In wind turbines, the rotor shaft arrangement is of central importance. This is where all the forces and moments act directly that are induced by the wind. The rolling bearings are subjected to highly dynamic loads and operating conditions. In partnership with customers, the Schaeffler Group engineers develop the most efficient bearing arrangement for each case.
Shaft bearing arrangement
The classical, repeatedly proven solution consists of a locating/floating bearing arrangement with spherical, cylindrical or tapered roller bearings.
Hub bearing arrangement
The adjusted bearing arrangement contains two tapered roller bearings. The alternative locating/floating arrangement comprises a matched tapered roller bearing and cylindrical roller bearing.
Single bearing concepts
These designs combine the force and moment support functions in a multi-row rolling bearing. The design as a double row tapered roller bearing is matched to the operating conditions. This also applies to the dimensions; large bearings can be over 400 mm wide and over 3 000 mm in outside diameter.
Rotor bearing housings
Bearing housings calculated using state of the art methods ensure the best possible support of forces and moments with optimum dimensioning. In almost all cases, development is undertaken for specific customer requirements and the housings are matched to the bearings used.