Head to head
JCB 25Z-1 vs Thwaites 6 Tonne Power Swivel
The Thwaites 6 Tonne Power Swivel has 37kW more power.
Last reviewed 13 September 2026
Key differences
- Engine power: the Thwaites 6 Tonne Power Swivel has 37kW more power.
Specifications side by side
| JCB 25Z-1 | Thwaites 6 Tonne Power Swivel | |
|---|---|---|
| Engine power | 18.4 kW | 55.4 kW (74 hp) @ 2200rpm |
| Operating weight | 2550 kg | - |
| Dig depth | 2.82 m | - |
| Dump height | 3 m | - |
| Payload | - | 6000 kg |
| Heaped capacity | - | 3150 litres |
| Engine | - | Deutz TCD 3.6 L4 |
Sources: JCB 25Z-1, Thwaites 6 Tonne Power Swivel. 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 6 Tonne Power Swivel if...
- you want one that has 37kW more power
A 6 tonne dumper whose skip swivels so it can tip to either side, useful for loading into trenches and working along narrow roads or site edges. Used by groundworks and utility contractors on UK sites. A cab is listed as an option.
Full 6 Tonne Power Swivel specifications →Common questions
What is the difference between the JCB 25Z-1 and the Thwaites 6 Tonne Power Swivel?
The Thwaites 6 Tonne Power Swivel has 37kW more power. The JCB 25Z-1 is a 2.5 tonne zero-tailswing mini excavator; the Thwaites 6 Tonne Power Swivel is a 6 tonne power swivel site dumper.
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