Head to head
JCB STH-2S5 Swivel vs Komatsu D51PX
The Komatsu D51PX is the bigger machine by 11,790kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 11,790kg.
Specifications side by side
| JCB STH-2S5 Swivel | Komatsu D51PX | |
|---|---|---|
| Operating weight | 2,390kg | 14,180kg |
| Skip capacity | 1,615 litres (heaped) | - |
| Engine power | 18.9kW | - |
| Class | - | 14 tonne |
Sources: JCB STH-2S5 Swivel, Komatsu D51PX. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the STH-2S5 Swivel if...
A compact swivel dumper for smaller groundworks and landscaping contractors who need to tip to the side without repositioning, popular on domestic extension and garden sites where access is tight.
Listed by
- McGovern Plant Hire - Hounslow, Cranford
Buy or hire the D51PX if...
- you want one that is the bigger machine by 11,790kg
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 STH-2S5 Swivel and the Komatsu D51PX?
The Komatsu D51PX is the bigger machine by 11,790kg. The JCB STH-2S5 Swivel is a 3 tonne swivel-skip site dumper; the Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class.
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