Head to head
Caterpillar D4K2 vs Hitachi ZX33U-6
The Caterpillar D4K2 has 50kW more power.
Last reviewed 13 September 2026
Key differences
- Engine power: the Caterpillar D4K2 has 50kW more power.
Specifications side by side
| Caterpillar D4K2 | Hitachi ZX33U-6 | |
|---|---|---|
| Operating weight | 8,168kg (XL) / 8,476kg (LGP) | 3,320 - 3,720kg |
| Engine power | 92hp (68.8kW), Cat C4.4 ACERT | 18.8kW |
| Blade capacity | 1.98m3 (XL) / 1.85m3 (LGP) | - |
| Ground pressure | 38.6kPa (XL) / 29.2kPa (LGP) | - |
| Dig depth | - | 2,790 - 3,130mm |
Sources: Caterpillar D4K2, Hitachi ZX33U-6. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the D4K2 if...
- you want one that has 50kW more power
Cat's smallest crawler dozer, used for grading, site clearance and landscaping where a larger machine would be too heavy or too wide. The LGP undercarriage option suits soft or wet ground.
Listed by
- B & T Plant Hire - Gravesend
- B & T Plant Hire Ltd - Morden
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 Caterpillar D4K2 and the Hitachi ZX33U-6?
The Caterpillar D4K2 has 50kW more power. The Caterpillar D4K2 is a small crawler dozer; the Hitachi ZX33U-6 is a 3.3-3.7 tonne zero tail swing mini excavator.
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