40,506 kg354 hp9.4 m³ blade80.3 kPaMedian — · 0 listed · 0 below
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The Komatsu D155 is a very large crawler bulldozer in the 38–41-tonne class, developed since 1995. It delivers 354 hp from a Komatsu SAA6D140E-7 engine and moves up to 9.7 m³ per pass with a semi-U blade. The D155AX-8 variant adds Komatsu's intelligent Machine Control (iMC) technology, which automatically controls blade lift and tilt to maintain a pre-set design grade.
The D155 is used on large earthmoving contracts: motorway interchange construction, embankment formation, large-scale quarry stripping, and dam or flood-defence core material placement. In Germany, it appears on Autobahn A-class projects with mass earthmoving targets in the millions of cubic metres. Belgian and Dutch port expansion projects use it for sand and clay placement on new industrial estates. Low-loader transport is required; mobilisation costs must be included in project budgets.
At 39,500 kg, this machine places extreme demands on its undercarriage. A full undercarriage replacement costs €35,000–€55,000 depending on specification. Obtain an independent undercarriage measurement report from a Komatsu dealer before purchase. Inspect the main frame for field welding indicating prior cracking. Check for smooth shifts through all transmission ranges under load and review transmission fault codes in the ECM history.
The D155 competes primarily with the Caterpillar D8T at this size class. Both platforms have global parts support. German contractor-grade machines from 2015–2022 command premium prices but supply is thin. Buyers in the DACH region typically source machines from contractor dispersal sales. Prices were broadly stable in 2025, with iMC-equipped machines attracting a 15–20% premium over conventional variants.
Median ask shown as delta against the class median (€0).
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