Head to head
Hitachi ZX145W-6 vs Komatsu D51PX
The Hitachi ZX145W-6 is a 14-17 tonne wheeled excavator. The Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class.
Last reviewed 13 September 2026
Specifications side by side
| Hitachi ZX145W-6 | Komatsu D51PX | |
|---|---|---|
| Operating weight | 15,000 - 17,200kg | 14,180kg |
| Dig depth | 5,520 - 5,770mm | - |
| Engine power | 105kW (ISO14396) | - |
| Class | - | 14 tonne |
Sources: Hitachi ZX145W-6, Komatsu D51PX. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the ZX145W-6 if...
Suits municipal and utility contractors who need a mobile, road-going digger for drainage and reinstatement work spread across several sites in a day. The wheeled undercarriage trades some stability for speed between jobs.
Listed by
- McGovern Plant Hire - Hounslow, Cranford
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
Common questions
What is the difference between the Hitachi ZX145W-6 and the Komatsu D51PX?
The Hitachi ZX145W-6 is a 14-17 tonne wheeled excavator; the Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class.
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