Sele-aligning ball bearing is a double row ball bearing, usually by the spherical raceway of the outer ring, with two deep groove raceway of the inner ring, ball, etc., with the function of aligning. It is mainly used in conditions that require radial load, and can also withstand a certain amount of axial load, but usually cannot withstand pure axial load, and the limit speed is lower than that of deep groove ball bearings. The inner hole of the aligning ball bearing is usually cylindrical or conical; There are 12, 13, 22 and 23 series. Self-aligning ball bearings with an inner hole taper of 1:12 are usually mounted directly to the conical shaft, whose suffix code is K. Self-aligning ball bearings with cylindrical holes are usually made of ordinary groups. The radial clearance of Self-aligning ball bearings with tapered holes is usually group C3.Self- aligning ball bearings are usually sealed by contact sealing with sealing caps at both ends, code suffix 2RSR. Grease is also usually added to ensure service life.
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