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Komatsu PC120-6

Series: Komatsu Hydraulic Excavator

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The Komatsu PC120-6 belongs to the Komatsu Hydraulic Excavator series. The engine delivers 87.1 hp (64.1 kW), has 4 cylinders, with a displacement of 3,921.4 cm³. Rated speed is 2,200 rpm. The unladen weight is 12,030 kg. Ground clearance is 402.3 mm. The tank holds 230.2 litres. The pump delivers 226.4 l/min. The hydraulic tank holds 100.3 litres. Working pressure is 348.2 bar. The engine fitted is the S4D102E. The Komatsu Hydraulic Excavator series covers 179 models. Rated output within it ranges from 72.1 to 3,782.5 hp; the PC120-6 sits at the bottom of that range with 87.1 hp. Its immediate neighbours are the PC120-6 EXCEL below it with 85.7 hp and the PC120 above it with 91.2 hp. 1159 Komatsu models across 39 series are on record. The model is listed under Excavators & compaction. 13 verified figures from 1 source are on file.

Technical data

Engine

Engine modelS4D102Ecorrect
Power87.1 hp (64.1 kW)correct
Rated speed2,200 rpmcorrect
Cylinders4correct
Displacement3,921.4 cm³correct

Dimensions and weights

Ground clearance402.3correct
Unladen weight12,030 kgcorrect

Working data

Pump flow226.4 l/mincorrect
Hydraulic oil capacity100.3 lcorrect
Hydraulic pressure348.2 barcorrect
Fuel tank capacity230.2 lcorrect

Other data

Cab height2,715.8correct

More machines with this engine (S4D102E, 19)

Where this model stands

Power-to-weight ratio: 5.3 kW/t (64 kW / 12 t)

Stronger than 20% of the excavators & compaction in the register — out of 1,666 models with a stated power figure.

Calculated from the documented figures above — not a rating.

Frequently asked questions

How much power does the Komatsu PC120-6 have?

The Komatsu PC120-6 delivers 87.1 hp.

How much does the Komatsu PC120-6 weigh?

The unladen weight is 12,030 kg.

What engine does the Komatsu PC120-6 have?

4 cylinders, 3,921 cm³ displacement.

What to check before buying

  • Check the hour meter against the service records — a replaced instrument is the most common gap.
  • Compare the data plate and chassis number with the papers.
  • Check the weights in the papers against the figures here — attachments change them.
  • Load the hydraulics and watch for sag.
  • Ask about parts availability for this build year — the running costs hang on it.

A general list for this type of machine — no substitute for an inspection or an appraiser.

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This page carries 13 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.

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Other models in this series

Sources: [1]

Excavator in 3D section

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