The six-axle Demag AC 300-6 all-terrain crane features a 262-foot main boom, a lifting capacity
of 33,100 pounds with the main boom fully extended, as well as a luffing jib. This combination,
says Demag, enables the AC300-6 to deliver a lifting capacity and reach that make it possible to
carry out demanding lifts, while keeping operating and transportation costs lower than those for
cranes in the 330-ton-capacity class. The new crane, says Demag, is well-suited as an assist crane
for erecting large tower cranes. Without the jib, the AC300-6 can complete lifts to heights of 255
feet.
For even greater ranges, says Demag, the AC 300-6 can be equipped with various
extensions—from a 36-foot or 68-foot HAV main-boom extension, through 170-foot and 108-
foot LF and SF extensions, all the way to luffing jibs with a length of up to 206 feet. Potential
maximum system length is 394 feet. A patented set-up system for the luffing jib ensures safe,
fast assembly, says the company, and the process does not require an assist crane, nor does it
require work at height.
Equipped with the Demag IC-1 Plus control system, the AC 300-6 can handle lifts that normally
require larger cranes, says the company. According to Demag, the control system continuously
calculates the crane’s lifting capacity for every boom position as a function of the
superstructure’s slewing angle. This means, says Demag, that the lifting capacity for a specific
radius is no longer limited to the lowest value for a pre-calculated 360-degree lifting capacity;
instead, the crane can take full advantage of the maximum available lifting capacity, facilitating
lifts requiring an asymmetrical outrigger setup.
The AC300-6 has a carrier length of 50.2 feet and a width of 9.84 feet and can be equipped with
all-wheel steering as an option. The new model uses single-engine, a 617-horsepower Mercedes
Benz diesel engine, and a Mercedes Benz turbo retarder clutch. On the road, the crane stays
below permissible axle load limits of 13.22 to 18.18 tons, says Demag. With the use of various
transport dollies, as well as by removing the boom, the AC 300-6 can be configured in such a
way as to stay within the legal axle load
