External spherical ball bearings can be divided into three categories according to the cooperation method with the shaft:

First, with the top wire outer spherical ball bearing code: UC200 series (light series), UC300 series (heavy series), and deformation product UB(SB)200 series, if the use of environment fit is small, usually choose UC200 series, on the other hand, choose UC300 series. Usually, the top wire on the outer spherical ball bearing has two, with an Angle of 120°. Its characteristic is that when cooperating with the shaft, the top wire is used to top the shaft, and then the fixed effect is played. However, the environment of cooperation requires small oscillation scale. This kind of outer spherical ball bearing is widely used in textile machinery, ceramic machinery and other manufacturing industries.

Two, with taper external spherical ball bearings, the code is: UK200 series, UK300 series. The inner diameter of this kind of outer spherical ball bearing is 1:12 share taper inner hole, which should be used in cooperation with the fixed sleeve. The characteristic of this kind of outer spherical ball bearing is that it can accept greater load than the outer spherical ball bearing with top wire. For example, the inner diameter of UC209 spherical ball bearing with top wire is 45mm, and the diameter of the shaft used in cooperation with UC209 is 45mm. If the outer spherical ball bearing with taper is replaced, only the fixed sleeve with an inner diameter of 45mm can be selected. And the cooperation with 45mm tight set of external spherical ball bearings with taper only HAVE UK210 (of course, if the fit is higher, you can choose UK310). As a result, the fit received by THE UK210 should be much greater than that received by the UC209.

Three, with eccentric sleeve outer spherical ball bearing code name :UEL200 series, UEL300 series, SA200 series. The main feature of this kind of outer spherical ball bearing is that the upper end of the bearing has a certain degree of bias, and the bias sleeve with the same degree of bias cooperates with it. This kind of bearing can also be said to be special bearing, because it is mainly used in agricultural machinery (cutting machine, straw returning machine, threshing machine, etc.), this kind of external spherical ball bearing is mainly used in the layout with strong beat, and the cooperation of biased layout can be useful to reduce strong beat