Irus U900
Series: U
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Irus U – single-axle mini-tractors from Burladingen: types U 600 to U 1402, single-cylinder engines of around 250 cm³, unladen weights of 190 to 250 kg, diesel or petrol drive
Irus, a manufacturer based in Burladingen on the Swabian Jura, built a range of single-axle mini-tractors under the U designation, widespread in the post-war period for tilling small plots and in direct-marketing operations. The types U 600, U900, U 1200/K and U 1402 recorded in the register differ mainly in the engine offered, which depending on the version ran on diesel or petrol, or the corresponding mixture-fuelled drive.
Read on 3 more paragraphs
The register lists 4 versions with single-cylinder engines of around 250 cm³ displacement, unladen weights from 190 to 250 kg and a rated speed of 3,000 rpm throughout.
Single-axle mini-tractors such as the Irus U range served smaller and part-time farms, market gardens and vineyards as a lightweight, manoeuvrable power source for tilling and pulling transport trailers, in a market segment served in southern Germany by numerous smaller manufacturers.
On a used Irus U-range implement, the condition of the single-cylinder engine including the carburettor or injection system, wear on the clutch and drive belt, and the function of the steering handles all count; parts for these early single-axle implements are practically only available through collectors and specialist secondhand-parts exchanges.
Sources: SpecCodex register, model data: Irus U
Technical data
Engine
| Fuel | Benzin oder Dieselcorrect |
|---|---|
| Power | 7 hpcorrect |
| Rated speed | 3,000 rpmcorrect |
| Cylinders | 1correct |
| Displacement | 250 cm³correct |
| Cooling | air-cooledcorrect |
Dimensions and weights
| Unladen weight | 190 kgcorrect |
|---|
Drivetrain and chassis
| Drive | four-wheel drivecorrect |
|---|---|
| Gearbox | 3/3correct |
| Forward gears | 3correct |
| Reverse gears | 3correct |
| Top speed | 15.2 km/hcorrect |
Origin and approval
| Construction | Einachsschleppercorrect |
|---|
Where this model stands
Power-to-weight ratio: 27.1 kW/t (5 kW / 0.2 t)
Power class: Compact (< 40 hp)
Stronger than 0% of the tractors in the register — out of 15,663 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Irus U900 have?
The Irus U900 delivers 7 hp.
How much does the Irus U900 weigh?
The unladen weight is 190 kg.
What engine does the Irus U900 have?
1 cylinders, 250 cm³ displacement, Benzin oder Diesel.
How fast does the Irus U900 go?
Top speed is 15.2 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.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- 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 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]
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.