Comansa has added two new models to its successful 21LC series, as an evolution of the 21LC550 model, with two options: 20 and 25 ton maximum load, which can be assembled with ranges of between 30 and 80 metres with configurations every 5 metres, allowing a maximum point load of up to 4.95 ton. Both models incorporate an optional boom configuration that allows the total range to be extended to 85 metres at the tip. Compared with the 21LC550 model, load capacities are on average 16% higher for the 21LC600 and 23% higher for the 21LC650.

The extension of the range incorporates ergonomic improvements and modularity novelties that facilitate optimisation of use on site. The first of the new features in these models is that they have a shorter, modular counter-jib, ranging from 24.4 to 16.4 metres and have up to 5 possible configurations. This concept has a precedent in models 21LC750 / 21LC1050 / 21LC1400 and offers greater adaptation to the work configuration in reduced spaces.

Another strong point of these models is the improved access to the turntable and the rotating part - the cathead has been redesigned to facilitate the passage of lifting cables, including a welded ladder that allows access to the highest part without the need for the cab platform. Access to the cab platform is now direct via the turntable due to the folding ladder, preventing falls while working on the upper level and also being easier to transport.

As a standard feature, both the crane models offer the double trolley system with automatic changeover (called DT in the data sheets), and incorporate (as a novelty), the optional availability of single trolley (ST), which simplifies maintenance work while increasing load capacity in short boom lengths. The height, which is self-supporting with a built-in base, can reach up to 85.8 metres. Also, the tower sections are 2.5 sqm for both models.

Taking advantage of the launch of the new cranes, a new climbing cage is presented: J3A-11, which follows the concept of the J3-20, with greater length and distance between rollers, a saving in scale recovery time, due to the auxiliary hoist included, which can also be transported in standard containers or trucks.

As regards the lift engines, the standard for the 20-ton versions is 50 kW, while for the 25-ton it is 65 kW. The 110-kW engine is optional for both versions, with a speed of up to 290 m/min and maximum capacities of 1,570 metres of cable. The Effi-Plus technology, fitted as standard, significantly increases lifting and lowering speeds for light loads, shortening working cycles without increasing power or consumption.

The modularity, an inherent quality of Comansa cranes, allows certain boom sections to be interchangeable within the 21LC-crane series, which enables rental companies to reduce their stock, optimising their investments, as they can order these new cranes with a shorter boom length if they have previous cranes of the same series in stock.

The new COMANSA 21LC600 and 21LC650 tower cranesThe new COMANSA 21LC600 and 21LC650 tower cranes have two maximum load versions: 20 and 25 tonnes

Both models come as standard with the CUBE cab in its L version, with the XL available as an option. A cutting-edge design that is safer, more comfortable and provides operators with total visibility of the load and workspace, so that they can carry out operations more easily with the digital control technology incorporated.

As is customary with Comansa’s flat-top models, assembly is easier, faster, and safer, providing a longer life for the structure. The 21LC600 and 21LC650 Flat-Top tower cranes can be used for the construction of residential and commercial buildings, as well as power plants, mining, bridges, and other infrastructure.
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