Liebherr showcased several new cranes at its triennial Customer Days, held June 13 and 14 at its plant in Ehingen.Ttwo new products were unveiled—a 242-ton telescopic crawler and an 856-ton AT—stealing the show was the LR 13000, a 3,307-ton crawler crane with P-boom (Power or Parallel boom) system. Although it is difficult to describe the overwhelming size of this crane, a demonstration of its capabilities helped put it in perspective. Additionally, Hutton Strader, a national accounts sales manager for Liebher Cranes Inc., quipped: “This crane is so big that your assist crane needs an assist crane.”
In the demonstration, a scale model of a crane mounted on a platform, was lifted by an LTR 1100. The 110-ton telecrawler was then lifted by a 330-ton LR 1350/1, which proceeded to be lifted by a 1,488-ton LR 11350 crawler. Finally, the LR 13000 completed the demonstration. The cranes had an overall combined weight of 5,511 tons. Operating at 94 percent of its capacity, the LR 13000 proceeded to rotate and travel with the gigantic dangling display, reminiscent of an infant’s crib mobile. In this configuration, the LR 13000 exhibited 70-tonnes per square meter of ground pressure.
The LR 13000 on display, which is the first crawler crane to be equipped with Liebherr’s LICCON-3 monitoring system, is the second unit Liebherr has built. The first unit, purchased by Mammoet Global B.V., is currently in route to Whiting, Ind., where it will be used on a refinery extension project this fall. Other applications for which the LR 13000 is intended include nuclear power station construction and pre-assembly of offshore structures, such as oil platforms—all cases where industrial components often weigh in excess of 1,500 tons and measure more than 300 feet long.
According to the manufacturer, the LR 13000 is the only crawler crane in this class that can work without derrick ballast. This is achieved by an extremely powerful slewing ring, developed and manufactured by Liebherr. In fact, the slewing bearing for Mammoet’s unit was loaded on a truck and headed out the gate around the same time U.S. customers arrived at the plant last week.