Head to head
Hitachi ZX75US-5 vs Komatsu D51PX
The Komatsu D51PX is the bigger machine by 5,450kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 5,450kg.
Specifications side by side
| Hitachi ZX75US-5 | Komatsu D51PX | |
|---|---|---|
| Operating weight | 8730kg (19,244lb) | 14,180kg |
| Engine power | 42.4kW (56.9hp) | - |
| Max digging depth | 4.61m (15'1") | - |
| Class | - | 14 tonne |
Sources: Hitachi ZX75US-5, Komatsu D51PX. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the ZX75US-5 if...
A 7-8 tonne excavator with a reduced tail swing radius, letting it work close to walls and in restricted urban sites. A common size in UK plant hire fleets for groundworks and drainage.
Listed by
- Red Plant Sales Ltd - Colchester, Frating
Buy or hire the D51PX if...
- you want one that is the bigger machine by 5,450kg
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 ZX75US-5 and the Komatsu D51PX?
The Komatsu D51PX is the bigger machine by 5,450kg. The Hitachi ZX75US-5 is a reduced tail swing excavator; the Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class.
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