Accuracy class

The accuracy class or tolerance class of a rolling bearing refers to the specified tolerances for the dimensions and geometry of the bearing. These classes are important to ensure that the bearing meets the requirements of a particular application in terms of accuracy, precision and performance. The accuracy classes are often represented by abbreviations such as P0, P6, P5, P4 and P2, with P0 being the lowest and P2 the highest accuracy class. Here are typical accuracy classes for rolling bearings:

1. P0: This is the standard accuracy class and corresponds to the usual manufacturing tolerances. It is used for general applications where particularly high precision is not required.
2. P6: A higher accuracy class than P0, used for applications with slightly higher precision requirements.
3. P5: Even higher accuracy class than P6, suitable for applications with increased precision requirements, such as in the machine tool industry.
4. P4: A very high accuracy class required for applications with extreme precision requirements, such as aerospace applications or precision measuring instruments.
5. P2: The highest accuracy class for rolling bearings, offering extremely tight tolerances and outstanding precision. It is used in high-precision applications such as high-speed lathes or optical instruments.

It is important to select the correct accuracy class according to the requirements of the application to ensure optimum performance and service life of the bearing.