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

The preload of deep groove ball bearings refers to the load artificially imposed on the bearing by adjusting the gap or interference between the inner and outer rings of the bearing when the bearing is installed. This preload setting has a profound impact on the performance of the bearing. It is not only related to the service life of the bearing, but also affects the stability and reliability of the entire mechanical system.

Preload can significantly increase the rigidity of the bearing. In mechanical systems, the rigidity of bearings is an important factor in ensuring mechanical accuracy. By applying appropriate preload, the deformation of the bearing when bearing load can be reduced, thereby improving the accuracy and stability of the entire mechanical system. Preload helps reduce vibration and noise during bearing operation. During the operation of the bearing, vibration and noise will be generated due to the contact between the rolling elements and the raceway. Proper preload can keep the rolling elements stable in the bearing raceway, reduce vibration, and thus reduce noise.

Preload also prevents axial movement and ensures that the bearing remains in a fixed position on the shaft. In some applications, bearings are required to support axial loads. Appropriate preload can prevent the bearing from moving in the axial direction and ensure the stability of the mechanical system. The internal clearance of the bearing is one of the important factors affecting the performance of the bearing. Proper preload can reduce the internal clearance of the bearing and improve the performance of the bearing.