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Siegmar TAN 2-2L: trailer, built 2007, gross weight 20,000 kg, EU category O4, high unladen weight pointing to a reinforced build
With a gross weight of 20,000 kg, the TAN 2-2L, built in 2007, falls into EU category O4, the heavy trailers above ten tonnes. The model designation, with the digit sequence 2-2L, points to a two-axle configuration common in this weight class.
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At a length of 8,880 mm and a width of 2,550 mm, the unladen weight is 7,100 kg, more than a third of the gross weight. The remaining payload of 12,900 kg thus sits against a comparatively heavy own weight, the kind that a reinforced frame and floor built for hard loads brings with it.
Category O4 requires air brakes. A trailer like this is towed by vehicles holding driving licence category CE or C1E, matched to the combination's permitted gross weight. The high unladen weight relative to the comparatively short length points to a bed built for concentrated, hard loads rather than bulky cargo.
Buying such a heavy, short trailer used, the condition of the load bed itself matters most: dents, cracks or rusted-through flooring show up there first under concentrated, hard loads, not on the frame. Axle bearings and the brake system need checking, as does the coupling for wear, since a high unladen weight puts permanently more strain on it. With such a short, heavy build, the side panels are also worth assessing, since a concentrated load puts forces on them that a longer, lighter trailer never has to withstand.
Sources: SpecCodex-Register: Kennwerte des Modells TAN 2-2L
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