Kullman Other models
1 model in this series
Kullman K-W – O3-class trailer: 9,500 kg gross weight, 7,280 kg unladen weight, 11,480 mm length and 6,340 mm wheelbase as a heavy drawbar trailer.
Between the ordinary car trailer and the semi-trailer sits the class of heavy drawbar trailers with a gross weight between 3.5 and 10 tonnes. They are pulled by a stand-alone lorry or a suitable tractor unit, carry no drive of their own, and add loading area to a combination without needing a second articulated unit.
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The K-W carries a gross weight of 9,500 kg. Against an unladen weight of 7,280 kg that leaves a payload of 2,220 kg. Over a body length of 11,480 mm and a width of 2,430 mm, that load sits on a 6,340 mm wheelbase – a long build with a comparatively high unladen weight, typical of bulky or high-volume cargo.
At 9,500 kg gross weight the K-W falls into EU trailer class O3, and so carries an air brake system from the factory rather than the simple overrun brake fitted to lighter trailers. Towing it requires at least driving licence category BE or C1E depending on the combined weight of the outfit, plus a matching hitch on the tractor unit.
When buying a used trailer in this weight class, check the air brake system: brake cylinders, lines and coupling heads should be free of corrosion, and leaks show up as pressure loss after parking. On the chassis, fatigue shows first on the cross members and at the axle mounting points; on the drawbar, check play in the towing eye and the operation of the jockey wheel.
Sources: SpecCodex-Register: Kennwerte des Modells K-W
Models
Trailer in 3D section
Turn the model, look inside and click an assembly — each one is explained.
