What factors are related to the limit speed of four-point contact ball bearing?

1. Bearing structure
Contact angle: The contact angle design of a four-point contact ball bearing will affect its load-bearing capacity and speed performance. Different contact angles are suitable for different working conditions, and reasonable contact angle design can increase the limit speed of the bearing.
Material: The material selection of the bearing also has a significant impact on its limiting speed. High-quality materials have better wear resistance, heat resistance and fatigue resistance, allowing them to withstand higher rotational speeds.
2. Lubrication method
The lubrication method directly affects the friction coefficient and temperature rise of the bearing. The use of efficient lubrication methods such as oil-gas or oil mist lubrication can significantly reduce friction heat during bearing operation and increase the limit speed. In addition, adequate lubrication can effectively reduce bearing wear and extend service life.
3. Bearing load
The limiting speed of the bearing is measured under certain load conditions. The size, type and direction of the load will affect the rotational speed performance of the bearing. Excessive load will cause the bearing heat to increase, thereby reducing the limit speed.
4. Bearing clearance
The size of bearing clearance also has a certain impact on the limit speed. Reasonable clearance design can ensure that the bearing maintains a stable operating state during operation and avoids vibration and noise problems caused by too large or too small clearance. At the same time, appropriate clearance can also improve the bearing capacity and speed performance.
5. Cooling conditions
The cooling conditions around the bearing also have a certain impact on the limit speed. Good cooling conditions can effectively reduce the temperature of the bearing during operation, thereby increasing the limit speed. In high-speed operation situations, it is usually necessary to consider using an external cooling device to reduce the bearing temperature.
6. Bearing accuracy
The manufacturing accuracy and installation accuracy of the bearing will also affect its limit speed. High-precision bearings have better operating stability and load-bearing capacity, and can maintain normal operation at higher speeds.