Raimondi Cranes Announces New High Performance Luffer
July 2, 2019 - Raimondi Cranes has released the latest heavyweight addition to its advanced luffing range, the LR372. Equipped with Raimondi’s next generation high performance winches, the LR372 is a 370-ton-m class luffing tower crane with a maximum jib length of 60 m (196.8’) and a maximum capacity of 20,000 kg (44,092 lbs.) in two falls configuration. At the maximum radius, the LR372 can lift 3,795 kg (8,366 lbs.) using Ultralift mode, making this Raimondi’s most powerful luffing crane to date.
“Following our internal tests and procedural checks, the LR372 was in testing phase for a total of three months. This short period of time was possible due to the crane’s main design engineering aspects being based off of the luffing LR330 that was launched last year,” said Eng. Domenico Ciano, CEO, Raimondi Cranes. “One very important feature of the LR372 is that it may be installed on two different types of towers. For an internal climbing system, the new GR5H tower at a width of 2.0 m (6.5’) or the 2.3 m (7.5’) width GR6 tower series (GR6B, GR6, and GR6L inclusive), for standard, external, and internal climbing configurations.”
All of the aforementioned towers are available in different lengths for easy crane configuration. The GR6L towers can be installed on embedded legs and on an 8 x 8, in addition to the new 6 x 6 m strut cross base with or without traveling system. The GR5H towers can be installed on embedded elements and on a 6 x 6 m strut cross base.
Raimondi worked closely with its supplier to develop a new motor that would optimize winch performance while reducing energy consumption now implemented in both the LR372 and the LR330.
The LR372’s luffing movement, using the new 75 kW (100 hp) winch, is equipped with a standard emergency brake. The raise of the jib from 14.5° to 85° takes approximately 2.1 minutes with full load. “In terms of the hoisting movement, the LR372 is powered by the 110 kW (147 hp) winch with 880 m (2,887’) rope capacity, and is equipped with the hydraulic emergency brake as a standard feature. Thanks to its outstanding drum capacity, the LR372 can work up to 380 m (1,247’) with two falls and 820 m (2,690’) with one fall. The LR372 can reach a maximum lifting speed of approximately 256 m (840’) per minute,” said Ciano.
The new slewing movement is driven by the two 15 kW (20 hp) motors fully controlled by inverters, allowing it to reach a slewing speed of 0.8 rpm.