The raceway of the outer ring is spherical, and the center of curvature is the same as the center of the bearing. Therefore, the inner race, the ball and the cage can rotate freely around the center of the bearing. The utility model is suitable for shafts and shells which are difficult to center, and the shafts are easy to bend. Because the contact angle is small, axial load capacity is also small. Stamping holder is used in general.

self-aligning ball bearings allow the centering angle to be approximately 0.07 to 0.12 radians (4-7 degrees) under normal load conditions. According to the bearing around the installation size, but also can not meet the special situation of the heart angle, please note.