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Dte CTD-44-04 - class O4 trailer with a gross weight of 44,000 kg, an unladen weight of 6,360 kg, a length of 10,210 mm and a wheelbase of 8,090 mm, built 2014
With a gross weight of 44,000 kg, the CTD-44-04 falls into EU trailer class O4, the heavy category of trailers and semi-trailers above 10 tonnes, as used in heavy-haul and long-distance transport behind articulated tractor units. Vehicles of this size need their own compressed-air brake system and a correspondingly strong chassis.
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The CTD-44-04 dates from 2014 and has an unladen weight of only 6,360 kg; against the gross weight of 44,000 kg that leaves an exceptionally high payload of 37,640 kg. Length is 10,210 mm, width 2,500 mm and wheelbase 8,090 mm. Such a low unladen weight combined with such a high gross weight is typical of vehicles carrying dense, compact goods rather than bulky loose cargo, such as liquids in a tank body or heavy steel sections.
In class O4, a multi-axle compressed-air brake system is mandatory, and towing requires driving licence category CE. With this ratio of unladen weight to payload, axle load distribution plays a particularly strong role in which roads and bridges may be used, and the towing vehicle's permitted towed mass must be rated for the gross weight of 44 tonnes.
When buying a trailer with such a large payload margin used, the condition of the frame and axle mounts matters especially, since the load weight can quickly concentrate on individual sections. The compressed-air brake system with its lines and coupling heads, as well as the axles and axle bearings, belong on a test rig. Exactly one example of this type is registered in the Netherlands.
Sources: SpecCodex-Register: Kennwerte des Modells Dte CTD-44-04
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