Spherical ball bearings can be divided into three categories according to the way they fit with the shaft:

 

External spherical ball bearing with jacking wire

 

Its code name is :UC200 series (light series), UC300 series (heavy series), and deformation products UB(SB)200 series, if the use of the environment is smaller, generally choose UC200 series, otherwise choose UC300 series.

 

Generally, there are two jacking wires on the outer spherical ball bearing, and the Angle is 120°. Its characteristic is that the jacking wire is used to jacking the shaft when cooperating with the shaft, so as to play a fixed role. However, the matching environment requires that the vibration range is small.

 

This kind of outer spherical ball bearing is more common, widely used in textile machinery, ceramic machinery and other manufacturing industries.

 

External spherical ball bearing with taper

 

Its code name is :UK200 series, UK300 series. The inner diameter of this kind of outer spherical ball bearing is 1:12 ratio taper inner hole, which should be used with the tight sleeve. The characteristics of this kind of outer spherical ball bearing are:

 

Can bear more load than the outer spherical ball bearing with top wire.

 

Because the inner diameter of the same type of tight sleeve matched with it is smaller than that of the outer spherical ball bearing with a jacking wire, for example, the inner diameter of the outer spherical ball bearing UC209 with a jacking wire is 45mm.

 

The diameter of the shaft used with it is 45mm, and if it is replaced with an outer spherical ball bearing with taper, only the tight sleeve with an inner diameter of 45mm can be selected.

 

And with 45mm tight sleeve with taper external spherical ball bearing only UK210 (of course, if the load is higher, you can choose UK310).

 

Therefore, the load on the UK210 should be much greater than that on the UC209.