Metallwerk Creussen Unitrak UD 12
Built: 1950–1955 · Series: Unitrak
More machines from model year 1950
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
Metallwerk Creussen Unitrak: the Unitrak UD 12 was an air-cooled single-cylinder diesel tractor built from 1950 to 1955 with a 625 cm³ engine, 12 hp (8.83 kW) and a weight of 850 kg
Small tractors such as the Unitrak UD 12 represent the post-war period of West German farm machinery building, when numerous smaller works built simple, affordable diesel tractors for small and medium farms that could not yet afford machines from the large manufacturers. The UD 12, built from 1950 to 1955, belongs to that period.
Read on 3 more paragraphs
The single-cylinder engine displaces 625 cm³ and produces 12 hp, or 8.83 kW, is air-cooled, and gives the UD 12 a top speed of 16 km/h. On a 1,500 mm wheelbase the tractor weighs just 850 kg, measuring 3,200 mm in length, 1,700 mm in width and 1,300 mm in height, a small, light machine for an equally small holding.
Air cooling made such single cylinders resistant to frost damage and simple to maintain, since there was no radiator, water pump or hoses to fail; in return, noise and vibration levels were higher than with water-cooled engines. For light towing and attachment work on small plots this was an acceptable trade-off, one common among many small post-war manufacturers of the time.
A tractor of this size and age is today mainly a collector's piece. What matters is the condition of the cylinder's cooling fins, wear on the single-cylinder drivetrain, and rust on the chassis. Spare parts for this small, rare manufacturer are found almost exclusively through collector circles.
Sources: SpecCodex-Register: Kennwerte des Modells Unitrak UD 12
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 12 hp (8.83 kW)correct |
| Cylinders | 1correct |
| Displacement | 625 cm³correct |
| Cooling | air-cooledcorrect |
Dimensions and weights
| Length | 3,200 mmcorrect |
|---|---|
| Width | 1,700 mmcorrect |
| Height | 1,300 mmcorrect |
| Wheelbase | 1,500 mmcorrect |
| Ground clearance | 330 mmcorrect |
| Unladen weight | 850 kgcorrect |
Drivetrain and chassis
| Drive | Vorderachsantriebcorrect |
|---|---|
| Gearbox | 4-Gang-Schaltgetriebe, Wählhebel vor/zurückcorrect |
| Front tyres | 8, 00 x 20 AScorrect |
| Rear tyres | Lenkrad 450 mmcorrect |
| Top speed | 16 km/hcorrect |
Origin and approval
| Construction | Einachsschlepper mit Universalträgercorrect |
|---|---|
| Units built | unbekanntcorrect |
Where this model stands
Power-to-weight ratio: 10.4 kW/t (9 kW / 0.8 t)
Power class: Compact (< 40 hp)
Stronger than 2% 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 Metallwerk Creussen Unitrak UD 12 have?
The Metallwerk Creussen Unitrak UD 12 delivers 12 hp.
How much does the Metallwerk Creussen Unitrak UD 12 weigh?
The unladen weight is 850 kg.
What engine does the Metallwerk Creussen Unitrak UD 12 have?
1 cylinders, 625 cm³ displacement, Diesel.
How fast does the Metallwerk Creussen Unitrak UD 12 go?
Top speed is 16 km/h.
What are the dimensions of the Metallwerk Creussen Unitrak UD 12?
3,200 mm × 1,700 mm × 1,300 mm.
When was the Metallwerk Creussen Unitrak UD 12 built?
Production years: 1950–1955.
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.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →
We ask the suppliers and come back with price and lead time.
Request spare parts →
This page carries 19 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.
Missing a figure you were looking for? Report it →
Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →
Sources: [1]
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.