选择轴承游隙时，应考虑以下几个方面：
When selecting bearing clearance, the following aspects should be considered:
1. 轴承的工作条件，如载荷、温度、转速等；
1. Working conditions of bearing, such as load, temperature, speed, etc;
2. 对轴承使用性能的要求（旋转精度、摩擦力矩、振动、噪声）；
2. Requirements for service performance of bearing (rotation accuracy, friction moment, vibration and noise);
3. 轴承与轴和外壳孔为过盈配合时导致轴承游隙减小；
3. When the bearing and the shaft and the shell hole are interference fit, the bearing clearance will be reduced;
4. 轴承工作时，内外套圈的温度差导致轴承游隙减小；
4. When the bearing is working, the temperature difference between the inner and outer rings will reduce the bearing clearance;
5. 因轴和外壳材料的膨胀系数不同，导致轴承游隙减小或增大。
5. Due to the different expansion coefficient of shaft and shell material, the bearing clearance decreases or increases.