ALL TERRAINS Ӏ SECTOR REPORT
j The crane features a series of advances that put it, say Tadano, at the top of its capacity class. Though it is on seven axles it still fits in the six-axle class in terms of its dimensions, with a carrier length of only 15.99 metres, an outrigger base of 8.49m, and a total length of 17.62m. It is a significantly more powerful option than all six-axle units that are currently available on the market, say Tadano, and even matches that of eight-axle cranes in a number of boom positions. It has an 80m boom; a patented luffing jib rigging system for particularly easy, fast, and safe setup; and a new SSL (Sideways Superlift) system in which the Superlift arms are mounted right at the front of the head, meaning that they are ultimately longer and provide larger lifting capacities. And in July this year (2021)
Tadano launched in Japan its 700t-capacity AR-7000N, which it
Tadano’s
2.040.1, with added Demag expertise, at its unveiling
says is the highest-lifting-capacity all terrain from a Japanese manufacturer. Its previous offering, the 550t AR-5500M, was also the largest all-terrain crane in the Japanese market when first introduced in 1998. It has long served large-scale infrastructure projects such as highways and bridge construction; as customers take on larger projects that require increases in capacity and efficiency, Tadano has responded with the AR-7000N, which comes on a seven-axle chassis – something that Tadano claims no other crane offers. New materials and advanced design have given significant weight reduction and up to 40% improvement in performance, while still maintaining the same dimensions and weight as the AR-5500M. Lifting performance has been improved by up to 40% over that crane and is especially increased in the 20m working
radius – which is popular in bridge construction. The boom performance has also been significantly improved, by between 10% and 40%; the crane has a new 43m four-stage ESP boom, replacing the three-stage boom of the AR-5500M. Since the four- stage version eliminates the need to assemble the conventional fixed boom when combined with the luffing jib, on many tasks this bypasses the need to secure assembly space and reduces assembly time. A single cylinder extends and
retracts the boom, making it lighter while improving capacity. When fixed boom and luffing jib are used the maximum ground lifting capacity is 140.5m, which greatly expands the working area. A six- stage ESP boom is also available that adds even more length. The crane’s overall width is
3m and its height is just 4.3m. Maximum speed is 62.5 km/h. f
24 CRANES TODAY
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