Marking

Each super-precision double direction angular contact ball bearing has different markings on its rings ((fig.1):

1.BRZB trademark

2.Complete designation of the bearing

3.Date of manufacture, coded.

4.high points on the inner and outer rings

5.“V-shaped” marking (matched bearing sets only)

Either 23 series or BAR&BTR series, the bearings set will be packed together for identification along with a V-shaped mark present on the outer rings. This marking serves as an indicator for the correct mounting orientation to achieve the appropriate preload for the bearing set (as illustrated in (fig. 2).

Additionally, the deviation of the mean bore diameter from its nominal value, measured in microns, is indicated on the side face of the inner ring.