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Kompenhans KHM 9113: a compact EU class O4 trailer with a 12,500 kg gross weight packed into just 4.55 m of overall length
With a gross weight of 12,500 kg, the KHM 9113 falls into EU trailer class O4, the heavy trailers and semi-trailers registered above 10 tonnes. At just 4.55 m long and 2.50 m wide, it is remarkably short for this weight class, pointing to a very compact, powerfully built construction rather than a long load bed stretched out over the chassis.
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At a kerb weight of 2,630 kg, the payload works out to 9,870 kg, almost four times the trailer's own weight. The spacing within the axle group is only 1,380 mm, close together for such a heavy trailer, which combined with the short overall length points to a tightly packed, robust axle assembly beneath a short, low-slung body built for concentrated loads.
Class O4 requires compressed-air brakes throughout. Such a compact, heavy build on a short length is typical of trailers carrying concentrated, heavy loads such as construction machinery, containers or dense bulk material, without needing much standing space on site to manoeuvre.
When buying used with a build like this, the tightly packed axle group matters most: wheel bearings, brakes and the mounting points on the short frame are put under heavy strain by the concentrated load and should be checked for wear and cracks. The air-brake system, including its lines, also belongs in a thorough inspection before purchase.
Sources: SpecCodex-Register: Kennwerte des Modells Kompenhans KHM 9113
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