Head to head
Komatsu D51PX vs Niftylift HR15 4x4
The Komatsu D51PX is the bigger machine by 9,680kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 9,680kg.
Specifications side by side
| Komatsu D51PX | Niftylift HR15 4x4 | |
|---|---|---|
| Operating weight | 14,180kg | 4,500kg diesel, 4,800kg hybrid, stated as minimum |
| Class | 14 tonne | - |
| Working height | - | 15.7m (51ft 6in) |
| Working outreach | - | 9.4m (31ft) |
| Platform capacity | - | 225kg |
Sources: Komatsu D51PX, Niftylift HR15 4x4. 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 9,680kg
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 HR15 4x4 if...
A British-built boom lift favoured by hire fleets for its narrow 2m width and tight turning circle, which let it reach working heights that normally require a much larger machine on a more constrained site. The flexible boom design allows working up and over obstacles.
Full HR15 4x4 specifications →Common questions
What is the difference between the Komatsu D51PX and the Niftylift HR15 4x4?
The Komatsu D51PX is the bigger machine by 9,680kg. The Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class; the Niftylift HR15 4x4 is a self-propelled articulating boom lift.
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