Head to head
Hitachi 33U vs Komatsu D51PX
The Komatsu D51PX is the bigger machine by 10,693kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 10,693kg.
Specifications side by side
| Hitachi 33U | Komatsu D51PX | |
|---|---|---|
| Operating weight | 3,487 kg | 14,180kg |
| Width | 1,550 mm | - |
| Rated power ISO 9249 | 21.2 kW (28.4 HP) at 2,400 min-1 (rpm) (net) | - |
| Fuel tank | 42.0 L | - |
| Class | - | 14 tonne |
Sources: Hitachi 33U, Komatsu D51PX. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the 33U if...
A compact tracked excavator from Hitachi's smaller size class, used for groundworks, drainage and landscaping jobs too tight for a larger machine. It is bought and sold through the used plant market rather than as a current Hitachi catalogue model.
Listed by
- Plant Sales Northern Ireland | P & A Plant Sales - Ballynahinch
Buy or hire the D51PX if...
- you want one that is the bigger machine by 10,693kg
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 Hitachi 33U and the Komatsu D51PX?
The Komatsu D51PX is the bigger machine by 10,693kg. The Hitachi 33U is a mini excavator, approximately 3 tonne class; the Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class.
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