Bungartz U1
Built: 1948–1954 · Series: U
More machines from model year 1948
Bungartz U1: air-cooled walking tractor in frameless block construction, 500 kg unladen weight, 950 mm width, built 1948 to 1954
The U1 is a single-axle walking tractor in which the engine and gearbox, built as a frameless block, form the load-bearing structure themselves instead of sitting on a separate frame – a design typical of compact single-axle tractors of the post-war years that saves weight. The U1 was built from 1948 to 1954.
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The U1 carries an air-cooled single-cylinder engine of 399 cm³ displacement, running on either petrol or diesel, and a 4/2 gearbox with four forward and two reverse gears. With drive to both wheels of its single axle, an unladen weight of 500 kg, a length of 2,850 mm, a width of up to 950 mm and a height of 1,250 mm, it reaches a top speed of 13.6 km/h.
At 13.6 km/h the U1 falls within driving licence category L up to 40 km/h. The narrow build of under a metre in width suits the walking tractor to work between tight crop rows, such as those found in vineyards, orchards and vegetable growing; air cooling spares the simple block engine a water pump and radiator.
When buying such an old walking tractor second-hand, the condition of the cooling fins and air ducting, wear on the clutch and gearbox, and rust on the sheet-metal parts of the block housing matter. Because Bungartz walking tractors are rare today, the completeness of attachments and original parts usually decides the value of the vehicle.
Sources: SpecCodex-Register: Kennwerte des Modells Bungartz U1
Technical data
Engine
| Fuel | Benzin, Diesel (U1E: elektrisch betrieben)correct |
|---|---|
| Rated speed | 2000–3000 rpmcorrect |
| Cylinders | 1correct |
| Displacement | 399 cm³correct |
| Cooling | air-cooledcorrect |
Dimensions and weights
| Length | 2,850 mmcorrect |
|---|---|
| Width | 950 mm (maximum)correct |
| Height | 1,250 mmcorrect |
| Unladen weight | 500 kgcorrect |
Drivetrain and chassis
| Drive | single-axle drivecorrect |
|---|---|
| Gearbox | 4/2-Getriebecorrect |
| Top speed | 13.6 km/hcorrect |
Origin and approval
| Construction | frameless unit constructioncorrect |
|---|
Frequently asked questions
How much does the Bungartz U1 weigh?
The unladen weight is 500 kg.
What engine does the Bungartz U1 have?
1 cylinders, 399 cm³ displacement, Benzin, Diesel (U1E: elektrisch betrieben).
How fast does the Bungartz U1 go?
Top speed is 13.6 km/h.
What are the dimensions of the Bungartz U1?
2,850 mm × 950 mm × 1,250 mm.
When was the Bungartz U1 built?
Production years: 1948–1954.
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 14 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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Sources: Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved August 2026) · How we check the data
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.
