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

Deep groove ball bearings are a common type of rolling bearing in mechanical equipment, and their performance is affected by preload. Preload is a certain pressure exerted between the inner and outer rings when installing the bearing. The purpose is to keep the rolling elements inside the bearing in a certain state of contact. The size of the preload directly affects the performance and working status of the bearing.

Proper preload can significantly improve the rigidity of deep groove ball bearings. Through preloading, the rolling elements inside the bearing are subject to a certain amount of pressure, making the bearing more resistant to deformation and more stable during operation. Especially under high-speed rotation or load-bearing conditions, appropriate preload can effectively prevent excessive deformation of the bearing and ensure its working accuracy and stability.

Within the bearing, axial clearance may cause the rolling elements to become unstable during operation, affecting the accuracy and reliability of the bearing. Through proper preload, axial clearance is reduced, thereby improving the working condition of the bearing and increasing its operating efficiency under high load and high speed conditions.

Proper preload also helps reduce vibration and noise generated by the bearing during operation. Vibration and noise are common problems during bearing operation. They not only affect the stability and comfort of the equipment, but may also have an adverse impact on the service life and safety of the equipment. By controlling the preload, the friction and vibration of rolling elements during work can be effectively reduced, thereby reducing the generation of vibration and noise and improving the overall operating quality of the equipment.

Adjustment of preload can also improve the load-bearing capacity of deep groove ball bearings. With proper preload, the contact area between the rolling elements inside the bearing is increased, thereby improving the bearing's load-bearing capacity and durability. This is especially important for some equipment that needs to withstand high loads and operate for a long time, such as industrial production lines and large mechanical equipment.