Crawler excavators – Liebherr LR 634 Litronic User Manual
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1
Crawler Excavators
Liebherr tunnel excavators are special machines which
can be used in all conventional types of tunnelling ap-
plications: In order to create cross-tunnels after tunnel
drilling machines have been used, for secondary profil-
ing when explosives are being used and, of course, for
direct excavator tunneling. Particular features of these
machines are their economic operation, high perfor-
mance, and reliability.
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