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MKV – EU class O4 three-axle trailer with a 27,000 kg gross weight, 5,310 mm wheelbase, six wheels and 20,800 kg payload
With a gross weight of 27,000 kg, the MKV belongs to the heavy trailers of EU class O4, above ten tonnes. Trailers in this class carry air brakes as standard and are built for use behind suitably approved tractor units in commercial transport, not for private towing.
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At a kerb weight of 6,200 kg, the payload comes to 20,800 kg, more than three-quarters of the gross weight. The body length of 9,650 mm and width of 2,590 mm, with six wheels on a 5,310 mm wheelbase, describes a compact but three-axle build: the extra axle compared with two-axle trailers spreads the high payload over more contact area and reduces the load on each individual axle.
Driving such a combination requires at least a category CE licence. The third axle brings not only better load distribution but also more braking capacity through additional drums or discs, though it in turn requires a carefully set brake-force distribution between the axles so that all of them contribute evenly to braking.
When buying used, with three axles it is worth comparing tyre wear across all six wheels, since one axle with a different wear pattern can point to incorrect brake adjustment or a bent axle. The air brake system, with all its cylinders and lines, belongs on a test rig, as does the axle suspension for play and corrosion at the mounting points.
Sources: SpecCodex-Register: Kennwerte des Modells MKV
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Trailer in 3D section
Turn the model, look inside and click an assembly — each one is explained.
