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Comparison · Mini excavator

Hitachi ZX55U-6 vs Komatsu PC55MR-5

The Hitachi ZX55U-6 and Komatsu PC55MR-5 are almost identical in operating weight (about 5,310 and 5,210 kg).

The Hitachi ZX55U-6 has about 4% more engine power (29 kW (39 hp) vs 28 kW (38 hp)).

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

Hitachi ZX55U-6
Hitachi Hitachi ZX55U-6
Komatsu PC55MR-5
Komatsu Komatsu PC55MR-5
Operating weight 5,310 kg (11,700 lb)5,210 kg (11,500 lb)
Engine power 29 kW (39 hp)28 kW (38 hp)
Engine power ≈28.2–29.1 kW (38–39 hp)28.3 kW (38 hp) at 2,400 rpm
Max. dig depth 3.83 m (12 ft 7 in)≈3.80 m (12 ft 6 in)
Max. reach 6.26 m (20 ft 6 in)—
Tear-out force 36.9 kN (8,295 lbf)≈39 kN
Tail swing Short (U = ultra-short)Minimal radius (MR)
Engine Yanmar, Stage V—
Transport dimensions (L × W × H) ≈5.52 × 2.0 × 2.53 m—
Track width 400 mm—
Bucket capacity —0.055–0.18 m³
Strengths
  • + Short tail swing on a 5-tonne machine
  • + Smooth Hitachi hydraulics
  • + Popular plant-hire machine in the UK and Europe
  • + Good reach (6.26 m) for its size
  • + Minimal-radius design on a 5-tonne machine
  • + Komatsu engine and hydraulics
  • + Komtrax telematics in many markets
  • + Strong resale in Europe and Asia
Watch-outs
  • − Lower power than 45–50 hp conventional rivals
  • − Hitachi mini support varies by region
  • − Lower engine power than some 45–50 hp rivals
  • − Some reviewers find it underwhelming vs the competition (see videos)
Full ZX55U-6 reviewFull PC55MR-5 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.