Lindner S - Serie
3 models in this series
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.
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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
Models compared
3 of 3 models.
| BF 450 SN / SA1971–1976 | BF 550 SN / SA1973–1976 | BF 650 SN / SA1971–1983 | |
|---|---|---|---|
| Power | 48 hp | 58 hp | – |
| Rated speed | 2,400 rpm | 2,250 rpm | 2,250 rpm |
| Cylinders | 3 | 4 | 4 |
| Displacement | 2,500 cm³ | 3,860 cm³ | 3,860 cm³ |
| Forward gears | 8 | 8 | 12 |
| Reverse gears | 4 | 4 | 6 |
| Wheelbase | 1,945 mm | 2,050 mm | 2,240 mm |
| Length | 3,370 mm | 3,550 mm | 3,810 mm |
| Width | 1,670 mm | 1,700 mm | 1,920 mm |
| Height | 1,350 mm | 1,880 mm | 1,780 mm |
| Unladen weight | 1,620 kg | 1,930 kg | 2,650 kg |
Models
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.
BF 450 SN / SA
The S series from Lindner includes the BF 450 SN / SA. Production: 1971–1976. The engine delivers 48 hp, has 3...
BF 550 SN / SA
The Lindner BF 550 SN / SA is a model in the S series. Production: 1973–1976. The engine delivers 58 hp, has 4...
BF 650 SN / SA
The BF 650 SN / SA from Lindner is part of the S series. Production: 1971–1983. The engine delivers 68 hp, has 4...