Head to head
JCB 25Z-1 vs Komatsu D51PX
The Komatsu D51PX is the bigger machine by 11,630kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 11,630kg.
Specifications side by side
| JCB 25Z-1 | Komatsu D51PX | |
|---|---|---|
| Operating weight | 2550 kg | 14,180kg |
| Dig depth | 2.82 m | - |
| Dump height | 3 m | - |
| Engine power | 18.4 kW | - |
| Class | - | 14 tonne |
Sources: JCB 25Z-1, Komatsu D51PX. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the 25Z-1 if...
Used by hire firms and small contractors for patios, drainage, footings and work next to walls and fences where a zero-tailswing machine is needed. Sits in the weight class that can be towed on a trailer in restricted regions.
Full 25Z-1 specifications →Buy or hire the D51PX if...
- you want one that is the bigger machine by 11,630kg
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 25Z-1 and the Komatsu D51PX?
The Komatsu D51PX is the bigger machine by 11,630kg. The JCB 25Z-1 is a 2.5 tonne zero-tailswing mini excavator; 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.