Linden Comansa is launching a new series of flat-top tower cranes. The new LC1600 series will be available in October 2011 and will be formed by three new models -- 16 LC 185, 16 LC 220 and 16 LC 260 -- which will come in different versions of maximum load, the company said.
The LC1600 series has been designed with Linden Comansa's modularity and ease of assembly and transport, the company said. Due to its load capacity, between 8 and 12 tons, the new series fits between the LC1100 (5 to 8 tons) and LC2100 (12 to 48 tons) families.
The introduction of this series will mean that the 21 LC 170 and 21 LC 210 cranes, with very similar characteristics to the new models in terms of jib length and load capacity, will no longer be produced, the company said.
The cranes of the LC1600 series share the jib sections and the counterweights with those of the LC1100. The interchangeability does not end there, since the counterjib of the LC1600 is compatible with the one from the LC1100 series, allowing for the reduction of the counterjib radius. In addition, the trolley and hoist mechanisms and the trolley-hook joint of the cranes from the LC1100 series can be used in the cranes of the series LC1600 series, which offers an advantage for users that own cranes of both series.
With the LC2100 series, the new family shares the 2 meter wide tower sections, as well as the climbing cage and the 4.5- and 6-meter wide cross bases. With a transition section, the cranes of the LC1600 family can be erected on 2.5 meter wide tower sections, to obtain freestanding heights superior to 100 meters.
One of the design advantages of the series is that the cranes don't have apex element in strict sense, the company said. The first counterjib section is placed on the gyratory part and, once mounted, the first jib section joins in one end and the rest of the counterjib at the other. Due to this design, the transport speeds up and some unload maneuvers before the erection are avoided. This design, which saves costs in equipment and improves the ease of erection, is based on the 21 LC 750, the first Linden Comansa model without apex element.
The double trolley system of the new series of cranes is similar to the one used in the LC1100 and LC2100 series, though it has been adapted to maximum loads of 12 tons. The trolley-hook joint, with pre-installed reevings, comes in a frame to ease the assembly, transport and storage, the company said.
The hoist mechanisms include the Effi-Plus System, which improves up to 70 percent the speed of hoist and descend movements. With this system, the productivity during hoist operation is improved up to 27 percent, without any increase in power or electricity consumption, Linden Comansa said.
The jib sections are narrow, and the tower sections can be dismantled in panels, which easies the transport of the crane. In addition, the elements of the LC1600 have been designed by light erection weights (the heaviest element is 6 tons), which allows a faster and safer assembly.
The cranes of the C1600 series are the first from Linden Comansa to include frequency control in the slewing movement. In addition, the smaller size and less warming of the engine, as well as the use of the same brake and weathervane than most of Linden Comansa's cranes, minimize possible maintenance problems and search of replacements, the company said.
Among the optional components of the LC 1600 series is the Panoramic XL cab, bigger and with more comfort elements for the crane operator, and a Lebus drum for the 65 kW hoist mechanism, with capacity for more than 1,200 meters of wire.