ALL TERRAIN CRANES Ӏ SECTOR REPORT
j loads. All terrain owners who
want to travel longer distances, often want to carry the boom behind the cab, on a boom dolly, for lower axle loads. It makes sense for a boom designed from the start for use with a dolly to be slightly shorter. “That allows you to distribute
the vehicle weight over more axles by putting the boom in a trailing dolly,” says Soper, “You're under regulation weights for multiple states, so you don't need to stop [at state borders] and wait for your paperwork.” According to Soper this
approach is followed across the crane’s design: “We have a higher travel speed at 55 mph. That’s on the high end for the all terrain frame market. Typically all terrains are road speed limited at 49mph. We've also incorporated a two fuel tank system with a maximum capacity of 160 gallons of fuel. Being a single engine crane you have to be able to get to the job and have enough fuel to do the work.” The crane is designed with a low emissions future in mind. Arguably, just by forming booms on site, the manufacturer is cutting the embodied emissions of its cranes: it’s slightly more efficient to ship flat plate and then form it, than to ship formed booms. But day-to-
Link-Belt
Manitowoc Tadano Tadano
Manitowoc Link-Belt Liebherr
Manitowoc Tadano Liebherr
LTM 1250-5.1 ATC-3275
GMK5250L-1 AC 5.250-1 AC 5.250-2
GMK5250XL-1 300|AT
LTM 1300-6.2 GMK6300L-1 AC 6.300-1
LTM 1300-6.3
Capacity 250 250 250 250 250 250 275 300 300 300 300
Andrew Soper in
front of the 300|AT at ConExpo 2023
day, the crane cuts emissions with an efficient modern engine, which is ready to be used with HVO fuel. Soper sees potential for the crane in the telecoms, heavy civils, wind farm assembly, and oil and gas sectors. At the same time, he says, the crane is well suited to taxi work.
LONG LIEBHERR Liebherr’s LTM 1300-6.3 takes a markedly different approach to boom and carrier design. This crane, like all of the 300 metric tonne cranes on offer, travels
A comparison chart for all terrains with capacities between 250–300 tonnes Manufacturer Model Liebherr
Axles 5 5 5 5 5 5 5 6 6 6 6
Boom Max height 60.0 68.0 70.0 70.0 70.0 78.5 72.5 78.0 80.0 80.0 90.0
108.0 106.8 110.0 111.0 114.0 109.0 112.0 114.0 120.0 123.0 120.0
on six axles. Other cranes in the segment, including Liebherr’s LTM 1300-6.2, Manitowoc’s GMK6300L-1, and Tadano’s AC 6.300-1, have booms of around 80m (the other Liebherr is a couple of metres shorter, at 78m). The LTM 1300-6.3, launched in 2022, adds ten metres to this, with a boom length of 90m. Maximum height for all four cranes ranges from 114m on the shorter boom Liebherr through to 123m on the Tadano. Like the new Link-Belt the big Liebherr is well-suited to work on telecoms masts, Liebherr says, but it also can be used for tower crane erection. Being able to turn up to a city centre job site, set up your outriggers asymmetrically, and start lifting on a 90m boom, can help reduce the need for road closures. To achieve these impressive main boom lengths and
accommodate the additional boom section needed compared to other cranes in this class, Liebherr has focused on a highly optimised use of steel. Larger cranes used on tower
18 CRANES TODAY
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