A rolling contact bearing sealing device

摘要

A rolling bearing sealing device comprises a first, truncated-cone surface (21) integral with the non-rotating race (11) of the bearing and diverging axially towards the outside of the bearing, and a second truncated-cone surface (23) parallel to the first surface (21). The second surface is integral with the rotating race (16) of the bearing. The first and second surfaces (21, 23) are spaced apart and facing each other so as to determine therebetween a gap (25) of truncated-cone shape having a length (L) and a width (w) such to resist water entering in a chamber (26) communicating with the outside when the bearing is at rest, and expel water centrifuging it out of said chamber as the bearing rotates.