Toroidal roller bearings’ special design combines the self-adjusting features of spherical roller bearings with the possibility of the axial displacement of bearing rings typical of cylindrical roller bearings. They are able to offset a potential misalignment of inner and outer bearing rings within a range of up to 0.5° or 30 angular minutes. The even distribution of tension is a significant advantage of psl® toroidal roller bearings. The operational loads are distributed across the entire length of the rollers.
The optimum load distribution leads to low operating temperatures, lower tension in the bearing components, and to reduced vibrations and, thus, a maximum service life duration.
Toroidal roller bearings are particularly suited to applications with high radial loads or excessive shaft deflection, and, as already mentioned, in cases of misaligned bearing rings. They were developed primarily as main bearings for multi megawatt wind turbines.