Three new all-terrains, an upgraded AT, a new crawler and an upgraded crawler will be among the 70-plus pieces of construction equipment occupying Liebherr’s 10,000 square metre stand at Bauma.

The 10 telescopic all-terrain cranes on show, ranging in capacity from 35t to 500t, include new models rated at 55t, 200t and 250t.

Liebherr says that the new, three-axle 55t LTM 1055/1 is the strongest in its class. This has been achieved by using the high grade S 1100 QL steel and Telematik boom system that is featured in the larger LTM models. Weight has also been minimised by using aluminium and synthetic materials for both cabs, the cover panels and tanks. Originally conceived as a 50t lifter, it has come to market with the revised rating.

The LTM 1055/1 features the new ZF AS Tronic constant mesh gearbox with automatic shift, as featured in the 100t LTM 1100/2. This combines the operating convenience of automatic transmission with the advantages of the narrow steps and wide gear ratio spread of a 12-speed manual gearbox. The system gives a 15% improvement in fuel efficiency, it is claimed.

The 40m oval section telescopic boom uses Liebherr’s Telematik telescoping system with its single-stroke ram. With 9m to 16m double folding fly jibs it can operate at working heights of up to 58m, where it can lift a maximum 3.1t, and working radii of up to 48m, where it can lift 600kg. A hydraulic erection aid for the swing-away jib can be activated by remote control. On main boom alone it can lift 10.1t at a maximum height of 41m and 1.5t at full radius of 38m.

It has a single 270kW Liebherr engine, connected to the power shift gear, eddy current brake and clutch by data bus systems. Optional extras include supporting pressure indicators, work area limitation and the LiSSy diagnostic system.

Working up the range, Liebherr’s second new AT is the 200t, five-axle LTM 1200, being shown in prototype form. It features a 60m main boom with 12.2m to 36m extensions, lifting a maximum 2.1t at a height of 100m and 1t at a maximum 84m radius. On main boom alone, it can lift 16.5t at a height of 60m and 4.3t at a maximum radius of 56m.

This model takes over from the LTM 1160/2, but offers an average 25% better chart and 15% better reach, Liebherr says.

A 400kW engine powers the carrier and the upper has a 180kW unit. New data bus systems have been added to the entire travel gear management, the crane’s sensor technology and the telescoping movements.

The overall length of 15.2m, turning circle of 11.25m and counterweight radius of 4.8m make the LTM 1200/1 “the most compact crane in its class”, according to Liebherr.

For longer reach, Liebherr is launching the six-axle, 250t LTM 1250/1 with a six-section main boom that extends 72m, with maximum extensions of 63m. What it lifts out there has yet to be determined, however, as the chart is still being worked on. This crane features the same six-axle chassis of the 300t LTM 1300/1, giving it a 75t GVW without counterweight.

The upgrade from Liebherr is the five-axle, 150t LTM 1150/1, developed from the well-established 120t model LTM 1120/1. The key difference is that the 56m telescopic boom is now manufactured from high-tensile S 1100 QL structural steel. This, plus increasing the counterweight to 50t, has achieved an average increase in load capacity of 20%. At the largest working radii, the capacity increase is as much as 200%, Liebherr claims.

Another new feature is a 7m lattice extension to give a 91m height under the hook and a 72m working radius.

Liebherr is also showing the following established AT models: LTM 1030/2, LTM 1060/2, LTM 1080/1, LTM 1100/2, LTM 1300/1 and LTM 1500.

The new 600t-rated LR 1600/1 will be the biggest crawler crane at the show. It can be used both with a crawler-tracked chassis or on a static pedestal with swing-out supports. The static version provides up to 267% more load capacity than the mobile one, Liebherr says. It will be shown at Bauma in both versions simultaneously – crawler tracks on one side, swing-out supports on the other.

The LR 1600/1 features trailing counterweight with adjustable radii to increase the load capacity. The unit being shown (fully rigged and with trailing counterweight) was delivered to Riga Mainz in January and has already been out on site in Cologne. A further seven orders had been taken for this machine by the end of January.

Also new from Liebherr is the LR 1160, a 160t crawler with boom and jib lengths approaching 125m (55.1m + 69.8m). Liebherr says that the basic load on the hydraulics has been considerably reduced, so that engine power is put to better use and efficiency is improved. The LR 1160 is effectively an upgrade of last year’s 140t-capacity LR 1140. The LR 1160 gains its extra capacity from three additional counterweight pieces which should help it compete more effectively in the popular 180 US ton class in the USA.

Liebherr is also showing the first of a new generation of crane-based hydraulic rope excavators for foundation work.

Also being shown are various tower cranes including the MK 80 truck-mounted tower seen at Intermat last year.