Bauer ATU4-40S – specifications

The register lists 4 versions with kerb weights from 640 to 16,400 kg, gross weights from 2,400 to 40,000 kg, lengths from 5,250 to 13,730 mm and widths from 1,840 to 2,550 mm. The wide range shows a line-up from a light trailer to a three-axle low-loader for construction machinery.

With gross weights from 2,400 to 40,000 kg, the range spans from EU trailer category O2 to close to the upper limit of category O4; the braking technology changes accordingly, from an overrun brake on the light models to an air brake system on the low-loaders, which additionally require a tractor unit with licence category CE. On the hydraulically lowered low-loaders, the frame in its lowered position carries most of the load directly above the axles rather than spread across the whole deck.

The ATU-series low-loaders carry excavators, dozers and other construction equipment and are common in the used agricultural and construction-machinery trade, while the lighter versions are aimed at smaller loads and equipment. This spread under one brand is typical of manufacturers offering both standard and heavy-duty chassis.

When buying a used low-loader, check the condition of the chassis, the operation of the hydraulic ramps and axle steering, the brakes and tyres; on the lighter versions, check the chassis, overrun brake and lighting. Parts for axles, brakes and hydraulics are available through the general agricultural-machinery and trailer trade.