Ball bearing load and structural position

- Jul 12, 2019-

The ball bearing is the outer spherical bearing we usually call. The reason why it is called the ball bearing is because it belongs to the deep groove ball bearing, and the rolling element inside is the steel ball. The spherical bearing is more convenient than the general deep groove ball bearing. Its main features are simple loading and unloading, and can be adjusted. The standard tolerance of the outer spherical ball bearing is: internal plus external reduction, and the inner diameter is adjusted to ensure the lightness when mating with the shaft.


Each of the outer spherical ball bearings of the spherical bearing is not used alone. It must be fitted to the inner part of the bearing housing. The outer spherical bearing housing has various shapes and is suitable for various structural positions when integrally matched.


Spherical bearings can be divided into three categories according to the way they are matched with the shaft.


If the environmental load is small, the UC200 series is generally selected, and vice versa. Generally, there are two top wires on the outer spherical ball bearing, and the angle is 120°. The characteristic is that when the shaft is matched, the top wire is used to top the shaft, thereby playing a fixed role, but the matching Environmental requirements must have a small range of vibration. Such outer spherical ball bearings are relatively common and are widely used in various manufacturing industries such as textile machinery and ceramic machinery.


The spherical bearing has a taper inner bore with an inner diameter of 1:12. It should be used with the adapter sleeve. The outer spherical ball bearing has the characteristics of being able to withstand a larger load than the outer spherical ball bearing. Because the inner diameter of the same type of adapter is smaller than that of the outer spherical ball bearing, for example, the outer diameter of the outer spherical ball bearing UC209 is 45mm, and the diameter of the shaft used with it is 45mm, and if If it is replaced by a tapered spherical ball bearing, only the adapter sleeve with an inner diameter of 45mm can be selected, and the tapered spherical ball bearing with the 45mm adapter sleeve is only UK210 (of course, if the load is higher, you can choose UK310). of). As a result, the load on the UK210 is much larger than that of the UC209.