BAUMA 2025 Ӏ LATTICE BOOM CRAWLER CRANES


10.1 tonnes each, depending


on requirements – without an auxiliary crane.


The position monitoring of


the suspended counterweight is designed to provide maximum safety during operation. If this is set down on the ground, it is not possible to turn or travel with the crane or move the counterweight. To help the operator determine the best boom combination for the respective jobsite requirements, and to simulate the lift in advance, Liebherr’s Crane Planner 2.0 lift planning software can be used. Other operator assistance and


control features on the LR 1400.1 SX include a gradient travel aid for the safe negotiation of slopes. The crane’s control system automatically calculates the centre of gravity and warns the operator before the crane leaves the safe area. Ground pressure is also


calculated in real time and the crane’s control system compares this with predefined safety limits for the respective jobsite. The ground pressure is displayed in the operator’s cabin. The ground pressure of the crane can also be reduced using the ground pressure reduction plates. During lifting work, the operator can lower these plates to increase the crane’s ground contact area. By doing this the ground pressure under the crane can be reduced by more than half. This is also particularly useful when lifting long booms from the ground, says Liebherr. Another safety enhancement is a boom up-and-down assistant system. When erecting or lowering the boom the assistance system indicates the approach to the tipping border and automatically stops operation before the operator unintentionally enters an unsafe zone. Controlled folding of the jib is activated simply by pushing a button. The speed of the laying


down procedure is controlled with a single joystick. In the process, the boom-up-and-down assistant chooses the safest method for laying down the boom.


EMISSIONS-FREE Liebherr also used Bauma 2025 to debut its 300-tonne capacity battery-powered LR 1300.2 SX Unplugged – a fully electric version of the LR 1300 which Liebherr launched almost 18 years ago. The LR 1300.2 SX Unplugged


is powered by a 438kW electric motor and, depending on the application, can be operated for up to 13 hours without a mains connection thanks to a 392kWh battery. Subject to the available


infrastructure on the job site the complete battery-charging process lasts between 4.5 and 8.5 hours. Whilst charging crane operation can continue as normal. Whether attached to the electric supply or not, the performance and range of applications remains unchanged. The derrick counterweight


system on the LR 1300.2 SX Unplugged also extends the crane’s range of possible applications – especially for heavy lifting and long boom combinations. Adjustment of the suspended counterweight is possible without an auxiliary crane. The LR 1300.2 SX Unplugged can be equipped with seven different boom configurations up to a maximum boom length of 169m. At Bauma 2025 it was shown with a 20m main boom and an adjustable 20m jib. The LR 1300.2 SX Unplugged


comes with many of the same digital assistance systems seen on the LR 1400.1 SX including Crane Planner 2.0, gradient travel aid, boom up-and-down assistance, and ground pressure monitoring. Like the LR 1400.1 SX, ground


pressure reduction plates, mounted at the front and rear of the crane,


The 200t Sany


electric lattice boom crawler on the Sanycranes. Services/UCM Holland stand had been bought by Dutch contractor Ploegam


reduce ground pressure by up to 56 percent.


The LR 1300.2 SX also has


Liebherr’s safety system for crawlers working on floating units. Liebherr also enjoyed sales of other lattice boom crawler cranes at Bauma. Czech company AG Transport, for example, ordered another LR 1800-1.0 – this time with the new X3A boom system, while Houston, USA-based Bigge Crane and Rigging bought three LR 1700-1.0 and three LR 1500 crawler cranes (plus 20 LTR 1220 telescopic crawler cranes!).


ELECTRIC AVENUE In the north lot of the outside area at Bauma 2025 was Chinese manufacturer Sany which was showcasing its flagship lattice boom crawler: the fully electric SCC2000A-EV. The 200t capacity crane has an 86m main boom, a 30m fixed jib and a 63m luffing jib. The crane has a maximum lifting moment of over 1300 tonne metres and a wide range of possible jib configurations to


CRANES TODAY 29


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