Engen Os Other models
2 models in this series
Engen Os 3SL-300-LL – EU class O4 trailer: 28,000 kg gross vehicle weight, 5,790 kg unladen weight, 2,550 mm wide, built 2013
With a gross vehicle weight of 28,000 kg, the Engen Os 3SL-300-LL falls into EU trailer class O4, the heavy trailers and semi-trailers above 10 tonnes hauled in heavy-goods transport with their own air brake system behind trucks or tractor units. Vehicles of this weight class carry their load across several axles and need a correspondingly load-bearing chassis.
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The 3SL-300-LL was built in 2013 and has an unladen weight of 5,790 kg; against a gross vehicle weight of 28,000 kg, that leaves a payload of 22,210 kg. Width is 2,550 mm.
Trailers of this size carry the actual load volume in road haulage, while the towing vehicle supplies drive and steering. From class O3 upward, the EU requires a dedicated air brake system with sound lines and working brake cylinders on every axle so that braking takes hold reliably along the whole length of the vehicle. A trailer of this weight class is towed by a truck, not a car.
When buying used, an air-braked trailer of this size lives or dies on the brake system: check lines, brake cylinders and linings on every axle for corrosion, leaks and wear. Inspect the chassis and frame for rust and cracks, along with axle bearings, suspension, tyres and tread depth, lighting, and the coupling to the towing vehicle. With a build year of 2013, also check the condition of brake lines and axle suspension after many years in service.
Sources: SpecCodex-Register: Kennwerte des Modells Engen Os 3SL-300-LL
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Trailer in 3D section
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