Hanomag K 55 S
Built: 1950–1956 · Series: K
More machines from model year 1950
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Hanomag K – Heavy Tractor Series, 1933 to 1964: two- to six-cylinder diesels with 37 to 66 kW (50 to 90 hp), 3,715 to 9,348 cm³ displacement, water-cooled
The K series covered Hanomag's heavier tractor models across an unusually long production run from 1933 to 1964. According to the register, output of the recorded models ranges from 37 to 66 kW, with models rated in horsepower from 50 to 90 hp, using two- to six-cylinder engines with displacement from 3,715 to 9,348 cm³.
Read on 3 more paragraphs
Recorded operating weight runs from 4,510 to 8,700 kg, and top speed of the listed models spans 6 to 9.7 km/h – typical for heavy field tractors of the era without gearing designed for road travel.
Models such as the K90/E, with over 9,000 cm³ of displacement, ranked among the largest tractors of their time in Germany. For a used K model, the exact type designation matters most given the long production span, as pre-war and post-war designs are fundamentally different technically.
The entire production run of the K series, from 1933 to 1964, lay well before the introduction of the first European emissions stages in 1999, so all models ran without any emissions certification. With output up to 66 kW, the most powerful K models already reached the boundary of three-point category II under ISO 730, though many historic implements of that period were not yet built to this standard. Original parts for the K series are likewise scarce today and mainly sourced through specialist vintage-machinery dealers, since Hanomag tractor production has not existed since 1971.
Sources: SpecCodex register, model data: Hanomag K
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 55 hpcorrect |
| Power | 55 hpcorrect |
| Rated speed | 1,300 rpmcorrect |
| Cylinders | 4correct |
| Displacement | 5,702 cm³correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 3,140 mmcorrect |
|---|---|
| Width | 1,350 mmcorrect |
| Height | 2,090 mmcorrect |
| Unladen weight | 4,560 kgcorrect |
Drivetrain and chassis
| Drive | Raupecorrect |
|---|---|
| Gearbox | 3V / 1Rcorrect |
| Forward gears | 3correct |
| Front tyres | Kettenlaufwerkcorrect |
| Rear tyres | Kettenlaufwerkcorrect |
| Top speed | 6 km/hcorrect |
Other data
| PTO speed | 540 rpmcorrect |
|---|
Where this model stands
Power-to-weight ratio: 8.9 kW/t (40 kW / 4.6 t)
Power class: Universal (40–100 hp)
Stronger than 38% 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 Hanomag K 55 S have?
The Hanomag K 55 S delivers 55 hp.
How much does the Hanomag K 55 S weigh?
The unladen weight is 4,560 kg.
What engine does the Hanomag K 55 S have?
4 cylinders, 5,702 cm³ displacement, Diesel.
How fast does the Hanomag K 55 S go?
Top speed is 6 km/h.
What are the dimensions of the Hanomag K 55 S?
3,140 mm × 1,350 mm × 2,090 mm.
When was the Hanomag K 55 S built?
Production years: 1950–1956.
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 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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Other models in this series
Sources: [1]
Tractor in 3D section
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