The improvements made following the revision of the successful 21LC290 result in a new tower crane model with an optimized load diagram.
This new tower crane is the result of the review of the 21LC290, a model which will be replaced by the 21LC335. The changes made as a result of this review have led to an important increase of load capacity with maximum reaches. For example, the 21LC290 18t with a 50 meter can load 511,680 lb. at the end of the jib, while the new 21LC335 18t with same jib length loads up to 14,550 lb., almost 25% more. With this same 50 meter jib configuration, the 21LC290 moved the maximum load of 18 tons 53.5 ft., while the 21LC335 moves the maximum load up 64.3 ft., 20% more.
The tower sections of the 21LC335 are the same as the 21LC290, and the jib and counterjib sections are also the same as its predecessor. There have been modifications only on the cat head and the upper turntable, allowing customers who would like to convert their 21LC290 into a 21LC335 to do it by replacing these two elements and modifying the configuration of the counterweights.
The 21LC335 crane comes standard with an Effi-Plus high speed hoist mechanism that reaches speeds of up to 150 492 ft. per minute, optional engines can reach 228 meters 748 ft. per minute. Like the rest of Linden Comansa’s flat-top cranes, this new model includes the PowerLift system.