Doosan DX55

Series: Doosan Midi Excavator

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The Doosan Midi Excavator series from Doosan includes the DX55. The engine delivers 42.1 kW, has 4 cylinders, with a displacement of 3,318.4 cm³. Torque is 248.1 Nm. Rated speed is 2,000 rpm. The unladen weight is 5,600 kg. Ground clearance is 365.8 mm. The tank holds 115.1 litres. Maximum torque is reached at 1,300 rpm. The pump delivers 110.2 l/min. The hydraulic tank holds 90.1 litres. Working pressure is 205 bar. The cooling system holds 10.2 litres. The oil fill is 11.7 litres. The electrical system runs on 12 V. The engine fitted is the 4TNV98-Z. The Doosan Midi Excavator series covers 6 models. Rated output within it ranges from 38.1 to 88 kW; the DX55 sits at the bottom of that range with 42.1 kW. Its immediate neighbours are the S75V below it with 40.7 kW and the DX63-3 above it with 43.7 kW. 314 Doosan models across 20 series are on record. The model is listed under Excavators & compaction. 17 verified figures from 1 source are on file.

Technical data

Engine

Engine model4TNV98-Zcorrect
Power42.1 kWcorrect
Rated speed2,000 rpmcorrect
Torque248.1correct
Speed at max. torque1,300 rpmcorrect
Cylinders4correct
Displacement3,318.4 cm³correct
Coolant capacity10.2 lcorrect
Engine oil capacity11.7 lcorrect

Dimensions and weights

Ground clearance365.8correct
Unladen weight5,600 kgcorrect

Drivetrain and chassis

System voltage12 Vcorrect

Working data

Pump flow110.2 l/mincorrect
Hydraulic oil capacity90.1 lcorrect
Hydraulic pressure205 barcorrect
Fuel tank capacity115.1 lcorrect

Other data

Height2,502.4correct

Where this model stands

Power-to-weight ratio: 7.5 kW/t (42 kW / 5.6 t)

Stronger than 13% 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 Doosan DX55 have?

The Doosan DX55 delivers 42.1 kW.

How much does the Doosan DX55 weigh?

The unladen weight is 5,600 kg.

What engine does the Doosan DX55 have?

4 cylinders, 3,318 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 17 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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