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Liebherr unveils battery-operated crawler crane

Liebherr-Werk Nenzing GmbH has already delivered the first three LR 1160.1 unplugged cranes. (Image source: Liebherr)

Liebherr-Werk Nenzing GmbH have released the LR 1160.1 unplugged, one of the world’s first battery-operated crawler cranes

The electro-hydraulic drive has the same performance specifications as the conventional version. Both versions are operated in the same way, which is especially convenient for machine operators if they often have to switch between machines

One exceptional feature of the unplugged machines is that they do not produce any emissions and are extremely quiet. This is particularly useful in noise-sensitive regions, and finds favour with construction site personnel and residents. 

In idling mode the sound pressure level of three unplugged cranes, at a distance of 16 m, is equivalent to that of a normal conversation on the jobsite at a distance of 1 m. If it is taken into account that a crawler crane is in idling mode for 60% of the time on the jobsite, this low noise level is an advantage with great resonance.

The LR 1160.1 unplugged can be operated with or without cable and capacity of the battery is designed for 8 hours lifting operation. The crane can be operated without restrictions while plugged into a conventional electric supply with 63 A, or charged within 4.5 hours. Using a 125 A supply, the battery can be fast-charged in only 2.5 hours.

Just like every crawler crane from Liebherr-Werk Nenzing GmbH, the LR 1160.1 unplugged is equipped with all established assistant systems for safe operation. 

The Gradient Travel Aid is incorporated for the safe negotiation of slopes and inclines and the crane’s control system automatically calculates the centre of gravity and warns the operator before the crane leaves the safe area. If necessary, the boom angle can be altered so that the machine remains in the safe area.

When erecting or lowering the boom, the Boom Up-and-Down Assistant indicates the approach to the tipping border and automatically stops operation before the operator unintentionally enters an unsafe zone. 

Liebherr-Werk Nenzing GmbH has so far delivered the first three LR 1160.1 unplugged cranes to Select Plant Hire Company Ltd in Great Britain.

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