Head to head
Caterpillar D6N vs Komatsu D51PX
The Caterpillar D6N is the bigger machine by 2,577kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Caterpillar D6N is the bigger machine by 2,577kg.
Specifications side by side
| Caterpillar D6N | Komatsu D51PX | |
|---|---|---|
| Operating weight | 16757kg (36,943lb) | 14,180kg |
| Engine power | 124kW (166hp) at 1800rpm | - |
| Blade capacity | 3.90m3 (LGP VPAT) to 4.30m3 (XL SU) | - |
| Engine | Cat C7.1 ACERT | - |
| Class | - | 14 tonne |
Sources: Caterpillar D6N, Komatsu D51PX. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the D6N if...
- you want one that is the bigger machine by 2,577kg
A mid-size dozer used for earthmoving, site clearance and haul road maintenance. The VPAT blade option lets one machine angle, tilt and pitch for grading as well as straight pushing.
Listed by
- B & T Plant Hire - Gravesend
- B & T Plant Hire Ltd - Morden
Buy or hire the D51PX if...
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
Common questions
What is the difference between the Caterpillar D6N and the Komatsu D51PX?
The Caterpillar D6N is the bigger machine by 2,577kg. The Caterpillar D6N is a medium crawler dozer; the Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class.
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