Barrel roller bearings are single row, self-aligning roller bearings. They comprise an outer ring with a concave raceway, an inner ring with two ribs and a cylindrical or tapered bore as well as barrel rollers with cages.

Barrel roller bearings are suitable for compensating angular misalignments where there is skewing between the outer and inner ring. As a result of the line contact between the rolling elements and raceways, they can support very high radial loads, even if shock type loads occur. In contrast, axial load carrying capacity is low.