Tapered roller bearings consist of solid outer and inner rings with tapered raceways and tapered rollers with cages. The bearings are not self-holding, allowing the inner ring with the rollers and cage to be installed separately from the outer ring. Tapered roller bearings can handle high radial and one-sided axial loads. A second bearing is usually required for axial counter-support, which is then arranged symmetrically. The different versions are indicated by so-called suffixes: A = modified internal design, B = increased pressure angle, X = outer dimensions adapted to international standards, P5 = tolerance class.