Komatsu D31S-20
Series: Komatsu Crawler Loader
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
Technical data
Engine
| Engine model | S4D102Ecorrect |
|---|---|
| Power | 52 kWcorrect |
| Rated speed | 2,350 rpmcorrect |
| Displacement | 3,921.4 cm³correct |
Dimensions and weights
| Unladen weight | 6,780 kgcorrect |
|---|
Drivetrain and chassis
| Top speed | 6.6 km/hcorrect |
|---|
Working data
| Fuel tank capacity | 115.1 lcorrect |
|---|
Other data
| Height | 2,651.8correct |
|---|
Where this model stands
Power-to-weight ratio: 7.7 kW/t (52 kW / 6.8 t)
Stronger than 20% of the wheel loaders in the register — out of 1,253 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Komatsu D31S-20 have?
The Komatsu D31S-20 delivers 52 kW.
How much does the Komatsu D31S-20 weigh?
The unladen weight is 6,780 kg.
What engine does the Komatsu D31S-20 have?
3,921 cm³ displacement.
How fast does the Komatsu D31S-20 go?
Top speed is 6.6 km/h.
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.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
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This page carries 8 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]
Wheel loader in 3D section
Turn the model, look inside and click an assembly — each one is explained.