Deep groove ball bearing is the most frequently used type of bearing in motor. Its key is to bear the axial load, but when the axial backlash of rolling bearings is enlarged, it has the necessary characteristics of angular contact ball bearings and can bear the radial and radial coordinated load. When the rotating speed is high and the thrust ball bearing is not suitable for selection, it can also be used to bear pure radial load. Deep groove ball bearings can be widely used in motors, mainly because of their quiet performance, and other characteristics, such as low friction, small lubrication pressure and good high-speed performance. Deep groove ball bearings can bear both radial and biaxial loads. They can be used as either floating bearings or fixed bearings. It is possible to use two floating bearings (drive and non-drive) in the motor, but each floating bearing should be pre-tightened axially with a spring to reduce vibration and noise.

There are many kinds of deep groove ball bearings, which can provide products with dust-proof caps and sealing rings at both ends. Among them, iron caps or rubber caps can prevent dust from entering the inner part of the bearings. Bearing balls can be protected by lubricants and seals for life without maintenance.