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Thiele SKO 16/12,7: heavy EU class O4 trailer with a 22,000 kg gross weight, 13,050 mm length, 13,200 kg unladen weight and 8,800 kg payload
The SKO 16/12,7 belongs to the group of heavy trailers for road freight and was built in 1986. With a gross weight of 22,000 kg the vehicle sits in EU trailer class O4, the group of heavy trailers and semi-trailers above 10 tonnes. The build year in the 1980s alone points to a robust, simple design typical of long-lived commercial vehicles from that era.
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Empty, the trailer weighs 13,200 kg, giving a payload of 8,800 kg at a gross weight of 22,000 kg. The unladen weight thus makes up more than half of the permitted gross weight, indicating a sturdy, heavily built structure. At 13,050 mm long, 2,540 mm wide and with an 8,460 mm wheelbase, the SKO 16/12,7 is a long vehicle with widely spaced axles.
As an O4-class vehicle, the trailer carries a dual-line compressed-air braking system, mandatory from class O3 upward. The high unladen weight relative to the payload points to a reinforced frame, of the kind used for hauling goods that load the structure unevenly, in service for decades.
When buying a trailer nearly forty years old secondhand, the frame check comes first: the side members and cross braces should be examined for corrosion, cracks and earlier repair welds. Given its age, the air braking system, its lines and coupling heads need a particularly thorough leak check, as do the wheel bearings and the suspension of the widely spaced axles.
Sources: SpecCodex-Register: Kennwerte des Modells Thiele SKO 16/12,7
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