Sealing device for bearing unit
AssigneeAktiebolaget Skf
InventorDaniele Duch
Life of this patent
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Abstract
A sealing device for a bearing unit, having a stationary part, which is in turn provided with a first metal screen, an elastomer coating co-moulded on to the first screen, and a radially inner contact lip belonging to the elastomer coating, and a rotatable part provided with a second metal screen with which the contact lip makes a sliding contact, the sealing device being provided with at least one appendage which faces a radially inner flanged ring of the bearing unit and interacts with this flanged ring to form a barrier against the entry of contaminants.
Claims9
A sealing device for a bearing unit comprising:
- a stationary part comprising:
- a first metallic screen,
- an elastomer coating, co-moulded on the first metallic screen,
- a contacting lip, wherein the contacting lip is radially internal of the first metallic screen, wherein the elastomer coating comprises the contacting lip;
- and
- a rotatable part provided with a second metallic screen on which the contacting lip makes a sliding contact;
- wherein the stationary part further comprises at least one appendage extending towards a flanged portion of the rotatable part and cooperates with the flanged portion to create a barrier against the entry of contaminants within the sealing device;
- wherein the at least one appendage is made of an elastomer, wherein the at least one appendage is part of the elastomer coating, and wherein the at least one appendage comprises a radially outer and axially outer portion of the elastomer coating;
- wherein the at least one appendage comprises two radially spaced appendages.
A sealing device for a bearing unit comprising:
- a stationary part comprising:
- a first metallic screen,
- an elastomer coating, co-moulded on the first metallic screen,
- a contacting lip, wherein the contacting lip is radially internal of the first metallic screen, wherein the elastomer coating comprises the contacting lip;
- and
- a rotatable part provided with a second metallic screen on which the contacting lip makes a sliding contact;
- wherein the stationary part further comprises at least one appendage extending towards a flanged portion of the rotatable part and cooperates with the flanged portion to create a barrier against the entry of contaminants within the sealing device;
- wherein a radially outer end of the additional elastomer coating extends radially towards a cylindrical portion of the elastomer coating.
A sealing device for a bearing unit comprising:
- a stationary part comprising:
- a first metallic screen,
- an elastomer coating, co-moulded on the first metallic screen,
- a contacting lip, wherein the contacting lip is radially internal of the first metallic screen, wherein the elastomer coating comprises the contacting lip;
- and
- a rotatable part provided with a second metallic screen on which the contacting lip makes a sliding contact;
- wherein the stationary part further comprises at least one appendage extending towards a flanged portion of the rotatable part and cooperates with the flanged portion to create a barrier against the entry of contaminants within the sealing device;
- wherein a radially external end of the additional elastomer coating faces a cylindrical portion of the first screen.
Dependencies are inferred from the claim text.