Head to head
Caterpillar D6K2 vs Hitachi ZX220W-7
The Caterpillar D6K2 is a medium crawler dozer. The Hitachi ZX220W-7 is a 20-25 tonne wheeled excavator, the largest in hitachi's zx-7 wheeled range.
Last reviewed 13 September 2026
Specifications side by side
| Caterpillar D6K2 | Hitachi ZX220W-7 | |
|---|---|---|
| Operating weight | 29,258lb (XL) / 30,664lb (LGP) | 20,100 - 24,900kg |
| Net power | Cat C4.4, 130hp | - |
| Blade capacity | 4.26yd3 (XL) / 4.98yd3 (LGP) | - |
| Dig depth | - | 5,810 - 6,300mm |
| Engine power | - | 128kW |
Sources: Caterpillar D6K2, Hitachi ZX220W-7. 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 ZX220W-7 if...
Targets larger utility, sewer and civils contractors who need crawler-class digging power on a road-going wheeled chassis. It sits at the top of Hitachi's current wheeled-excavator line, giving extra reach and depth over the 170W and 145W.
Listed by
- McGovern Plant Hire - Hounslow, Cranford
Common questions
What is the difference between the Caterpillar D6K2 and the Hitachi ZX220W-7?
The Caterpillar D6K2 is a medium crawler dozer; the Hitachi ZX220W-7 is a 20-25 tonne wheeled excavator, the largest in Hitachi's ZX-7 wheeled range.
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