The high capacity towers are designed mainly for heavy industry, mining and public works, Linden Comansa said.

‘Spectacular’ is the word Linden Comansa uses to describe their dimensions. The masts reach heights of 40–80m (131–262ft) and the jib has sections every 10m (33 ft). The largest tower section is 6.2m high (20ft) and 10m long (33ft).

Linden Comansa has been making tower cranes with large capacities for decades: Swedish firm Linden, before it was bought by Comansa, made them in the 1970s and Linden Comansa custom-made 60t (132,277lbs) capacity towers in the 1990s.

Innovations in the LC3000 series’ design allow the company to provide it with shorter manufacturing, and hence delivery times, and to provide it with overall cost reductions.

Delivery times are between 10 and12 months, although this may be reduced to 6 months as the production process is improved.

The series contains two models, 30 LC 1100 and 30 LC 1400, and these are offered in maximum load capacities of 32, 48 and 64USt (70,550, 105,820 and 141,090lbs).

Among the innovations cooked up is a new structure that incorporates newly patented jib and tower sections.

Researchers developed a 5.5m (18 ft) wide tower section to enable the LC3000 to reach higher freestanding heights.

Linden Comansa explained the design of the mast section. It said, “This mast section consists of the same quadrants that the 4-metre-wide section, plus one panel for every side and an additional central body that assures the stability of the crane and leaves space for the accesses and platforms. “

The design retains some attractive features of previous flat top designs and provides the same ease of transport and erection, as well as the modularity of components, Linden Comansa said.

Transport is made easier thanks to a new system that allows users to fold the upper part of the jib, these sections fit into an open-top container, while the rest of jib sections fit into normal containers.

This allows considerable savings in delivery using conventional types of transportation, the company said.

The cranes of the LC3000 family are erected over tower sections that are 4 meter wide (13 ft.), and 5.5 meter high (18 ft.), specially designed for this series.

Using fixing angles or over a 10-meter-wide (33 ft) “H” base, or a modified version of the existing 10-meter-wide folding cross for the LC3000 1100, the LC3000 series can be securely erected.

While the maximum freestanding height of these cranes is 88.8 m (291 ft), they can reach higher with tie frames. By way of an example, the company said the crane could be raised to a height of 198.3m (650 ft) using two tie frames.

Interchangeability is possible with sections on the LC3000 series, which may be used with the tower sections of Linden Comansa’s other series, 21 LC 750, to enable the smaller capacity cranes to reach greater freestanding heights.

Included as standard is a hoist mechanism of 200 kW (268 hp) with frequency control, drum with capacity for 1,450m of wire (4,757 ft), and Linden Comansa’s unique double trolley system that enables changing the reeving automatically.