Deutz DK 90
Built: 1957–1965 · Series: Raupe
More machines from model year 1957
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Deutz DK 90: air-cooled six-cylinder crawler tractor with 7,984 cm³ displacement, 90 hp (66 kW), 8,950 kg weight and 11.3 km/h top speed
Deutz of Cologne built crawler tractors alongside wheeled ones for tasks where wheeled vehicles reach their limits on soft or uneven ground. The DK 90 belongs to this class of tracked tractors, used for heavy drawbar work in forestry, construction and agriculture.
Read on 3 more paragraphs
The six-cylinder diesel engine with 7,984 cm³ displacement is air-cooled and produces 90 hp, or 66 kW, at 1,650 rpm. At 8,950 kg weight, 2,130 mm width and 2,462 mm height, the DK 90 ranks among the heavy crawler tractors of its time; the top speed of 11.3 km/h shows the machine was designed for pulling power rather than travel speed.
At 11.3 km/h, the DK 90 sits well below the 40 km/h limit of driving licence category L. The tracked undercarriage spreads the high weight over a large ground-contact area, allowing drawbar work on ground where a wheeled tractor of equal output would sink in. The air-cooled six-cylinder engine needs no cooling water and stays robust even under sustained load on construction sites or in forestry work.
When buying a crawler tractor this old, check the condition of the tracks, track rollers, and drive and idler wheels, whose wear strongly affects performance. Also check the six-cylinder engine's cooling fins, the injection pump and the tightness of the final drives, since renewing a complete track undercarriage is costly and labour-intensive.
Sources: SpecCodex-Register: Kennwerte des Modells Deutz DK 90, Deutz (manufacturer)
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 90 hp (66 kW)correct |
| Rated speed | 1,650 rpmcorrect |
| Cylinders | 6correct |
| Displacement | 7,984 cm³correct |
| Cooling | air-cooledcorrect |
Dimensions and weights
| Width | 2,130 mmcorrect |
|---|---|
| Height | 2,462 mmcorrect |
| Wheelbase | 2,370 mmcorrect |
| Unladen weight | 8,950 kgcorrect |
Drivetrain and chassis
| Drive | Kettecorrect |
|---|---|
| Gearbox | 5/2-Getriebecorrect |
| Front tyres | Kette 460/560correct |
| Rear tyres | Kette 460/560correct |
| Top speed | 11.3 km/hcorrect |
Working data
| Fuel tank capacity | 135 lcorrect |
|---|
Where this model stands
Power-to-weight ratio: 7.4 kW/t (66 kW / 8.9 t)
Power class: Universal (40–100 hp)
Stronger than 60% 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 Deutz DK 90 have?
The Deutz DK 90 delivers 90 hp.
How much does the Deutz DK 90 weigh?
The unladen weight is 8,950 kg.
What engine does the Deutz DK 90 have?
6 cylinders, 7,984 cm³ displacement, Diesel.
How fast does the Deutz DK 90 go?
Top speed is 11.3 km/h.
What are the dimensions of the Deutz DK 90?
2,130 mm × 2,462 mm.
When was the Deutz DK 90 built?
Production years: 1957–1965.
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 18 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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Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.