Spherical roller bearings are made for heavy-duty applications. They feature two rows of symmetrical barrel rollers which can align feely in the spherical outer ring raceway, thus compensating for shaft defelctions and misaligment of the bearing seats. Spherical roller bearings have a maximum number of long rollers with a large diameter. The close contact between the rollers and raceways yields a uniform stress distribution and a high load carrying capacity. For particularly punishing applications, e.g. where vibratory stresses have to be accommodated, we offer special spherical roller bearings with narrow dimensional tolerances and an increased radial clearance.