Head to head
Komatsu D51PX vs Mecalac 6MCR
The Komatsu D51PX is the bigger machine by 8,480kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 8,480kg.
Specifications side by side
| Komatsu D51PX | Mecalac 6MCR | |
|---|---|---|
| Operating weight | 14,180kg | 5700 kg (12,600 lb) / 6100 kg (13,500 lb) |
| Class | 14 tonne | - |
| Engine power | - | 55,4 kW |
| Tail swing radius | - | 1170 mm |
| Travel speed | - | 10 km/h |
Sources: Komatsu D51PX, Mecalac 6MCR. 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 8,480kg
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 6MCR if...
A compact crawler excavator for utility trenching, landscaping and work between buildings where a 2 tonne class footprint is needed with 6 tonne digging performance. Used by groundworks and utility contractors on tight UK sites.
Full 6MCR specifications →Common questions
What is the difference between the Komatsu D51PX and the Mecalac 6MCR?
The Komatsu D51PX is the bigger machine by 8,480kg. The Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class; the Mecalac 6MCR is a 6 tonne crawler skid-excavator with compact tail swing.
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