Head to head
Komatsu D51PX vs Liebherr L556 XPower
The Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class. The Liebherr L556 XPower is a large wheel loader with xpower power-split driveline.
Last reviewed 13 September 2026
Specifications side by side
| Komatsu D51PX | Liebherr L556 XPower | |
|---|---|---|
| Operating weight | 14,180kg | 19,600 - 21,600 kg |
| Class | 14 tonne | - |
| Tipping load | - | 9,300 - 13,750 kg |
| Bucket capacity | - | 2.80 - 10.00 m3 |
| Rated output ISO 14396 / ECE-R.120 | - | 183 kW / 249 HP |
Sources: Komatsu D51PX, Liebherr L556 XPower. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the D51PX if...
A mid-size dozer built with wider, low ground pressure tracks for soft or wet ground. Groundworks and landfill contractors choose the PX variant over a standard-track D51 where the ground itself would otherwise bog a machine down.
Listed by
- B & T Plant Hire - Gravesend
- B & T Plant Hire Ltd - Morden
Buy or hire the L556 XPower if...
A large wheel loader for quarry and bulk material handling work. Liebherr's XPower driveline splits power between hydrostatic and mechanical drive to cut fuel use on repetitive load-and-carry cycles.
Listed by
- ChapmanPlant - Bristol, Iron Acton
Common questions
What is the difference between the Komatsu D51PX and the Liebherr L556 XPower?
The Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class; the Liebherr L556 XPower is a large wheel loader with XPower power-split driveline.
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