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Skibicki NWN80.14B: heavy-haulage trailer, built 2015, gross weight 45,000 kg, EU category O4, unladen weight 11,590 kg, payload 33,410 kg
With a gross weight of 45,000 kg, the NWN80.14B, built in 2015, sits at the upper end of EU category O4, far above the ten tonnes separating this category from lighter trailer classes. A vehicle of this size is built to carry heavy, concentrated loads.
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At a length of 11,437 mm and a width of 2,550 mm, the unladen weight is 11,590 kg, more than a quarter of the gross weight. Such a high own weight at this length points to a massive frame structure, the kind needed to carry very high point loads, such as construction machinery or plant components.
Category O4 requires air brakes acting on every axle. A trailer like this is towed by vehicles holding driving licence category CE, in practice heavy semi-tractors with a matching towing capacity. A payload of 33,410 kg requires a matching hitch and an approved coupling load on the towing vehicle.
Buying a heavy-haulage trailer with such a high unladen weight used, the frame around the axle mounts and the load bed needs checking: localised deformation here results from heavy, unevenly distributed loads. The air brake system, axle bearings and the condition of the lashing points need checking, as do the tyres for even wear. The frame also deserves attention wherever loading ramps or supports make contact when moving construction machinery, since that is usually where the first cracks appear.
Sources: SpecCodex-Register: Kennwerte des Modells NWN80.14B
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