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Kooijmans AK 3500: a light three-axle EU class O2 trailer with a 3,500 kg gross weight and a low kerb weight of only 750 kg
With a gross weight of 3,500 kg, the AK 3500 falls into EU trailer class O2, the usual size for trailers behind cars and light commercial vehicles. The model name reflects the weight limit of the class directly, a common naming practice among makers of light trailers of this kind.
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At a kerb weight of just 750 kg, the payload works out to 2,750 kg, more than three and a half times the trailer's own weight, a high figure for this class. The six wheels are spread across three axles with a close 755 mm spacing, so the trailer stands on a wide, load-bearing axle base despite its low kerb weight. The width is 2.40 m.
Despite three axles, the AK 3500 stays in class O2 and runs on an overrun brake rather than an air system. This combination of low kerb weight and three axles is typical of trailers built for good ground clearance and even load distribution, for instance for boats, machinery or agricultural equipment that is light itself but carries delicate cargo.
When buying used, the three-axle group deserves particular attention given this low kerb weight: the axles and wheel bearings are generously sized for this weight, so wear tends to show up first on the overrun mechanism and brake cables instead. The tyres should also be checked for even wear across all three axles before purchase.
Sources: SpecCodex-Register: Kennwerte des Modells Kooijmans AK 3500
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