Head to head
Hitachi ZX135USB-7 vs Hitachi ZX33U-6
The Hitachi ZX135USB-7 is the bigger machine by 10,480kg and has 55kW more power.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Hitachi ZX135USB-7 is the bigger machine by 10,480kg.
- Engine power: the Hitachi ZX135USB-7 has 55kW more power.
Specifications side by side
| Hitachi ZX135USB-7 | Hitachi ZX33U-6 | |
|---|---|---|
| Operating weight | 13,800 - 16,000kg | 3,320 - 3,720kg |
| Engine power | 74kW (ISO14396) / 73kW (ISO9249) | 18.8kW |
| Dig depth | - | 2,790 - 3,130mm |
Sources: Hitachi ZX135USB-7, Hitachi ZX33U-6. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the ZX135USB-7 if...
- you want one that is the bigger machine by 10,480kg
- you want one that has 55kW more power
Built for sites with tight working margins - roadside, urban and confined yards - where a swinging counterweight would foul walls, parked vehicles or passing traffic. Popular with utility and demolition contractors working close to structures.
Listed by
- McGovern Plant Hire - Hounslow, Cranford
Buy or hire the ZX33U-6 if...
A general-purpose mini digger for landscaping, utilities and small groundworks contractors who need to work in gardens, driveways and other access-restricted sites. Its zero tail swing lets it turn on the spot without swinging into fences or walls.
Listed by
- McGovern Plant Hire - Hounslow, Cranford
Common questions
What is the difference between the Hitachi ZX135USB-7 and the Hitachi ZX33U-6?
The Hitachi ZX135USB-7 is the bigger machine by 10,480kg and has 55kW more power. The Hitachi ZX135USB-7 is a 13 tonne zero tail swing crawler excavator; the Hitachi ZX33U-6 is a 3.3-3.7 tonne zero tail swing mini excavator.
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