Head to head
Develon DX17Z-7 vs Komatsu D51PX
The Komatsu D51PX is the bigger machine by 12,270kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 12,270kg.
Specifications side by side
| Develon DX17Z-7 | Komatsu D51PX | |
|---|---|---|
| Operating weight | 1,910 kg (4,211 lb) | 14,180kg |
| Dig depth | 2,200 mm (7 ft 3 in) | - |
| Engine power | 11.9 kW (16.0 hp) at 2,400 rpm | - |
| Class | - | 14 tonne |
Sources: Develon DX17Z-7, Komatsu D51PX. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the DX17Z-7 if...
The Develon DX17Z-7 is the smallest excavator in the Develon range, formerly sold as a Doosan model before the 2023 rebrand, and competes for the same confined-space and landscaping hire jobs as the JCB 8008 CTS and Kubota KX019-4. UK dealers that previously stocked it as a Doosan now sell and service it under the Develon name with the same parts and support lines. It gives hire companies a mini excavator option outside the usual Kubota, JCB and Takeuchi trio at a similar size point.
Full DX17Z-7 specifications →Buy or hire the D51PX if...
- you want one that is the bigger machine by 12,270kg
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 Develon DX17Z-7 and the Komatsu D51PX?
The Komatsu D51PX is the bigger machine by 12,270kg. The Develon DX17Z-7 is a a 1.7 tonne mini excavator, Develon's smallest excavator model; the Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class.
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