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Henken HP 3500 – O2-class trailer with a gross weight of 3,500 kg, 2,080 kg payload, six wheels and a width of 2.10 m, built in 2007.
The type designation HP 3500 states the weight class directly in its name: with a gross weight of 3,500 kg, the trailer falls into EU trailer class O2, the light trailers from 750 to 3,500 kg that can be towed on a car driving licence.
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With an unladen weight of 1,420 kg, payload comes to 2,080 kg, a moderate share of the gross weight. At 2.10 m wide and with six wheels, the trailer sits on a narrower chassis than the 2.55 m maximum width allowed for trailers, with the load spread over more wheels than is usual for simple single-axle or tandem trailers in this weight class.
Class O2 trailers are usually fitted with an overrun brake. A category B driving licence allows towing such trailers up to a gross weight of 3,500 kg as a combination, depending on the combination also with code B96 or category BE. The narrower width points to a chassis tailored to specific cargo, such as narrow machinery or vehicles, rather than a general platform for palletised goods.
When buying a used unit, check the overrun brake mechanism: wear on the damper and play in the drawtube are common on heavily used trailers. Listen to the bearings on all six wheels for play, check the brake linkage for even adjustment, check the frame for corrosion around the wheel mounts, and check the drawbar coupling for wear.
Sources: SpecCodex-Register: Kennwerte des Modells Henken HP 3500, Zulassungsdaten RDW (Niederlande)
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