Head to head
JCB 6ST-2S5 Swivel vs Komatsu D51PX
The Komatsu D51PX is the bigger machine by 9,340kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 9,340kg.
Specifications side by side
| JCB 6ST-2S5 Swivel | Komatsu D51PX | |
|---|---|---|
| Operating weight | 4,840kg | 14,180kg |
| Skip capacity | 3,191 litres (heaped) | - |
| Class | - | 14 tonne |
Sources: JCB 6ST-2S5 Swivel, Komatsu D51PX. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the 6ST-2S5 Swivel if...
Suits groundworkers who need to tip to the side or rear without turning the whole machine, useful in trenches or narrow access where reversing to line up a straight-tip skip is awkward. The 6 tonne capacity sits in the middle of JCB's swivel dumper range.
Listed by
- McGovern Plant Hire - Hounslow, Cranford
Buy or hire the D51PX if...
- you want one that is the bigger machine by 9,340kg
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 JCB 6ST-2S5 Swivel and the Komatsu D51PX?
The Komatsu D51PX is the bigger machine by 9,340kg. The JCB 6ST-2S5 Swivel is a 6 tonne swivel-skip site dumper; the Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class.
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