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Krause KR18: an O4-class EU trailer with an 18,000 kg gross weight matching its type designation, a 3,550 kg kerb weight and a length of 7.92 m, on a 4.25 m wheelbase.
At a gross weight of 18,000 kg, the Krause KR18 falls into the EU O4 trailer class, the heavy trailers above 10 tonnes. The type designation "KR18" follows a naming logic common among trailer makers, carrying the weight class straight into the model number: the figure 18 matches exactly the 18 tonnes of gross weight.
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With a kerb weight of 3,550 kg and a length of 7.92 m, the trailer leaves a payload of 14,450 kg, a good four fifths of its gross weight. For a length under eight metres that ratio is notable and points to a compact yet load-rated chassis. At 2.50 m wide and with a 4.25 m wheelbase, the trailer stays within the usual range for this weight class.
As an O4-class vehicle, the KR18 needs an air brake system and is towed only behind vehicles under a category CE licence. Its comparatively short length combined with a high gross weight makes this build attractive for compact but heavy loads such as construction machinery, bulk material in skip containers, or palletised bulk goods.
Buying a used compact heavy trailer, the axle suspension and brake chambers deserve particular attention, since the short length concentrates load under heavy payloads. It is also worth checking the chassis and cross members for deformation and cracking, the air lines for chafing, and the coupling for wear from daily manoeuvring.
Sources: SpecCodex-Register: Kennwerte des Modells KR18
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