This type of bearing has two columns of ball bearing outer ring, have a common concave spherical groove type. So bearing is self-aligning, from shaft bearing the relative to the box in the wrong influence. It is especially applicable to those who may generate a large axis of the bearing or are not bending applications. In addition, self-aligning ball bearings in all the rolling bearing, friction in the lowest it even in high speed can also keep low temperature.
The ball rings and nominal contact Angle and greater than 0 °, less than 90 ° rolling bearings. But both radial load and axial load.