Trailer Tech Other models
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Trailer Tech DF 19 L – EU class O4 trailer with a 28,000 kg gross weight, 9.25 m length and 8,520 kg unladen weight, built in 2018
The Trailer Tech DF 19 L belongs to the class of heavy trailers used to haul bulk goods, building materials or machinery in construction-site and freight transport. With a gross weight of 28,000 kg it falls into EU trailer class O4, the heavy trailers above 10 tonnes.
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With an unladen weight of 8,520 kg, payload comes to roughly 19,480 kg. Length is 9.25 m and width 2.55 m, reaching the maximum width allowed for road vehicles. At 5.28 m, the wheelbase is short relative to the overall length, pointing to a compact, manoeuvrable build despite the high payload.
Class O4 trailers run on compressed-air brakes, controlled through the towing vehicle's air line and applying automatically if the connection is severed. The compact length relative to capacity favours a tighter turning radius when manoeuvring compared with long semi-trailers of the same gross weight.
When buying used, check the condition of the air-suspension bellows, the tightness of the air lines and wear on the brake drums or discs. On the short but load-capable frame, look for distortion at the cross members, and on the axles, look for even tyre wear as a sign of sound axle geometry. It is also worth testing the lighting system and its plug connector to the towing vehicle, since contact corrosion here is a common source of faults. The condition of the mudguards and the lashing points along the frame is worth a look as well, since both take steady wear in daily use.
Sources: SpecCodex-Register: Kennwerte des Modells DF 19 L
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