Head to head
Komatsu D51PX vs Kubota KX71-3
The Komatsu D51PX is the bigger machine by 7,630kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 7,630kg.
Specifications side by side
| Komatsu D51PX | Kubota KX71-3 | |
|---|---|---|
| Operating weight | 14,180kg | approx. 6,550lb (2,970kg) |
| Class | 14 tonne | - |
| Length | - | 14ft 11in |
| Width | - | 4ft 11in |
Sources: Komatsu D51PX, Kubota KX71-3. 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 7,630kg
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 KX71-3 if...
A sub-3 tonne mini excavator for small groundworks, drainage and garden digging jobs. It is a size class widely hired by landscapers and general builders for work too small to justify a larger machine.
Listed by
- Red Plant Sales Ltd - Colchester, Frating
Common questions
What is the difference between the Komatsu D51PX and the Kubota KX71-3?
The Komatsu D51PX is the bigger machine by 7,630kg. The Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class; the Kubota KX71-3 is a mini excavator.
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