Comansa has added two new models to its successful 21LC series - the 21LC600 and 21LC650 - as an evolution of the 21LC550 model. They offer two versions: 20 t and 25 t maximum load capacities.
The jib lengths of the new cranes are between 30 m and 80 m, in increments of 5 m, allowing a maximum tip load of up to 4.95 t. The optional boom configuration enables the total range to be extended to 85 m at the tip.
Both models are suitable for construction of residential and commercial buildings, as well as power plants, bridges, mining and other infrastructure projects. According to Comansa, compared with the 21LC550, load capacities are on average 16% higher for the 21LC600 and 23% higher for the 21LC650.
The new cranes are designed with a shorter, modular counter jib ranging from 24.4 m to 16.4 m, with five possible configurations - making them ideal for use in restricted jobsites. This feature is also available on the 21LC750, 21LC1050 and 21C1400 models.
Another highlight of the new cranes 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 enables access to the highest part without the need for the cab platform. Access to the cab platform is now direct via the turntable thanks to the folding ladder, preventing falls while working on the upper level and also being easier to transport.
The 21LC600 and 21LC650 feature a double trolley system with automatic changeover (called DT in the data sheets). A single trolley (ST) system is optional. The cranes’ height is self-supporting with a built-in base, and can reach up to 85.8 m. The tower sections are 2.5 sq m for the two cranes.
In addition, Comansa has introduced a new climbing cage, the J3A-11. This unit is based on the J3-20, but with greater length and distance between rollers, providing savings in scale recovery time.
The 20-t version of the new cranes is equipped with a 50 kW hoist motor, while the 25-t version with 65 kW. A 110-kW option is available as well, with a speed of up to 290 m/min and maximum capacities of 1,570 m 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.
Owing to Comansa cranes’ modular design, certain boom sections are interchangeable within the 21LC series – an advantage for rental companies. Both new cranes also come with the L version of the Cube cab, with the XL version available as an option.