High precision angular contact ball bearings are composed of an outer-circle, inner circle, steel ball and retainer. It can not only support the radial load and axial load but also it can only sustain the axial load. Besides, it can operate stably with a relatively high speed. According to the row, the angular contact ball bearing can be classified into single row one and two-row one. Here the article will mainly introduce the single row angular contact ball bearing. The so-called single row angular contact ball bearing can only support one directional axial load. When it supports the pure radial load, it will bring about the inner axial thrust load because the action line of the roller loading is not in the same radial face with the action line of the radial load. So this bearing should be set up in pair.
At present there are several popular structure forms for the single row angular contact ball bearing. They will be introduced as follow. What comes first is separated angular contact ball bearing. The code for this bearing is S70000. There is no locking notch on the raceway of the outer-circle. So the inner circle, retainer and steel ball can be separated from it. On basis of the feature, these fittings can be installed respectively. For this structure, the inner diameter of the bearing is less than 10mm. it belongs to mini-bearing. In the common situation, the separated angular contact ball bearing is widely used in the equipments with high requirements for the dynamic balance, noisy, vibration and stability such as gyro wheel, micro motor. The next one is inseparable original angular contact ball bearings.
