Holder AR
1 model in this series
Holder AR 4 / AR 6: water-cooled single-cylinder diesel compact tractor from the AR series with 500 cc displacement and 7.4 kW output, in the 750 kg and 875 kg weight variants, built 1954 to 1957
Holder, based in Metzingen, Baden-Württemberg, built small, simple field tractors in the 1950s for farms seeking a compact, affordable replacement for horse teams. The AR series, with the AR 4 and AR 6 versions, was built between 1954 and 1957.
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The water-cooled single-cylinder diesel engine of 500 cc delivers 7.4 kW, or 10 hp, and reaches a top speed of 16 km/h. Depending on the version, the machine weighs 750 kg as the AR 4 or 875 kg as the AR 6, the only two differing weight variants of this series, each carrying its own model designation.
A water-cooled single-cylinder diesel this light was built for small farms and specialist crops, for basic tillage and driving small mounted implements such as mowers or single-row ploughs. The low top speed of 16 km/h clearly shows the machine was built for fieldwork rather than further road travel.
When buying such an old Holder AR, the condition of the cooling system with water pump and radiator, compression and starting behaviour of the single cylinder, and rust on the frame and sheet-metal parts all matter. Since the AR 4 and AR 6 differ in weight, it is worth checking the axles, tyres, brakes and clutch condition of the specific version; spare parts at this age can only be sourced through Holder dealers and vintage-tractor specialists.
Sources: SpecCodex-Register: Kennwerte des Modells Holder AR 4 / AR 6, Holder (manufacturer)
Models
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.