Influence of ball size on rolling bearing

The rolling bearing is a mechanical part that can withstand the rotating shaft, and mainly relies on the rolling of the internal ball on the slide to reduce friction, so as to ensure the normal operation of the machine. So the ball size has some effect on the performance of the bearing.

1. Ball size and load distribution

The size of the ball directly affects the bearing contact area and load distribution. The large ball contact area is larger, and the load can be distributed more evenly, effectively reducing the local stress. Although the small ball contact area is small, in some high-precision instruments, small balls can bring softer movement and adapt to higher speed requirements. Therefore, choosing the right ball size according to the actual use scenario is the key to bearing life.

2. Reduce friction and wear

Friction and wear are important factors affecting bearing life. Because of the large surface area, more lubricating oil is attached to its surface, and the effect of reducing friction is significant, thus extending the life of the bearing. However, this kind of large ball also has some limitations, such as it is not suitable for small displacement and high precision occasions. The small ball has the advantage of quickly removing lubricating oil, thereby reducing friction and wear, and performing better in these situations.

3. Vibration and noise

The size of the ball also affects the running stability of the bearing. Generally speaking, the operation of large ball is more stable, the vibration and noise are smaller, and it is suitable for equipment with high requirements for low noise. However, in the case of low noise requirements, the small ball can provide higher operating efficiency.

In general, the impact of ball size on the life of rolling bearings is not only a simple geometric size problem, but also involves the comprehensive consideration of load distribution, friction control, vibration noise and other levels. The reasonable selection of the appropriate size of the ball in different application environments can significantly extend the service life of the bearing and improve the operating performance of the equipment. If you encounter relevant problems in actual work, you can consider whether the bearing is affected by the ball and find the appropriate solution.