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Sealing device for a flanged bearing for a wheel hub in which the flanged ends (13) of the outer race (11) have the metallic rings (14) of a sealing device (15) pressed on to their internal surfaces; each metallic ring (14) incorporates a rubber element (16) which is suitable for forming a static se

Sealing device for a flanged bearing for a wheel hub in which the flanged ends (13) of the outer race (11) have the metallic rings (14) of a sealing device (15) pressed on to their internal surfaces; each metallic ring (14) incorporates a rubber element (16) which is suitable for forming a static seal on the outer race of the bearing; the rubber element (16) extends towards the inner race (10) of the bearing (12) to then bend back towards the outside of the bearing itself with an appendix (17), which forms two seals (18 and 19) on the internal surface of a second metallic ring (20); the latter is pressed on to the external surface of the inner race (10) of the bearing; a rubber element (21) is applied to the ring (20) in correspondence with its free end (22) which is axially turned towards the inside of the device; the rubber element (22) presents at least two lips (24 and 25), one of which creates a dynamic seal between the two races (10 and 11) of the bearing together with the above-mentioned lips (24 and 25) of the metallic ring (14), while the second lip (25) creates a static seal of the ring (20) against the surface (23) of the inner race (10) of the bearing which it faces.

대표청구항 ▼

1. Sealing device for a flanged bearing in which flanged ends (13) of an outer race (11) of a bearing have, pressed on internal surfaces, first metallic rings (14) of a sealing device (15); each first metallic ring (14) incorporating a first rubber element (16) which is suitable for forming a static

1. Sealing device for a flanged bearing in which flanged ends (13) of an outer race (11) of a bearing have, pressed on internal surfaces, first metallic rings (14) of a sealing device (15); each first metallic ring (14) incorporating a first rubber element (16) which is suitable for forming a static seal on the outer race (11) of the bearing; the first rubber element (16) extending towards an inner race (10) of the bearing (12) and then bending back towards an outside of the bearing with an appendix (17), which forms two seals (18 and 19) on an internal surface of a second metallic ring (20); the second metallic ring (20) pressed onto an external surface of the inner race (10) of the bearing; the device comprising a second rubber element (21) that is applied to the second metallic ring (20) in correspondence to a free end (22) of the second metallic ring (20) which is axially turned towards an inside of the device; the second rubber element (21) including at least first and second lips (24 and 25), the first lip forming a dynamic seal between the two races (10 and 11) of the bearing together with the two seals (18 and 19) of the first metallic ring (14), while the second lip (25) forms a static seal of the second metallic ring (20) against the external surface (23) of the inner race (10) of the bearing, the second lip (25) being positioned adjacent to a mouth of a channel (26) which is defined between the said external surface (23) of the inner race (10) of the bearing and surfaces of the first and second metallic rings (14 and 20) which face each other; wherein, in addition to the second lip (25), there is a third lip (28) inside the second lip (25).