Head to head
Caterpillar D3 vs Thwaites 6 Tonne Power Swivel
The Caterpillar D3 has 22kW more power.
Last reviewed 13 September 2026
Key differences
- Engine power: the Caterpillar D3 has 22kW more power.
Specifications side by side
| Caterpillar D3 | Thwaites 6 Tonne Power Swivel | |
|---|---|---|
| Engine power | 77.6kW (104hp) | 55.4 kW (74 hp) @ 2200rpm |
| Engine | Cat C3.6 | Deutz TCD 3.6 L4 |
| Operating weight | 9362kg (20,640lb) | - |
| Blade capacity | 2.19m3, or 2.34m3 with LGP tracks | - |
| Payload | - | 6000 kg |
| Heaped capacity | - | 3150 litres |
Sources: Caterpillar D3, Thwaites 6 Tonne Power Swivel. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the D3 if...
- you want one that has 22kW more power
Caterpillar's smallest crawler dozer, used for fine grading, landscaping and confined-site work where a full-size dozer won't fit. Common in UK plant hire fleets alongside mini excavators.
Listed by
- B & T Plant Hire - Gravesend
- B & T Plant Hire Ltd - Morden
Buy or hire the 6 Tonne Power Swivel if...
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 Caterpillar D3 and the Thwaites 6 Tonne Power Swivel?
The Caterpillar D3 has 22kW more power. The Caterpillar D3 is a small crawler dozer; the Thwaites 6 Tonne Power Swivel is a 6 tonne power swivel site dumper.
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