The insert bearing is actually a variant of the deep groove ball bearing, which is characterized by the spherical surface of the outer diameter of the outer ring, and can be matched into the corresponding concave sphere of the bearing seat to play the role of aligning. The insert bearing is mainly used to bear the radial and axial combined load based on the radial load, and it is generally not suitable to bear the axial load alone. The code name is: UC200 series (light series), UC300 series (heavy series), and deformation product UB(SB)200 series bearings, also known as insert bearings with top wire, if the use of environmental fit is relatively small, usually choose UC200 series, otherwise choose UC300 series. Usually, the top silk on the insert bearing is two, and its Angle is 120°, which is characterized by using the top wire to top the shaft when cooperating with the shaft, and then playing a fixed effect, but the environmental needs of its cooperation are necessary to oscillate on a small scale. This kind of inseart bearing is widely used in textile machinery, ceramic machinery and other production industries.