Barrel bearings are single-row, angular adjustable roller bearings. They consist of solid outer rings with a hollow spherical raceway, solid inner rings with two flanges and a cylindrical or tapered bore, as well as barrel rollers with cages. The bearings are non-separable. Barrel bearings are particularly suitable when high radial loads occur shock-like and misalignment errors need to be compensated, see compensation of angular errors. Their axial load capacity is low.