Bearing bearings consist of a closed series ball bearing with a spherical outer ring mounted in a housing. Due to the bearing's spherical outer surface, shaft deviation can be compensated. Bearings are manufactured with additional tolerances. This leads to a transition or press joint when using an h tolerance shaft. The shaft is held tight by the grub screw on the inner ring.
In conventional applications, the bearing bearings do not require maintenance due to their lifetime lubrication.