Heinrich Lanz D 5506
Built: 1950–1952 · Series: HE-Reihe
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
Heinrich Lanz HE series – final Mannheim Bulldog years D 4506 and D 5506: single-cylinder hot-bulb engine, 2,807 cm³, multi-fuel, 8.8 to 11.7 kW
Heinrich Lanz built the Bulldog in Mannheim from 1921, Germany's first series-produced hot-bulb tractor – a horizontal single-cylinder two-stroke engine that, thanks to hot-bulb ignition, could burn almost any combustible oil. The HE series with the D 4506 and D 5506 models belongs to the last Bulldog production years: in 1956 John Deere took over the Mannheim plant but kept Bulldog production running under the D series until 1960, before its own John Deere models replaced it. Both models share the proven single cylinder with 2,807 cm³ displacement and the typical multi-fuel capability; the register lists gas oil, brown-coal tar oil, diesel oil, paraffin oil and petrol as possible fuels.
Read on 3 more paragraphs
The register lists 2 versions here with 8.8 to 11.7 kW from the single cylinder at 900 to 950 revolutions per minute. Kerb weights range from 1,130 to 1,180 kg, lengths from 2,745 to 2,750 mm, widths from 1,685 to 1,735 mm and heights from 1,850 to 1,880 mm.
The Lanz Bulldog shaped the mechanisation of German farming for decades and stood for ruggedness and simple maintenance without delicate injection technology. The late D models such as the D 4506 and D 5506 mark the end of this design, shortly before hot-bulb engines were superseded by modern post-war injection diesels.
When buying used, the condition of the hot bulb and cylinder liner matters most, since the two-stroke engine depends on precise preheating; leaking piston rings and worn valves show up as poor cold-starting. Coolant circuit, fuel lines for multi-fuel operation and the simple mechanical brake should be checked; spare parts for Bulldog engines are supplied by specialist vintage workshops and Lanz clubs.
Sources: SpecCodex register, model data: Heinrich Lanz HE-Reihe, Lanz Bulldog (Wikipedia)
Technical data
Engine
| Fuel | Vielstoffcorrect |
|---|---|
| Power | 16 hp (11.7 kW)correct |
| Rated speed | 950 rpmcorrect |
| Cylinders | 1correct |
| Displacement | 2,807 cm³correct |
| Bore | 145 mmcorrect |
| Stroke | 170 mmcorrect |
| Injection pressure | 60 barcorrect |
| Cooling | circulating coolingcorrect |
Dimensions and weights
| Length | 2,745 mmcorrect |
|---|---|
| Width | 1,735 mmcorrect |
| Height | 1,850 mmcorrect |
| Wheelbase | 1,670 mmcorrect |
| Ground clearance | 440 mmcorrect |
| Unladen weight | 1,180 kgcorrect |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | 6V/2Rcorrect |
| Front tyres | 4.50-16correct |
| Rear tyres | 7.00-36correct |
| Top speed | 18.2 km/hcorrect |
Origin and approval
| Construction | unit construction (no separate frame)correct |
|---|---|
| Units built | 8,255correct |
Where this model stands
Power-to-weight ratio: 9.9 kW/t (12 kW / 1.2 t)
Power class: Compact (< 40 hp)
Stronger than 4% 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 Heinrich Lanz D 5506 have?
The Heinrich Lanz D 5506 delivers 16 hp.
How much does the Heinrich Lanz D 5506 weigh?
The unladen weight is 1,180 kg.
What engine does the Heinrich Lanz D 5506 have?
1 cylinders, 2,807 cm³ displacement, Vielstoff.
How fast does the Heinrich Lanz D 5506 go?
Top speed is 18.2 km/h.
What are the dimensions of the Heinrich Lanz D 5506?
2,745 mm × 1,735 mm × 1,850 mm.
When was the Heinrich Lanz D 5506 built?
Production years: 1950–1952.
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 23 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: Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved August 2026) · How we check the data
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