The outer raceway of a self-aligning roller bearing is a spherical surface with the center point of the bearing as the center of the ball. The inner raceway has two inclined raceways with respect to the bearing line, providing excellent automatic self-aligning performance. Mainly used to withstand radial loads, it can also withstand axial loads in any direction. Suitable for large mechanical equipment such as mining, metallurgy, papermaking, and construction.