

Liebherr adds 53K

Liebherr unveiled the new 53K self-erecting tower crane at the Bern 2014 construction equipment exhibition last week.

The new 50 tonne/metre class crane is based on Liebherr’s K series concept and fills the gap between the 42K.1 and the 65K. The new self-erector is said to offer improved erection system, more power, variability and safety features.

The 53 K has a maximum capacity of 4.2 tonnes, and a hook height, with horizontal jib of between 15.8 and 31 metres. The telescopic lattice tower, features a rapid climbing system, allowing up to three additional sections to be added. The hook height can be increased to 43.1 metres when the jib is luffed to 20 degrees above horizontal.
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The Liebherr 53K shows its compact base in Bern

The maximum radius is 40 metres, at which the 53 K can lift 1,100 kg in two line mode and 1,000 kg in 2/4-line mode. When the jib length is reduced to 28 metres, the jib tip capacity increases to 2,000 kg. Other possible jib lengths of are 34 and 37 metres.

The 53 K can be transported with full ballast on two trucks, while once on site its six metre wheelbase and compact slewing platform enables it to be manoeuvred easily. Its 4.2 metre square footprint and high jib erection in the air feature, allow it to be erected close to existing buildings.

The new crane features Liebherr's infinitely adjustable, energy-efficient frequency converter drive units, coupled with the current collector which allows unrestricted slewing also make a valuable contribution to ensuring that loads can be handled economically. It also features Micromove fine positioning mode which can be activated at the touch of a button. This enables heavy loads to be positioned with millimetre precision without engaging the hoist brake.
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The new Liebherr 53K