Liebherr has introduced a new range of crawler excavators of the 5.2 and 6.2 generations, weighing between 70 and 100 tonnes. The new Liebherr crawler excavators R 972, R 978 SME, R 992 and R 998 SME replace the R 966, R 970 SME, R 976 and R 980 SME models.
The new crawler excavators were developed with the aim of reducing overall energy consumption, something achieved with the Liebherr Power Efficiency (PE) Engine Control system.
This innovation allows a 10-15 per cent reduction in fuel consumption compared to previous models.
The new excavator range is available with the Bucket Fill Assist function. This assistance system has an “anti-stalling” mode that prevents the bucket from jamming when penetrating digging material.
The assist function also enables semi-automatic bucket filling, providing an automated and faster cycle. In addition to reducing fuel consumption by 10 per cent, the Liebherr Bucket Fill Assist system also reduces vibrations, improving operator comfort.
The machines also benefit from increased engine power. The R 992, which replaces the R 976, guarantees five per cent more engine power. The R 998 SME, with an operating weight of more than 100 tonnes, gets a new chassis with larger dimensions. The models thus gain stability and are ideally suited for demanding working environments, such as quarrying and mining.
For more information, visit the Liebherr website.