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2 models in this series
Svan CHTP18 17.5: a heavy EU class O4 trailer from 2008 with an 18,000 kg gross weight, a 2.50 m width and no further dimensions listed in the register
The CHTP18 17.5 from Svan is a trailer built in 2008. With a gross weight of 18,000 kg it falls into EU trailer class O4, the heavy trailers above 10 tonnes towed behind tractor units in freight and heavy haulage. At 2.50 metres wide, the trailer sits at the upper limit of vehicle width allowed without a special permit.
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An unladen weight of 3,980 kg leaves a payload of 14,020 kg against the 18,000 kg gross weight, a high share for this size class. Such a comparatively light chassis carrying so much payload points to a build aimed at volume rather than dead weight, for instance bulk, general or containerised cargo.
Trailers in this weight class normally need air brakes because the gross weight exceeds 10 tonnes, along with a towing vehicle rated for a correspondingly high trailer weight. They are used in commercial freight, where a high payload at a reasonable unladen weight decides how economical a run is.
On a trailer with this much payload, check the frame under load first: sagging and cracking on the cross members show whether the rated payload has been respected over the years. Also check the air brake system, the condition of the side boards or tarpaulin, and look for corrosion on the lower chassis parts, which take the most wear in bulk-goods work. Checking the coupling head and the condition of the tarpaulin or side rails rounds off the inspection.
Sources: SpecCodex-Register: Kennwerte des Modells Svan CHTP18 17.5
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