Technical register for agricultural, construction and commercial machinery · sourced data
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Hermann Lanz Hela D 538 S

Built: 11/66–06/73 · Series: Other models

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The Hela D 538 S from Hermann Lanz is part of the Pozostałe modele series. Production: 11/66–06/73. The engine delivers 40 hp, has 3 cylinders, with a displacement of 2,232 cm³. Rated speed is 2,300 rpm. The machine is 3,300 mm long, 1,040 mm wide and 1,230 mm high. The unladen weight is 1,520 kg. The wheelbase measures 1,860 mm. Ground clearance is 300 mm. Top speed is 20 km/h. Transmission: 10/2. The engine is water-cooled. Tyres: front 4.50-16 ASF, rear 10-24 AS. The fuel is diesel. Construction: unit construction (no separate frame). Around 48 units were built. Rated output across the Hermann Lanz range ranges from 11 to 60 hp; the Hela D 538 S sits in the middle of that range with 40 hp. Its immediate neighbours are the D 438 Export below it with 38 hp and the D 145 above it with 45 hp. Unladen weight across the Hermann Lanz range ranges from 1,120 to 3,950 kg; here the Hela D 538 S sits at the bottom of that range with 1,520 kg. 48 Hermann Lanz models across 8 series are on record.

Hermann Lanz – other models: the collective page of the Aulendorf maker outside the named ranges, one- to three-cylinder diesels of 1,558 to 2,232 cc, 8 to 16 kW

This page gathers the tractors of Hermann Lanz of Aulendorf in Upper Swabia that the register could not assign to a dedicated range. The maker Hermann Lanz should not be confused with the Mannheim firm Heinrich Lanz, whose Bulldog tractors shaped the German market at the same time; the Aulendorf company independently built smaller and medium agricultural tractors. This collective page holds three models – D47, Hela D 538 S and Samson 2 – with differing cylinder counts, showing the spread of the Aulendorf programme between the small and medium class.

Read on 3 more paragraphs

The register lists 3 versions here with 8.1 to 16 kW from one- to three-cylinder diesel engines of 1,558 to 2,232 cc, kerb weights of 1,350 to 1,700 kg, lengths of 2,500 to 3,300 mm, widths of 1,040 to 1,540 mm and heights of 1,230 to 1,560 mm at 1,500 to 2,300 revolutions per minute.

Tractors of this size were common in the peasant farming of Upper Swabia and neighbouring regions, where small and medium holdings relied on nimble, cheap-to-run tractors for field and transport work, before larger and more powerful tractors came to dominate farms from the 1960s.

When buying a used example of these early Aulendorf models, the main points are the condition of the engine and injection pump, as spare parts for such small production runs are hard to find through regular trade, plus the condition of chassis, steering and brakes and corrosion on panels and mudguards; parts usually come from breakers or dealers specialising in historic agricultural machinery.

Sources: SpecCodex register, model data: Hermann Lanz (weitere Modelle)

Technical data

Engine

Fueldieselcorrect
Power40 hpcorrect
Rated speed2,300 rpmcorrect
Cylinders3correct
Displacement2,232 cm³correct
Coolingwater-cooledcorrect

Dimensions and weights

Length3,300 mmcorrect
Width1,040 mmcorrect
Height1,230 mm (to bonnet)correct
Wheelbase1,860 mmcorrect
Ground clearance300 mmcorrect
Unladen weight1,520 kgcorrect

Drivetrain and chassis

Driverear-wheel drivecorrect
Gearbox10/2correct
Front tyres4.50-16 ASFcorrect
Rear tyres10-24 AScorrect
Top speed20 km/hcorrect

Origin and approval

Constructionunit construction (no separate frame)correct
Units built48correct

Where this model stands

Power-to-weight ratio: 19.3 kW/t (29 kW / 1.5 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 Hermann Lanz Hela D 538 S have?

The Hermann Lanz Hela D 538 S delivers 40 hp.

How much does the Hermann Lanz Hela D 538 S weigh?

The unladen weight is 1,520 kg.

What engine does the Hermann Lanz Hela D 538 S have?

3 cylinders, 2,232 cm³ displacement, Diesel.

How fast does the Hermann Lanz Hela D 538 S go?

Top speed is 20 km/h.

What are the dimensions of the Hermann Lanz Hela D 538 S?

3,300 mm × 1,040 mm × 1,230 mm.

When was the Hermann Lanz Hela D 538 S built?

Production years: 11/66–06/73.

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 20 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) · Values adopted and presented in our own form; changes from the source are possible. · How we check the data

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