What is the normal speed range for ball bearings and roller bearings?

The normal speed range for ball bearings and roller bearings typically falls between 2000 to 20,000 RPM. Ball bearings are designed to handle higher speeds due to their geometry and the rolling motion they employ, which reduces friction compared to sliding motion. They are commonly used in applications such as electric motors, where high rotational speeds are needed. Roller bearings, while generally used in applications with heavier loads, can also operate effectively in this speed range, offering versatility across various machinery.

The choice reflecting this speed range aligns with engineering standards for many industrial applications, ensuring optimal performance and longevity of the bearings. Operating outside of the specified RPM can lead to increased wear, overheating, and potentially bearing failure, emphasizing the importance of adhering to these guidelines in maintenance and selection processes.