Head to head
Caterpillar 301.7 CR vs Thwaites 6 Tonne Power Swivel
The Thwaites 6 Tonne Power Swivel has 40kW more power.
Last reviewed 13 September 2026
Key differences
- Engine power: the Thwaites 6 Tonne Power Swivel has 40kW more power.
Specifications side by side
| Caterpillar 301.7 CR | Thwaites 6 Tonne Power Swivel | |
|---|---|---|
| Engine power | 15.7 kW (21 hp) | 55.4 kW (74 hp) @ 2200rpm |
| Operating weight | 1,915 kg (4,222 lb) | - |
| Dig depth | 2,540 mm (100 in) (long stick) | - |
| Payload | - | 6000 kg |
| Heaped capacity | - | 3150 litres |
| Engine | - | Deutz TCD 3.6 L4 |
Sources: Caterpillar 301.7 CR, Thwaites 6 Tonne Power Swivel. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the 301.7 CR if...
The Cat 301.7 CR is Caterpillar's roughly 2 tonne mini excavator, built around the Cat C1.1 engine and backed by Caterpillar's dealer network for parts and service. It is specified on UK sites for the same drainage, groundworks and utility jobs as the Kubota U27-4 and Takeuchi TB216, with buyers often citing Cat's residual values and dealer support over price. It is one of the smaller models in Caterpillar's wider mini excavator line-up, which extends up to around 10 tonnes.
Full 301.7 CR specifications →Buy or hire the 6 Tonne Power Swivel if...
- you want one that has 40kW 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 Caterpillar 301.7 CR and the Thwaites 6 Tonne Power Swivel?
The Thwaites 6 Tonne Power Swivel has 40kW more power. The Caterpillar 301.7 CR is a a sub-2 tonne conventional-tail-swing mini excavator; the Thwaites 6 Tonne Power Swivel is a 6 tonne power swivel site dumper.
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