Head to head
Caterpillar D6K2 vs Hitachi ZX33U-6
The Caterpillar D6K2 is a medium crawler dozer. The Hitachi ZX33U-6 is a 3.3-3.7 tonne zero tail swing mini excavator.
Last reviewed 13 September 2026
Specifications side by side
| Caterpillar D6K2 | Hitachi ZX33U-6 | |
|---|---|---|
| Operating weight | 29,258lb (XL) / 30,664lb (LGP) | 3,320 - 3,720kg |
| Net power | Cat C4.4, 130hp | - |
| Blade capacity | 4.26yd3 (XL) / 4.98yd3 (LGP) | - |
| Dig depth | - | 2,790 - 3,130mm |
| Engine power | - | 18.8kW |
Sources: Caterpillar D6K2, Hitachi ZX33U-6. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the D6K2 if...
A medium dozer for site grading, cut-and-fill and light earthmoving where a full-size dozer would be overkill. It is hired by groundworks and landscaping contractors needing precise grading as much as raw pushing power.
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 D6K2 and the Hitachi ZX33U-6?
The Caterpillar D6K2 is a medium crawler dozer; the Hitachi ZX33U-6 is a 3.3-3.7 tonne zero tail swing mini excavator.
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