Schlüter 25
Built: 6/1959–4/1961 · Series: S
More machines from model year 1959
Schlüter S – the Super range between the small AS and the large Euro Trac tractors: 25 to S 900, single- to six-cylinder diesels of 1.5 to 6.5 litres, 11 to 58.6 kW, 1.3 to 3.8 t
The S range – S standing at Schlüter for Super – was the mid-size and large programme of the Munich, and later Freising, engine and tractor maker founded in 1899, positioned between the small AS range and the later large Trac tractors. The span runs from the small single-cylinder model 25 to the large six-cylinder S 900, showing the path Schlüter took from the 1950s into the 1970s towards ever higher power classes.
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The register lists 6 versions with 11 to 58.6 kW from single- to six-cylinder diesels of 1,506 to 6,494 cm³ at 1,500 to 1,800 rpm, unladen weights from 1,285 to 3,800 kg, lengths from 2,630 to 4,410 mm, widths from 1,532 to 1,970 mm and heights from 1,500 to 1,925 mm; one version is listed at 25 hp.
The S range accompanied Schlüter's rise from a small Bavarian tractor maker to a supplier of high-power standard tractors, with which the company later competed against Fendt, Deutz and the international large-tractor makers on the way to its own later Trac generation, before the Euro Trac succeeded the range.
On used tractors, both the older small models and the large S 900 versions, engine and injection pump, clutch and gearbox, hydraulics and linkage, brakes and sheet metal and frame for rust count; since Schlüter ended tractor production in 1993, parts now run only through specialists.
Sources: SpecCodex register, model data: Schlüter S
Technical data
Engine
| Power | 25 hp (18.3 kW)correct |
|---|---|
| Rated speed | 1,650 rpmcorrect |
| Cylinders | 2correct |
| Displacement | 2,512 cm³correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 2,865 mmcorrect |
|---|---|
| Width | 1,580 mmcorrect |
| Height | 1,545 mmcorrect |
| Wheelbase | 1,890 mmcorrect |
| Unladen weight | 1,525 kgcorrect |
Drivetrain and chassis
| Gearbox | Hurth G815correct |
|---|---|
| Forward gears | 6correct |
| Reverse gears | 1correct |
| Front tyres | 5.00-16correct |
| Rear tyres | 9-32, 10-28correct |
| Top speed | 20 km/hcorrect |
Working data
| Fuel tank capacity | 25 lcorrect |
|---|
Origin and approval
| Construction | Standardtraktorcorrect |
|---|---|
| Units built | 860correct |
Where this model stands
Power-to-weight ratio: 12 kW/t (18 kW / 1.5 t)
Power class: Compact (< 40 hp)
Stronger than 12% 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 Schlüter 25 have?
The Schlüter 25 delivers 25 hp.
How much does the Schlüter 25 weigh?
The unladen weight is 1,525 kg.
What engine does the Schlüter 25 have?
2 cylinders, 2,512 cm³ displacement.
How fast does the Schlüter 25 go?
Top speed is 20 km/h.
What are the dimensions of the Schlüter 25?
2,865 mm × 1,580 mm × 1,545 mm.
When was the Schlüter 25 built?
Production years: 6/1959–4/1961.
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 21 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
Turn the model, look inside and click an assembly — each one is explained.