Top performance in the quarry: The Liebherr R 992
L. Walter & Sons Excavating optimises its processes with the Liebherr crawler excavator R 992 Litronic
L. Walter & Sons Excavating, based in Ontario in southern Canada, is currently operating a rock quarry with particularly challenging working conditions, such as removing exceptionally heavy material (with a density of 2.2 tonnes/m3), large blocks and abrasive rock. The R 992 Litronic crawler excavator is specially designed for demanding operating environments. For L. Walter & Sons Excavating, the choice of this model was an obvious strategic decision.
Efficient peak performance for maximum productivity
The machine's main task is to load articulated mining trucks with an operating mass of 40 tonnes. She fills these in just three work steps. The exceptionally high working speed is testament to the performance and efficiency of this crawler excavator. It is also characterised by a breakout force that is among the best in its class. These features allow L. Walter & Sons Excavating to optimise its production processes and reduce waiting times and operating costs.
L. Walter & Sons Excavating was founded in 1965 and has been active in the industry for 60 years. The company has already purchased 60 machines from Liebherr. An impressive milestone.
"What convinced us was the combination of performance, speed and production quality. The R 992 Litronic fulfils all these points: It offers impressive performance, very short cycle times and a perfect design."
About the R 992 Litronic
The R 992 Litronic in use at L. Walter & Sons Excavating
The 6.2 generation of the R 992 Litronic crawler excavator has been designed for the most demanding environments in the mining industry. It offers noticeable improvements in fuel consumption and assistance functions. With an operating mass of 94 tonnes, the R 992 Litronic has proven itself to be a robust and powerful machine. In addition to its technical features, it has functionalities specially tailored to the operator and his safety: a spacious, comfortable and ergonomic operator's cab, two cameras for an optimum overview, a reinforced windscreen as standard and the new Bucket Fill Assist system, which improves the bucket filling rate and reduces cycle times.
In accordance with the operational requirements of L. Walter & Sons Excavating, the machine was equipped with a 7.20 metre boom and a 2.90 metre stick to ensure optimum reach with high stability during loading. With its filling quantity of 6.2 m3 and width of 2,300 mm, the bucket enables large volumes of rock to be picked up and, thanks to its semi-delta shape, ensures good penetration behaviour into the digging material. The bucket is equipped with Liebherr Z90 CL profile teeth, which are characterised by high wear resistance. To protect the machine from damage caused by blocks of rock, the R 992 Litronic has been fitted with special protective plates on the underside of the boom and stick.
The new generation of large Liebherr crawler excavators
The R 992 Litronic is part of the new product range of large Liebherr crawler excavators for demanding tasks, especially in mining, quarries and earthmoving work. This product range includes machines in the 70 to 100 tonne class with the models R 972, R 978 SME, R 992 and R 998 SME. They are characterised by a combination of powerful performance and hydraulic precision while offering maximum ease of use.
In addition to their impressive size, the crawler excavators are characterised by the integration of innovative technologies that improve productivity and profitability at the operating location. They feature the "Liebherr Power Efficiency - Engine Control" system, which adjusts engine parameters in real time to reduce fuel consumption without compromising performance. This technology enables companies operating in the sector not only to reduce operating costs, but also to meet increasing environmental requirements.
The cabs are equipped with intelligent assistance systems for comfortable and ergonomic working. They also provide an optimised field of vision and intuitive control elements for easy control of the machine. The Modetronic function enables the operator to adapt the behaviour of his excavator to his own habits and the task at hand, thus improving precision and flexibility in use.
