Hapert Other models

With an unladen weight of 1,805 kg, payload comes to 3,595 kg, a moderate share of the gross weight that leaves room for a sturdy loading platform. At 7.35 m long, 2.32 m wide, with a 3.69 m wheelbase and four wheels, the trailer sits on a mid-sized two-axle chassis, typical for machinery and vehicle transporters in this weight class.

Air brakes are usual in class O3, though lighter versions of this class can still be built with a reinforced overrun brake. Towing it as a combination requires driving licence category BE or C1E in the EU, depending on the combined train weight. Its 2.32 m width, narrower than the permitted 2.55 m, points to a load platform designed for specific cargo such as vehicles or narrow machinery rather than for general bulk goods.

When buying a used unit, check the overrun brake and brake lines: wear on the overrun brake damper and corrosion on the brake linkage are common on trailers of this weight class. Check the ramps or loading rails for deformation, listen to the axle bearings for play, inspect the load platform surface for sagging and corrosion, and test the coupling head for play at the drawbar.