What effect does the axial preload of deep groove ball bearings have on their performance?

As a common rolling bearing, the performance of deep groove ball bearings is crucially affected by axial preload. Axial preload refers to applying a certain axial force inside the bearing to cause it to produce a predetermined axial deformation during operation, so as to improve the bearing performance. This preload method is widely used in deep groove ball bearings because it can significantly improve the stiffness and stability of the bearing.

Proper axial preload can improve the performance of many aspects of the bearing. It can increase the stiffness of the bearing and make it more stable when bearing external loads. The axial preload inside the deep groove ball bearing can effectively reduce the deformation and looseness of the bearing during operation, thus improving its overall rigidity. This is particularly important for applications that need to operate under high-speed rotation or high load conditions, such as machine tools, automotive transmission systems, etc.

Clearance refers to the gap between the rolling elements and the track inside the bearing. It is an inevitable phenomenon during the working process of the bearing. By applying axial preload, the clearance can be effectively reduced, making the bearing more rigid and stable when carrying loads. This helps reduce the swing and instability of the bearing during operation and improves its load-bearing capacity and durability.

Proper axial preload can also improve the working accuracy and shock resistance of the bearing. By reducing the deformation and vibration inside the bearing, axial preload can make the bearing have better stability and accuracy during operation, thereby improving the working efficiency and reliability of the system. This is very important for applications that require high-precision operation, such as CNC machine tools, precision instruments, etc.