China’s XCMG has launched a trio of lattice boom crawler cranes in the XGC series between 55 and 85 tonnes capacity.
Easy transport was a primary requirement in the design of the 55 tonne capacity XGC55, 75 tonne XGC75 and 85 tonne XGC85. Removal of the track frames is unnecessary and counterweight slabs are a maximum of 5 tonnes so small auxiliary hoisting equipment can complete counterweight assembly, XCMG said.
All three models are based on the same platform. Interchangeable parts include their fixed jibs, single pulleys at the boom ends, counterweight, luffing mechanism, hydraulic pumps and main valve blocks. Benefits are to reduce the purchase, transportation and maintenance costs, the manufacturer said.
Main boom on the 203.5 tonne-metre rated XGC55 is 52 metres. The largest component for transport is 12.04 x 3.45 x 3.36 m and weighs 28.6 tonnes. Total weight of the crane with main boom and hook block is given as 46.3 tonnes.
On the 286 tonne-metre XGC75 the maximum main boom is 58 m. While the largest piece for transport is almost the same as on the smaller model, its weight is 37 tonnes and the machine’s total weight is 61 tonnes. Maximum main boom on the 341 tonne-metre XGC85 is 58 m. Total weight is 71.5 tonnes and the largest piece for transport is 13.05 x 3.4 x 3.3 m and weighs 41.2 tonnes.
Operation of the XGC series is simplified by being able to change between main and auxiliary hook operation by means of a switch, the manufacturer said. Reliability, efficiency and reduced maintenance were priorities in the design of the hydraulic system, according to XCMG. Power for the three cranes is from 128, 154 and 200 kW diesels.