There are two types of structures for self-aligning ball bearings: cylindrical hole and conical hole. The material of the retainer includes steel plate, synthetic resin, etc. Its characteristic is that the outer ring raceway is spherical in shape and has automatic centering, which can compensate for errors caused by different centricity and shaft deflection, but the relative inclination of the inner and outer rings should not exceed 3 degrees.

Self aligning ball bearings are suitable for bearing heavy loads and impact loads, precision instruments, low-noise motors, automobiles, motorcycles, metallurgy, rolling mills, mines, petroleum, papermaking, cement, sugar squeezing and other industries, as well as general machinery.