Head to head
Caterpillar 301.7 CR vs Komatsu D51PX
The Komatsu D51PX is the bigger machine by 12,265kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 12,265kg.
Specifications side by side
| Caterpillar 301.7 CR | Komatsu D51PX | |
|---|---|---|
| Operating weight | 1,915 kg (4,222 lb) | 14,180kg |
| Dig depth | 2,540 mm (100 in) (long stick) | - |
| Engine power | 15.7 kW (21 hp) | - |
| Class | - | 14 tonne |
Sources: Caterpillar 301.7 CR, Komatsu D51PX. 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 D51PX if...
- you want one that is the bigger machine by 12,265kg
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 Caterpillar 301.7 CR and the Komatsu D51PX?
The Komatsu D51PX is the bigger machine by 12,265kg. The Caterpillar 301.7 CR is a a sub-2 tonne conventional-tail-swing 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.