On-Site Magazine

Liebherr tunnel crawler excavator

By Adam Freill   

Construction Equipment

The swivel bearing on the R 930 Tunnel attachment allows the excavation profile to be followed. (Photo courtesy of Liebherr Group)

Specially designed for underground construction sites, the Liebherr tunnel excavator range was recently expanded with the new R 930 Tunnel crawler excavator, which replaces the R 924 Compact Tunnel to provide high-level performance in all types of underground applications.

Built to handle the demands of underground construction sites, which often present tight spaces with difficult access, the machine’s attachment is available in two lengths and features a bearing that can swivel to 2 x 45° angles, allowing the excavation profile to be followed. The machine’s short slewing radius and powerful, protected LED headlights are engineered to reduce the risks of collision with construction site personnel and walls.

In addition, the cylinders and hoses are specially positioned for maximum protection from potential impacts, thus limiting damage to them. The R 930 has steel bodywork, making it a very robust machine, ideal for underground applications. It can be equipped with the Liebherr quick coupling system, which allows tools to be changed easily and quickly.

Attachments options include a Liebherr two- or three-tooth ripper bucket as well as a cutter or hammer to cover a broad area of applications. The machine’s grading blade allows the creation of a flat ground surface and helps stabilize the machine on uneven ground. It also protects the undercarriage and crawler drives against impacts from rubble.

The whole ROPS-, FOPS- and FGPS-certified operator’s cab, along with its rear and side monitoring cameras, are designed with site safety in mind. The cab also has protection for its electronic components and has been crafted to be comfortable and ergonomic.




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