Comansa, a leading manufacturer of tower cranes for construction, has announced the global launch of its new model, 21LC1050, which has been designed to work in projects in which it is necessary to lift heavy loads.

The high capacity tower cranes with a flat-top model are available in three versions of maximum load: 25, 37.5 and 50 tonnes. Also these can be erected with reach of between 30m and 80m with configurations every 5m, said a statement from Comansa.

In addition, an optional jib configuration is being offered thus allowing the customer to have a special reach of 85m, it stated.

The characteristics of load, reach and mechanisms of the 21LC1050 make this model ideal to offer an optimal result in large industrial or mining projects as well as for the construction of buildings with prefabricated and steel structures of great tonnage.

The Spanish crane manufacturer pointed out that the design of the slewing (horizontal) part of the 21LC1050 was similar to that of the successful 21LC750 and 21LC660.

Instead of having a cusp element, the jib and counterjib join directly on the slewing part, which allows a much faster and safer assembly, it stated.

The 21LC1050 also shares a large part of the jib and counterjib sections with its "little siblings" 21LC750 and 21LC660, which allows optimizing the investment to customers who already own these models.

Among the novelties presented by the 21LC1050 is the design of its counterjib, which, like the jib, allows numerous different configurations to better adapt to the needs of each job.

Always having a counterjib radius as short as possible avoids possible interference with buildings or other cranes present in the same project, thus increasing safety, said a statement from Comansa.

The complete structure of counterjib consists of 5 modular elements that allow up to 6 different configurations.

Thus, when the crane is assembled with a maximum range of 80 m, the counterjib radius is 31 m, being able to reduce, for example, to 27 when the jib is 50 m, or to 21 when the reach is 30 m. In addition, the counterjib radius in all its configurations can be reduced by 1 additional metre with steel counterweights, which are offered as an optional element, it added.

Comansa said like the rest of its flat-top models, the 21LC1050 comes standard with the PowerLift system, which allows the crane to improve the load diagram by 10 per cent, always without exceeding the nominal capacity.

In this way, if the jib-end load of the 25 t model is 10,800 kg, when the crane driver operates the PowerLift system from the controls, the maximum load at the jib end increases to 11,880 kg, said the Spanish company in its statement.

Along with the 21LC1050 also new is its climbing cage, the J3-20. This hydraulic cage is compatible with other models from Comansa, like the LCL700 luffing-jib crane, and has a pushing force of 200 tonne, greater than any other jacking cage for 2.5-m-wide mast sections from the manufacturer. In addition, this new cage introduces other novelties with respect to other Comansa cages, since it speeds up the climbing process and reduces assembly time, it stated.

The 21LC1050 comes standard with the new CUBE cab in its XL version, the most spacious from Comansa. This cabin, which has received the prestigious "If" design award, ensures great productivity thanks to its fully glazed front and provides great comfort to the operator of the machine, the statement added.

Thanks to its maximum load of 50 tonne, the 21LC1050 becomes the largest capacity crane of the successful Comansa 2100 Series, formed entirely by flat-top models of large tonnage, said the company statement.

Among all the range, this crane is only surpassed by the LCL700 luffer, with 64 tonnes of maximum load, and the Flat-Top models 30LC1100 and 30LC1450, which have maximum loads of 64 and 90 tonnes respectively, it added.-TradeArabia News Service