ANTI-FRICTION BEARING COMPRISING AN AIR PASSAGE PROVIDED WITH A SEALED LATERAL REGION

摘要

The invention relates to an anti-friction bearing comprising a rotating inner element (1), a fixed outer element (2), and rolling bodies (3) arranged between said elements in a roller region which is laterally sealed on both sides by a seal (19, 20). Said bearing also comprises: a lateral annular region (25) in front of the front seal (19), and a path forming an air passage comprising a fixed channel (23) formed in the fixed element (2) and a rotating channel (24) crossing the rotating element (1), the lateral region (25) being sealed by the front seal (19) and by a third seal (28) provided between the fixed element (2) and the rotating element (1), the fixed channel (23) comprising an upstream end running into the lateral region (25), and the rotating channel (24) comprising an upstream end which also runs into said region.