Abstract:
Self-aligning ball bearing has two rows of spherical balls, the outer race is provided with a common concave spherical raceway, while the inner race is provided with two concave spherical raceways that form an angle with the bearing axis.

Self-aligning ball bearings are suitable for applications where misalignment can arise from errors in mounting or shaft deflection. The steel balls, cage, and inner ring can rotate freely at a certain angle, as it is stated that the bearings have self-aligning features. Accordingly, misalignment of the bearing shaft due to the machining and installation of the shaft and housing will be automatically adjusted.

Physical characteristics of self-aligning ball bearings
•The self-aligning ball bearing has two rows of balls.
•A common concave sphered raceway in the outer ring.
•The center of whose curvature meets that of the bearing it, so that the inner ring, balls and cage continue to rotate.
•The self-aligning ball bearing with a tapered bore can easily be fit to the shaft with an adapter assembly.

Advantages of self-aligning ball bearings
•Have the lowest friction of all rolling bearings.
•Run cooler even at high speeds.
•Easy mounting and dismounting.
•The permissible operating speed is not dependent on the common criteria like heat generation or cage stability and strength.

Applications of self-aligning ball bearings
•Self-aligning ball bearings are used for commercial ground shafting applications.
•Since axial load capacity is limited, self-aligning ball bearings are not suitable for applications with heavy axial loads.
•Furthermore, if an adapter is used on the tapered bore of the inner diameter, installation and disassembly are much simpler and for this reason adapters are often used on equipment with drive shafts.

Introduction
Self-aligning ball bearing is round balls in two races that inner ring and outer ring whose race is spherical.

Application feilds
Precision instruments, low noise motors, automobiles, motorcycles, metallurgy, mill, mining, petroleum, paper making, cement, sugar and so on.