Cuppers SO 12-27

The register lists here 15 versions with unladen weights from 4,060 to 12,960 kg and gross weights from 8,000 to 42,000 kg, at lengths from 8,630 to 14,100 mm and widths from 2,380 to 2,600 mm.

The SO range thus sits in classes O3/O4 of semi-trailers for agricultural and construction haulage, towed behind tractor units for feed, grain or building material in bulk transport. Depending on the version, pneumatic or mechanical unloading systems are fitted; the vehicles are common above all in agricultural haulage and with building-material merchants. Such combinations often run on fixed routes between farm or silo and customer, which simplifies route planning.

On a used example, the tightness and corrosion of the tank or silo vessel, the condition of the unloading gear such as blower, auger or compressor, the braking system and axles, kingpin and landing legs, and rust on the chassis count; on feed transport also the interior cleanliness of the vessel. Spare parts run through the Cuppers dealer network and the open trade.