Urus B 40
Built: 1953–1956 · Series: Allrad
More machines from model year 1953
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Urus-Werke GmbH Allrad – the small four-wheel-drive tractors of the register entry: Allrad 15/25 hp, Allrad Bambi, B 28 and B 40, 7 to 29 kW from one- to three-cylinder engines
This collective page covers the small four-wheel-drive tractors of the register entry Urus-Werke GmbH – compact tractors with one to three cylinders for smaller farms and special purposes. The model names Allrad 15 hp, Allrad 25 hp and Allrad Bambi state the power class directly in the name, while the types B 28 and B 40 follow their own letter-and-number logic.
Read on 3 more paragraphs
The register lists here 5 versions with 7.4 to 29.4 kW or 15 to 40 hp from one- to three-cylinders of 499 to 3,534 cc, unladen weights from 600 to 1,920 kg, lengths from 2,080 to 2,900 mm, widths from 1,400 to 1,670 mm and heights from 1,500 to 1,630 mm at rated speeds of 1,500 to 2,000 rpm. All models run on diesel.
With their low power class, these small four-wheel-drive tractors covered the needs of smaller and medium farms as well as municipal and commercial special tasks, for which the big farm tractors of the established brands were oversized or too expensive.
On these small four-wheel-drive tractors, what counts is the condition and compression of the one- to three-cylinder diesel, the working order of the four-wheel-drive clutch, the tightness of the hydraulics, and the condition of brakes and steering; since these are rare short-run models, parts can mostly still be sourced only through collectors and specialist vintage-parts dealers.
Sources: SpecCodex register, model data: Urus-Werke GmbH Allrad
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 40 hp (29.4 kW)correct |
| Rated speed | 1,500 rpmcorrect |
| Cylinders | 3correct |
| Displacement | 3,534 cm³correct |
| Bore | 100 mmcorrect |
| Stroke | 150 mmcorrect |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 2,900 mmcorrect |
|---|---|
| Width | 1,600 mmcorrect |
| Height | 1,630 mmcorrect |
| Wheelbase | 1,800 mmcorrect |
| Ground clearance | 330 mmcorrect |
| Unladen weight | 1,920 kgcorrect |
Drivetrain and chassis
| Drive | four-wheel drivecorrect |
|---|---|
| Gearbox | 5/1correct |
| Forward gears | 5correct |
| Reverse gears | 1correct |
| Front tyres | 9-24 AScorrect |
| Rear tyres | 9-24 AScorrect |
| Top speed | 21.4 km/hcorrect |
Origin and approval
| Construction | unit construction (no separate frame)correct |
|---|---|
| Units built | ca. 30correct |
Where this model stands
Power-to-weight ratio: 15.3 kW/t (29 kW / 1.9 t)
Power class: Compact (< 40 hp)
Stronger than 25% 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 Urus B 40 have?
The Urus B 40 delivers 40 hp.
How much does the Urus B 40 weigh?
The unladen weight is 1,920 kg.
What engine does the Urus B 40 have?
3 cylinders, 3,534 cm³ displacement, Diesel.
How fast does the Urus B 40 go?
Top speed is 21.4 km/h.
What are the dimensions of the Urus B 40?
2,900 mm × 1,600 mm × 1,630 mm.
When was the Urus B 40 built?
Production years: 1953–1956.
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.
- Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
- 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.
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This page carries 25 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
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