PMV Middle East
LIEBHERR’S NEW ALL-TERRAIN CRANE CARRIES 90M TELESCOPIC BOOM WITH AXLE LOAD OF 12 TONNES
The Liebherr LTM 1300-6.3 all-terrain crane can carry a 90-metre telescopic boom with an axle load of 12 tonnes. The 300-tonne model is part of Liebherr’s six-axle cranes and suitable for erecting tower cranes and antennae as well as maintaining wind turbines.
Liebherr has designed the LTM 1300-6.3 to be driven with different axle loads and gross weights. Components such as the telescopic boom and outriggers can be installed and removed quickly and easily to achieve axle loads of less than 12 tonnes. A feature called tele-separation enables individual telescopic sections to be removed quickly. This makes it straightforward to set up the crane for the road with a gross weight of less than 60 tonnes and axle loads of under ten tonnes. Liebherr can also deliver a self-assembly solution which enables the telescopic sections to be removed without the need for an auxiliary crane. This is compatible with other models such as the LTM 1650-8.1 and the LTM 1450-8.1.
Telescopic boom length: the length of 90 metres is achieved by using an 8-section telescopic boom – the pivot section plus seven telescopic sections. That is one section more than similar cranes in this class. To ensure that the complete boom as well as all the outriggers plus the hook block can be carried on public roads with an axle load of 12 tonnes, Liebherr has optimised the entire steel construction of the crane for lightweight construction.
Although the LTM 1300-6.3 is not designed for use as a luffing jib crane, it has a wide range of lattice jibs available – 11.5 to 20 metre double folding jib, two 7 metre lattice sections to extend the telescopic boom, a 39 metre powerful fixed jib and a 43 metre hydraulically adjustable fixed jib. That enables the crane to reach hoist heights of up to 120 metres.
Wind speed load charts: load charts available for various wind speeds are available for the LTM 1300-6.3. They deliver enhanced safety and longer operating times for crane
work in windy conditions. Load charts for cranes are generally only valid for gust wind speeds of up to 9 m/s. To ensure that work can continue safely in even higher wind speeds, Liebherr has calculated the load charts for additional maximum wind speeds and programmed them in the crane control system. For the LTM 1300-6.3, for example, it is 11.2 m/s, or even 13.4 m/s when using lattice equipment. In pure telescope mode, the tables allow for a speed of 15.6 m/s. If the wind speed measured on the crane’s boom during a job exceeds the set chart wind speed, the crane operator can switch to a load chart with a higher maximum wind speed which will often allow the job to be continued.
Variobase Plus: the rear supports have a double-stage design and achieve a support width of 9.4 metres, 2 metres wider than the front supports. This increases the capacity over the rear supports even more. The singlestage front outriggers have a lower weight, which also benefits the boom length.
Ecodrive mode: an eight-cylinder Liebherr diesel engine in the undercarriage which develops 455 kw / 619 bhp and torque of
3,068 Nm provides the LTM 1300-6.3 with all the power it needs. The power is transferred to the crane axles by the 12-speed ZF Traxon torque gearbox. A torque converter ensures perfect manoeuvring. The additional Ecodrive mode delivers enhanced drive properties which both save fuel and reduce noise.
Single-engine concept with Ecomode: Liebherr has continued its single-engine strategy on the new LTM 1300-6.3 with a mechanical power unit for the superstructure. The weight reduction created by removing the superstructure engine has been used to deliver a longer boom and more ballast with an axle load of 12 tonnes. The Ecomode in crane operation helps to reduce fuel consumption and noise emissions.
The complete pump drive is disconnected automatically when the engine is idling and then reconnected by the intelligent controller in a matter of seconds when required.
Varioballast: the LTM 1300-6.3 can be operated with two different ballast radii:
4.94 m or 5.94 m. The ballast radius can be reduced by one metre using standard mechanically adjusted ballasting cylinders. This is one of the main benefits of the crane when used in constricted conditions. The large ballast radius achieves maximum capacity. In fact, with its Varioballast feature, the new crane can be operated with 8 tonnes less ballast compared to the LTM 1300-6.2 without any significant reduction of its lifting capacity.
Auto-ballast: a touch of a button secures the ballast to the turntable and takes the strain off the crane operator. The maximum ballast on the LTM 1300-6.3 is 88 tonnes. The 10-tonne suspended ballast blocks on the right and left are compatible with the LTM 1230-5.1 and LTM 1250-5.1 crane models. The individual ballast slabs have been modified in terms of their weight and dimensions to make them suitable for economical transport and fast, easy set up on site. All the ballast can be placed on the crane with five hoists. The basic ballast of 42 tonnes has a width of 3 metres, which fits within the overall width of the vehicle. This makes it significantly easier to move the fully set-up crane on constricted sites.
New options: the optional central lubrication system for the king pin bearings on the chassis is a new feature. It delivers grease to 24 lube points on the 6-axle crane automatically. Another highlight is that a total of six LED rear lights are available to order, which illuminate the working area perfectly with bright light for manoeuvring on the site.