The Deep Groove Ball Bearing is the most commonly used among rolling bearings. It has a simple structure, so it is easy to use. It is mainly used to bear the radial load. Besides, it can also carry a certain amount of the axial load when the speed is too high, and the thrust ball bearing cannot be used. Compared with other bearings of the same size, it has a small friction coefficient and a high-speed limit, but it cannot bear the impact and is unsuitable for taking a large load.