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Lindner BF 450 SN / SA

Built: 1971–1976 · Series: S - Serie

More machines from model year 1971

Source: landwirt.com

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The S series from Lindner includes the BF 450 SN / SA. Production: 1971–1976. The engine delivers 48 hp, has 3 cylinders, with a displacement of 2,500 cm³. Rated speed is 2,400 rpm. The machine is 3,370 mm long, 1,670 mm wide and 1,350 mm high. The unladen weight is 1,620 kg. The wheelbase measures 1,945 mm. Transmission: 8V / 4R. The engine is water-cooled. Tyres: front 6,00-16 ( SA: 7,50-18 ), rear 11,0-28. The fuel is diesel. Construction: unit construction (no separate frame). The gearbox offers 8 forward gears. There are also 4 reverse gears. The S - Serie series covers 3 models. Rated output within it ranges from 48 to 68 hp; the BF 450 SN / SA sits at the bottom of that range with 48 hp. Its immediate neighbours are the BF 550 SN / SA above it with 58 hp. Unladen weight within it ranges from 1,620 to 2,650 kg; here the BF 450 SN / SA sits at the bottom of that range with 1,620 kg. 48 Lindner models across 18 series are on record.

Lindner S series – the Bergfreund range BF 450 S, BF 550 S and BF 650 S from Kundl: three- and four-cylinder diesels, 48 to 58 hp, 2,250 to 2,400 rpm

The S series covers at Lindner in Kundl the more powerful Bergfreund types BF 450 S, BF 550 S and BF 650 S, which build on the 50 series but are designed with bigger engines and higher weight for heavier draft work. The SN and SA equipment levels differ in fittings and tyres.

Read on 4 more paragraphs

The register lists here 3 versions with 48 to 58 hp from three- to four-cylinder diesel engines of 2,500 to 3,860 cm³ displacement at rated speeds of 2,250 to 2,400 rpm. Unladen weights range from 1,620 to 2,650 kg, lengths from 3,370 to 3,810 mm, widths from 1,670 to 1,920 mm and heights from 1,350 to 1,880 mm.

With more power than the 50 series, the S series covered larger mountain farms and mixed holdings in the Alpine region, where transport and PTO implements alongside meadow work demanded higher pulling power; Lindner remained specialised in the niche of sloping ground, where competitors such as Fendt or Steyr were less present.

On a used example, clutch and gearbox condition, hydraulic tightness, wear of the brakes, important on sloping ground, and rust on chassis and mudguards count; parts run through Lindner itself and independent farm-machinery workshops.

Unlike the lighter 50 series, the S series relied on water cooling throughout, which dissipates heat more evenly than an air-cooling system under higher continuous load and draft work. Here too, the PTO runs at 540 revolutions per minute for the usual implements of mountain farming. The S series likewise benefits from Lindner's manufacturing in Kundl, still independent today, which eases the supply of maker's own parts.

Sources: SpecCodex register, model data: Lindner S-Serie, Lindner

Technical data

Engine

Fueldieselcorrect
Power48 hpcorrect
Power48 hpcorrect
Rated speed2,400 rpmcorrect
Cylinders3correct
Displacement2,500 cm³correct
Coolingwater-cooledcorrect

Dimensions and weights

Length3,370 mmcorrect
Width1,670 mmcorrect
Height1,350 mmcorrect
Wheelbase1,945 mmcorrect
Unladen weight1,620 kgcorrect

Drivetrain and chassis

Driverear-wheel drivecorrect
Gearbox8V / 4Rcorrect
Forward gears8correct
Reverse gears4correct
Front tyres6, 00-16 ( SA: 7, 50-18 )correct
Rear tyres11, 0-28correct

Origin and approval

Constructionunit construction (no separate frame)correct

Where this model stands

Power-to-weight ratio: 21.8 kW/t (35 kW / 1.6 t)

Power class: Universal (40–100 hp)

Stronger than 32% 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 Lindner BF 450 SN / SA have?

The Lindner BF 450 SN / SA delivers 48 hp.

How much does the Lindner BF 450 SN / SA weigh?

The unladen weight is 1,620 kg.

What engine does the Lindner BF 450 SN / SA have?

3 cylinders, 2,500 cm³ displacement, Diesel.

What are the dimensions of the Lindner BF 450 SN / SA?

3,370 mm × 1,670 mm × 1,350 mm.

When was the Lindner BF 450 SN / SA built?

Production years: 1971–1976.

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 19 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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