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Comparison · Excavator

Caterpillar 320 vs Komatsu PC138USLC-11

The Caterpillar 320 is about 55% heavier than the Komatsu PC138USLC-11 (22,500 vs 14,500 kg), which usually means more stability and lifting capacity but higher transport weight.

The Caterpillar 320 has about 68% more engine power (121 kW (162 hp) vs 72 kW (97 hp)).

Beyond the numbers, compare local dealer support, parts availability and resale value for Caterpillar and Komatsu in your region: over the life of a machine they often matter more than small specification differences.

Caterpillar 320 hydraulic excavator digging on a site
Caterpillar Caterpillar 320
Komatsu machine similar to the Komatsu PC138USLC-11 (related model may be pictured)
Komatsu Komatsu PC138USLC-11
Operating weight 22,500 kg (49,600 lb)14,500 kg (32,000 lb)
Engine power 121 kW (162 hp)72 kW (97 hp)
Net power ≈121 kW (162 hp)≈72 kW (97 hp)
Max. digging depth ≈6.7 m (22 ft)≈5.5 m (18 ft)
Engine Cat C7.1—
Max. reach at ground level ≈9.9 m (32 ft 6 in)—
Bucket capacity 0.9–1.5 m³ (1.2–2.0 yd³)—
Fuel tank ≈345 L (91 US gal)—
Emissions EPA Tier 4 Final / EU Stage V—
Tail swing —Tight (ultra-short)
Strengths
  • + Factory-integrated Cat Grade with 2D and Assist features
  • + Up to 25% lower maintenance cost than the previous F-series, according to Cat
  • + Excellent resale value and dealer support worldwide
  • + Works in a single traffic lane
  • + Good lifting for a short-tail machine
  • + KOMTRAX standard
Watch-outs
  • − Higher purchase price than most rivals
  • − Technology packages add significant cost
  • − Electronic complexity can mean dealer-only diagnostics
  • − Less stable over the side than conventional machines
Full 320 reviewFull PC138USLC-11 review

Specifications are typical figures for standard configurations and may be measured differently by each manufacturer (for example net vs gross power). Always confirm with the manufacturer or dealer. Build another comparison.