Self-aligning ball bearing has two rows of spherical rollers, 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.

The self-aligning ball bearing was invented by SKF. It has two rows of balls and a common concave sphered raceway in the outer ring. The bearing is consequently self-aligning and insensitive to angular misalignments of the shaft relative to the housing. It is particularly suitable for applications where considerable shaft deflections or misalignment are to be expected. Additionally, the self-aligning ball bearing has the lowest friction of all rolling bearings, which enables it to run cooler even at high speeds.

Self-aligning ball bearing

1) Bearing series: 1200 series, 1300 series, 2200 series, 2300 series
2) Material of rings and balls : chrome steel; GCr15 and GCr15SiMn
3) Material of cage: steel cage ,nylon cage ,or brass cage
4) Precision: P0, P6,p5
5) Suffixes:
a) "K", ID of bearing with tapered ,the taper is 1:12 E.G. :1205K
b) "H", adapter sleeves.The combined unit is for K series bearnigs. E.G. 1205KH
c) CTN1: nylon cage
6) Typical applications: the electrical household, electrical tools and machine

Self-aligning ball bearing outer ring raceway is processed into spherical shape, the inner raceway with two double row deep groove ball bearings, aligning performance. It is mainly used to bear radial load, radial load at the same time, it can withstand a small amount of axial load, but generally can not bear the pure axial load, the speed limit lower than the deep groove ball bearings. This kind of bearings are used for the load prone to bending under the double bearing shaft, and dual bearings coaxial holes can not guarantee that the parts in the strict, but the inner ring and outer ring center line of the relative steepness of the center line of not more than 3 degrees.

Aligning ball bearing basic types 12,13,22 and 23 series of self-aligning ball bearing bore can be cylindrical or conical. Bearing bore taper 1:12 (code suffix K),-aligning ball bearings can be installed directly to the cone axis can also be installed by a tight sets to cylindrical shaft, FAG addition to providing non-aligning sealed ball bearings, can provide two End with a sealing cover the basic types of self-aligning ball bearings (code suffix 2RS).