Self-aligning roller bearings feature a large number of rollers and a long contact line, resulting in a radial load capacity far exceeding that of single-row bearings. The roller generatrices are specially optimized to distribute contact stress evenly and reduce stress concentration at the edges, providing excellent self-aligning performance. They are particularly suitable for operation under heavy or vibrating loads.

Self-aligning roller bearings feature two rows of rollers. They primarily support radial loads but can also accommodate axial loads in either direction. With high radial load capacity, they are particularly suitable for operation under heavy or vibrating loads; however, they cannot support pure axial loads. The outer ring raceway of this type of bearing is spherical, providing excellent self-aligning capability and the ability to compensate for misalignment. They feature two rows of symmetrical spherical rollers, with a single shared spherical raceway on the outer ring and two raceways on the inner ring that are inclined at an angle to the bearing axis, providing excellent self-aligning capabilities. This type of bearing has a high load capacity; in addition to radial loads, it can withstand axial loads acting in both directions and has good shock resistance. Self-aligning roller bearings are designed for high radial loads or even environments involving eccentricity, inadequate lubrication, contaminants, extremely high speeds, or extreme stresses. They are particularly suitable for operation under heavy or vibrating loads.

They are widely used in wind turbines, mining equipment (crushers, vibrating screens, belt conveyors, etc.), gear reducers, air preheaters, extruders, centrifuges, construction machinery, steel equipment, paper-making machinery, industrial transmissions, metallurgy, and marine applications.