Gulf Construction Online - Raimondi luffing unit is a powerful performer

Cranes

The LR372 can work up to 380 m with two falls and 820 m with one fall.

Raimondi luffing unit is a powerful performer

01 October 2019

Raimondi Cranes has unveiled the LR372, the latest heavyweight addition to its advanced luffing range.

Equipped with Raimondi’s next-generation high-performance winches, the LR372 is a 370-tonne-m-class luffing tower crane with a maximum jib length of 60 m and a maximum capacity of 20,000 kg in two falls configuration. At the maximum radius, the LR372 can lift 3,795 kg 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 on the luffing LR330 that was launched last year,” says Domenico Ciano, CEO of 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 m, or the 2.3-m-wide GR6 tower series (GR6B, GR6 and GR6L inclusive), for standard, external, and internal climbing configurations,” he continues.

All of these towers are available in different lengths for easy crane configuration. To address the technical aspects of the crane’s enhanced design, Ciano adds, Raimondi has worked closely with its supplier to develop a new motor that would optimise winch performance while reducing energy consumption, now implemented in both the LR372 and the LR330.

“Raimondi’s engineering team completed the design of our new LR372 in six months, including the new winches installed on it. We have invested more than 2,000 hours between the mechanical and control system designs with a major focus on ease of use, maintenance accessibility, and structural strength,” he says.

The LR372’s luffing movement, using the new 75-kW winch, is equipped with a standard emergency brake. The raise of the jib from 14.5 to 85 degrees takes approximately 2.1 minutes with full load.

“In terms of the hoisting movement, the LR372 is powered by the 110-kW winch with 880 m 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 with two falls and 820 m with one fall. The LR372 can reach a maximum lifting speed of approximately 256 m per minute,” says Ciano.