Cat 345 vs Komatsu PC400
The Cat 345 is the heavier machine, at 42.2 t against 41.7 t, and the Cat 345 has more power (258 kW against 257 kW).
The Cat 345 is ahead on: more power, bigger bucket or body, turns tighter, narrower to transport, lower to transport. The Komatsu PC400 is ahead on: digs deeper, reaches further, dumps higher, more digging or pushing force, more hydraulic flow, bigger fuel tank.
Below, every figure both makers publish sits side by side, with the Cat 345 and the Komatsu PC400 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 345 | Komatsu PC400 |
|---|---|---|
| Operating weight | 42,200 kg | 41,740 kg |
| Net powerHigher is better | 258 kW | 257 kW |
| Max digging depthHigher is better | 7.2 m | 7.82 m+9% |
| Max reach at ground levelHigher is better | 11.29 m | 11.82 m+5% |
| Max dumping heightHigher is better | 7.21 m | 7.565 m+5% |
| Bucket capacityHigher is better | 2.41 m³+27% | 1.9 m³ |
| Bucket digging forceHigher is better | 235 kN | 275 kN+17% |
| Pump flowHigher is better | 630 L/min | 690 L/min+10% |
| Fuel tankHigher is better | 600 L | 650 L+8% |
| Tail swing radiusLower is better | 3.53 m+3% | 3.645 m |
| Overall widthLower is better | 3.34 m+3% | 3.43 m |
| Overall height (to top of cab)Lower is better | 3.23 m+2% | 3.285 m |
| Overall length | 11.62 m | 11.94 m |
All specifications
Every figure the makers publish. Search for one, or show only those that differ.
Dimensions
Performance
Weight
Engine
Hydraulics
Undercarriage
Service capacities
Service intervals
Digging
Swing, travel and hydraulics
Sources: Cat 345 Technical Specifications AEXQ4209-01 (12-2025, build 07H, Afr-ME / Aus-NZ / Eurasia / Indonesia / SE Asia) - all figures and the dimension drawing · Komatsu PC400-8R brochure CEN00273-05 (Komatsu Middle East)
Drawn to scale
Side views measured off each maker's dimension drawing, front edges and ground lined up.
Cat 345 vs Komatsu PC400: questions
Which is bigger, the Cat 345 or Komatsu PC400?
By operating weight the Cat 345 is the biggest at 42.2 t, then the Komatsu PC400 at 41.7 t.
Which has more power, the Cat 345 or Komatsu PC400?
The Cat 345: Cat 345 258 kW (346 hp), Komatsu PC400 257 kW (345 hp) (net power), a 0% difference.
Which digs deeper, the Cat 345 or Komatsu PC400?
The Komatsu PC400: Cat 345 7.2 m, Komatsu PC400 7.82 m (max digging depth), a 9% difference.
Which reaches further, the Cat 345 or Komatsu PC400?
The Komatsu PC400: Cat 345 11.29 m, Komatsu PC400 11.82 m (max reach at ground level), a 5% difference.
Which has the bigger bucket, the Cat 345 or Komatsu PC400?
The Cat 345: Cat 345 2.41 m³, Komatsu PC400 1.9 m³ (bucket capacity), a 27% difference.
Which has the bigger fuel tank, the Cat 345 or Komatsu PC400?
The Komatsu PC400: Cat 345 600 L, Komatsu PC400 650 L (fuel tank), a 8% difference.
Which turns tighter, the Cat 345 or Komatsu PC400?
The Cat 345: Cat 345 3.53 m, Komatsu PC400 3.645 m (tail swing radius), a 3% difference.
Which is narrower to transport, the Cat 345 or Komatsu PC400?
The Cat 345: Cat 345 3.34 m, Komatsu PC400 3.43 m (overall width), a 3% 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.
