Cat 330 vs Cat 345
The Cat 345 is the heavier machine, at 42.2 t against 31.4 t, and the Cat 345 has more power (258 kW against 193.8 kW).
The Cat 330 is ahead on: digs deeper, turns tighter, lower to transport. The Cat 345 is ahead on: more power, reaches further, dumps higher, bigger bucket or body, more digging or pushing force, more hydraulic flow, bigger fuel tank, narrower to transport.
Below, every figure both makers publish sits side by side, with the Cat 330 and the Cat 345 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 330 | Cat 345 |
|---|---|---|
| Operating weight | 31,400 kg | 42,200 kg |
| Net powerHigher is better | 193.8 kW | 258 kW+33% |
| Max digging depthHigher is better | 7.25 m+1% | 7.2 m |
| Max reach at ground levelHigher is better | 10.69 m | 11.29 m+6% |
| Max dumping heightHigher is better | 6.94 m | 7.21 m+4% |
| Bucket capacityHigher is better | 1.8 m³ | 2.41 m³+34% |
| Bucket digging forceHigher is better | 179 kN | 235 kN+31% |
| Pump flowHigher is better | 560 L/min | 630 L/min+13% |
| Fuel tankHigher is better | 474 L | 600 L+27% |
| Tail swing radiusLower is better | 3.13 m+11% | 3.53 m |
| Overall widthLower is better | 3.39 m | 3.34 m+1% |
| Overall height (to top of cab)Lower is better | 3.06 m+5% | 3.23 m |
| Overall length | 10.42 m | 11.62 m |
All specifications
Every figure the makers publish. Search for one, or show only those that differ.
Dimensions
Performance
Weight
Engine
Hydraulics
Service capacities
Service intervals
Undercarriage
Sources: Cat 330 Hydraulic Excavator (Tier 3) brochure AEXQ2461-05 (2024, build 07F) · Cat 345 Technical Specifications AEXQ4209-01 (12-2025, build 07H, Afr-ME / Aus-NZ / Eurasia / Indonesia / SE Asia) - all figures and the dimension drawing
Drawn to scale
Side views measured off each maker's dimension drawing, front edges and ground lined up.
Cat 330 vs Cat 345: questions
Which is bigger, the Cat 330 or Cat 345?
By operating weight the Cat 345 is the biggest at 42.2 t, then the Cat 330 at 31.4 t.
Which has more power, the Cat 330 or Cat 345?
The Cat 345: Cat 330 193.8 kW (260 hp), Cat 345 258 kW (346 hp) (net power), a 33% difference.
Which digs deeper, the Cat 330 or Cat 345?
The Cat 330: Cat 330 7.25 m, Cat 345 7.2 m (max digging depth), a 1% difference.
Which reaches further, the Cat 330 or Cat 345?
The Cat 345: Cat 330 10.69 m, Cat 345 11.29 m (max reach at ground level), a 6% difference.
Which has the bigger bucket, the Cat 330 or Cat 345?
The Cat 345: Cat 330 1.8 m³, Cat 345 2.41 m³ (bucket capacity), a 34% difference.
Which has the bigger fuel tank, the Cat 330 or Cat 345?
The Cat 345: Cat 330 474 L, Cat 345 600 L (fuel tank), a 27% difference.
Which turns tighter, the Cat 330 or Cat 345?
The Cat 330: Cat 330 3.13 m, Cat 345 3.53 m (tail swing radius), a 11% difference.
Which is narrower to transport, the Cat 330 or Cat 345?
The Cat 345: Cat 330 3.39 m, Cat 345 3.34 m (overall width), a 1% 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.
