Cat D6 vs Cat D8
The Cat D8 is the heavier machine, at 39 t against 22.1 t, and the Cat D8 has more power (271 kW against 161 kW).
The Cat D6 is ahead on: faster, narrower to transport. The Cat D8 is ahead on: more power, digs deeper, bigger bucket or body, more digging or pushing force, more hydraulic flow, bigger fuel tank.
Below, every figure both makers publish sits side by side, with the Cat D6 and the Cat D8 drawn to the same scale from their dimension drawings.
At a glance
Bold is the machine ahead on each figure, with its lead.
| Figure | Cat D6 | Cat D8 |
|---|---|---|
| Operating weight | 22,130 kg | 39,000 kg |
| Net powerHigher is better | 161 kW | 271 kW+68% |
| Digging depthHigher is better | 0.502 m | 0.576 m+15% |
| Blade capacityHigher is better | 5.7 m³ | 10.3 m³+81% |
| Maximum drawbar pullHigher is better | 422 kN | 642 kN+52% |
| Pump flowHigher is better | 204 L/min | 259 L/min+27% |
| Fuel tankHigher is better | 341 L | 624 L+83% |
| Travel speed, forward (max)Higher is better | 10.7 km/h+4% | 10.3 km/h |
| Width over tracksLower is better | 2.54 m+9% | 2.79 m |
All specifications
Every figure the makers publish. Search for one, or show only those that differ.
Dimensions
Weight
Performance
Engine
Transmission
Undercarriage
Hydraulics
Service capacities
Service intervals
Ripper
Sources: Cat D6 Track-Type Tractors Technical Specifications AEXQ3981-00 (10-2024), build 20C (Aus-NZ, S Am) · Cat D8 Track-Type Tractor Technical Specifications AEXQ3722 (05-2024), build 22A (AME excl. Saudi Arabia, ANZ, China, S Am)
Drawn to scale
Side views measured off each maker's dimension drawing, front edges and ground lined up.
Cat D6 vs Cat D8: questions
Which is bigger, the Cat D6 or Cat D8?
By operating weight the Cat D8 is the biggest at 39 t, then the Cat D6 at 22.1 t.
Which has more power, the Cat D6 or Cat D8?
The Cat D8: Cat D6 161 kW (215 hp), Cat D8 271 kW (363 hp) (net power), a 68% difference.
Which digs deeper, the Cat D6 or Cat D8?
The Cat D8: Cat D6 0.502 m, Cat D8 0.576 m (digging depth), a 15% difference.
Which has the bigger bucket, the Cat D6 or Cat D8?
The Cat D8: Cat D6 5.7 m³, Cat D8 10.3 m³ (blade capacity), a 81% difference.
Which has the bigger fuel tank, the Cat D6 or Cat D8?
The Cat D8: Cat D6 341 L, Cat D8 624 L (fuel tank), a 83% difference.
Which is narrower to transport, the Cat D6 or Cat D8?
The Cat D6: Cat D6 2.54 m, Cat D8 2.79 m (width over tracks), a 9% difference.
Where do these figures come from?
Each model's own published spec sheet or brochure, linked under the table. Builds differ by market and year, so confirm the figures for a particular machine with its dealer.
Can I rent or buy these machines in the UAE?
Each model's page lists the ones for hire and for sale on EquipmentsFinder now, with typical prices in AED.
