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Birrer SMB 35: the only trailer of this brand outside the named ranges, model year 2017, 38,000 kg gross weight, 7,500 kg unladen weight
Birrer is a Swiss manufacturer of transport equipment for agriculture and forestry. This page carries the brand's only trailer model that the register did not assign to a named range: the SMB 35 from 2017.
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The SMB 35 has a gross weight of 38,000 kg against an unladen weight of 7,500 kg, giving a payload of 30,500 kg. At a length of 13,800 mm, an axle spacing of 9,850 mm and a width of 2,550 mm, it stands on three axles, a long, light chassis with a high payload, as required for hauling bulk goods or long goods such as round timber.
With a gross weight of 38,000 kg, the SMB 35 falls into EU category O4, where an air brake system is standard. At a length of almost 14 metres and with three axles, the trailer suits the transport of long loads that would overhang a shorter chassis, such as tree trunks or long material in commercial haulage.
On a used three-axle trailer of this size, what counts is the condition of the air brake system along with its lines and brake cylinders on all three axles, rust on the frame and chassis rails over the full length, the state of the stakes or side boards, and even wheel loading across all axles. In round-timber haulage, it is also worth checking the load-bed fittings for wear from point loading, as well as the condition of the stanchion pockets that hold the stakes upright.
Sources: SpecCodex-Register: Kennwerte des Modells SMB 35
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