Head to head
Komatsu D51PX vs Kubota U17-3a
The Komatsu D51PX is the bigger machine by 12,480kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 12,480kg.
Specifications side by side
| Komatsu D51PX | Kubota U17-3a | |
|---|---|---|
| Operating weight | 14,180kg | 1,700kg |
| Class | 14 tonne | - |
| Dig depth | - | 2,460mm |
| Engine power | - | 11.3kW |
Sources: Komatsu D51PX, Kubota U17-3a. 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 12,480kg
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 U17-3a if...
A step up from a micro excavator for landscaping and groundworks contractors who need more dig depth and breakout force while still fitting through a standard gate or gap. Common on garden and small drainage jobs.
Listed by
- McGovern Plant Hire - Hounslow, Cranford
- Compact Plant Sales - Farnham
- Beaver Tool Hire - Isleworth, Twickenham
- Standard Plant Hire - Keston
- HG Plant Sales - Maldon, Langford
Common questions
What is the difference between the Komatsu D51PX and the Kubota U17-3a?
The Komatsu D51PX is the bigger machine by 12,480kg. The Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class; the Kubota U17-3a is a 1.7 tonne mini excavator.
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