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Liebherr shows three machines at NDA's first Live DEMOlition event

The Liebherr L 550 wheel loader.
The Liebherr L 550 wheel loader.

Liebherr USA, Co. Construction Equipment division served as the official sponsor of National Demolition Association's first Live DEMOlition event at the Demolition Austin 2018 trade show, held February 22-24, 2018 at the Austin Convention Center and Texas Disposal Systems. The Construction Equipment division showcased three machines: an R 936 Demolition Excavator, an LH 30 M Material Handler and an L 550 XPower Tier 4 Final Wheel Loader.

The Liebherr R 936 Demolition Excavator is the ideal machine for any of your ground level demolition needs. The Heavy Duty Straight Boom is a one piece boom with casting in all high stress areas to reduce the risk of failure in heavy demolition applications. Liebherr designed and manufactured the Straight Boom to provide further reach than the typical Gooseneck Boom.

The large diameter electro plated hydraulic pipes on its boom and stick ensures the fastest and most efficient way to get the oil to the tool, which produces faster working cycles for any hydraulic tool. For added machine protection, the R 936 has guarding to protect objects from damaging the underbelly of the upper carriage and undercarriage during demolition. At the Live DEMOlition event, participants will see firsthand the importance of the additional guarding and that it adds approximately four inches of added protection. The machine also features a bucket cylinder protection that completely protects the cylinder rod in all working positions. The adjustable front guard not only protects the operators but makes it easy to clean the windshield because it swings outward.

To effortlessly service the machine, the R 936 has an Automatic Central Lubrication system that periodically lubricates the pins and bushing of the entire upper carriage, boom and stick. The frequency of the lubrication can be set by using the touch screen in the cab. Additionally, the cooling package is designed side by side to shield excess material from building up during operation and the AC condenser swings out of the way by turning a knob, which means no tools are required to use this feature. The R 936 also features a reversible fan drive that can be set on a timer or activated manually whenever it is needed.

The innovative Liebherr-XPower driveline considerably increases working efficiency. Quick working cycles, high tipping loads and high machine uptime lead to increased handling capacity and higher productivity. This exponential driveline paired with Liebherr-Power-Efficiency (LPE) achieves a reduction in fuel consumption of up to 30% when compared to conventional travel gears. At highest efficiency, this reduces operating costs and increases profitability. The Liebherr-XPower driveline brakes automatically and the service brake only acts as a support and is therefore subject to hardly any wear.

Wheel spin on the Liebherr L 550 wheel loader is prevented through continuous tractive effort control of the XPower driveline, combined with automatic self-locking differentials. In addition, productivity is increased and tire wear reduced by up to 25%.

The Liebherr L 550 XPower wheel loader shown at Demolition 2018 features the full guarding package offered by Liebherr, which protects vital areas from the underbelly of the machine to the tilt cylinder, windshield and lighting. The loader features a particle protection and air pre-cleaner; this combined with the optimal placement of the cooling package prevents debris contamination in the cooling components. The unit is also equipped with a High-Dump bucket and solid tires, to provide a complete package ready for any demolition environment.

A top-notch feature you will have to see to believe is the safe and easy engine accessibility on the Liebherr L 550 XPower. Daily checkpoints and critical maintenance points on the loader can be reached quickly and effectively, providing faster turnarounds and higher uptimes.

The cab design is optimally adapted to the operator's day-to-day requirements. The roomy and ergonomic operator's cab offers perfect conditions for comfortable and productive work. The operating and control instruments are well laid out and user-friendly. All operation-relevant data can be viewed quickly and efficiently. The high operating comfort allows the operator to work efficiently and safely.

The LH 30 M material handler will impress operators by its versatility in various types of applications, such as scrap handling or sorting operations. The configuration includes a straight boom measuring 25 ft. 7 in. in length and a 19 ft. 8 in. long industrial stick, as well as a Liebherr 0.78 yd³ five tine grapple. Other elements of the machine configuration are the hydraulic cab elevation as well as the 4-point outrigger with individual control. The reversible fan and the large-mesh radiator provide a reliable, sealed unit in the engine compartment for machine operation in environments with heavy dust.

The LH 30 M material handler has a 4-cylinder inline diesel engine from Liebherr, which complies with emissions standard IV / Tier 4f. Compared with the previous model, it returns 140kW / 190HP as opposed to 129kW / 175HP on the previous series.

The increase in engine output means that the system has more torque available for more powerful movements. Furthermore, load peaks are compensated intelligently, meaning maximum torque is available at all times for maximum handling capacity. In combination with the greater pump delivery volume and the closed slewing circuit, maximum acceleration and the highest level of speed in the working movements are guaranteed. The new LH 30 M combines intelligent electronics with sensitive hydraulics and ensures precise and finely-controlled work with fast and powerful movements at the same time. The expertly conceived machine control guarantees optimal adaptation of the hydraulics to the respective use. Speed and power are available whenever they are needed.
 
Liebherr relies on state-of-the-art engine technology with intelligent machine controls that optimize the interplay of the drive components in terms of their degree of efficiency. Liebherr-Power Efficiency (LPE) enables machine operation in the area of the lowest specific fuel use for reduced consumption and greater efficiency with maximum performance. The engine speed was adjusted to 1,700 rpm, which optimizes the operating point. Moreover, the enclosed slewing mechanism circuit feeds the braking power back into the system during slowing of the upper carriage.

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