Head to head
Komatsu D51PX vs Kubota KX030-4
The Komatsu D51PX is the bigger machine by 11,390kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 11,390kg.
Specifications side by side
| Komatsu D51PX | Kubota KX030-4 | |
|---|---|---|
| Operating weight | 14,180kg | 2790 kg |
| Class | 14 tonne | - |
| Dig depth | - | 2870 mm |
| Width | - | 1500 mm |
| Engine power | - | 17.7 kw |
Sources: Komatsu D51PX, Kubota KX030-4. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the D51PX if...
- you want one that is the bigger machine by 11,390kg
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 KX030-4 if...
A 3 tonne class digger for hire fleets, groundworkers and landscapers on trenching, drainage and foundation work in confined spaces. The reduced overhang helps on tight sites.
Full KX030-4 specifications →Common questions
What is the difference between the Komatsu D51PX and the Kubota KX030-4?
The Komatsu D51PX is the bigger machine by 11,390kg. The Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class; the Kubota KX030-4 is a 2.8 tonne class mini excavator.
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