Head to head
Komatsu D51PX vs Kubota U36-4
The Komatsu D51PX is the bigger machine by 10,425kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 10,425kg.
Specifications side by side
| Komatsu D51PX | Kubota U36-4 | |
|---|---|---|
| Operating weight | 14,180kg | 3755 kg |
| Class | 14 tonne | - |
| Dig depth | - | 3410 mm |
| Width | - | 1700 mm |
| Engine power | - | 17.8 kw |
Sources: Komatsu D51PX, Kubota U36-4. 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 10,425kg
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 U36-4 if...
A zero-tail swing digger for builders, utility firms and hire fleets working beside walls, fences and live traffic. Common for trenching, foundations and drainage on urban sites.
Full U36-4 specifications →Common questions
What is the difference between the Komatsu D51PX and the Kubota U36-4?
The Komatsu D51PX is the bigger machine by 10,425kg. The Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class; the Kubota U36-4 is a 3.5 tonne zero-tail swing compact excavator.
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