Head to head
JCB 3CX Compact vs Komatsu D51PX
The Komatsu D51PX is the bigger machine by 8,110kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 8,110kg.
Specifications side by side
| JCB 3CX Compact | Komatsu D51PX | |
|---|---|---|
| Operating weight | 6070 kg | 14,180kg |
| Dig depth | 5 m | - |
| Engine power | 55 kW | - |
| Travel Speed | 40 kph | - |
| Class | - | 14 tonne |
Sources: JCB 3CX Compact, Komatsu D51PX. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the 3CX Compact if...
Aimed at utility, highways and town-centre work where a full-size backhoe will not fit. Used for trenching, loading and breaking out on narrow roads, estates and tight sites.
Full 3CX Compact specifications →Buy or hire the D51PX if...
- you want one that is the bigger machine by 8,110kg
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 3CX Compact and the Komatsu D51PX?
The Komatsu D51PX is the bigger machine by 8,110kg. The JCB 3CX Compact is a compact backhoe loader about 2 m wide; the Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class.
GetBrent is an independent directory and is not a dealer for, nor affiliated with, either manufacturer. Model and brand names are the trademarks of their owners.