Extension member for a flinger of a bearing
A bearing is disclosed comprising an inner ring concentrically disposed with an outer ring with rotational elements therebetween adapted for allowing rotational movement of the inner ring relative to the outer ring. A flinger may be secured to the inner ring having an extension member formed from a resilient material. The extension member may extend radially outward from the flinger along an axial side of the bearing and engages a portion of a side face of the outer ring during operation of the bearing.
1. A bearing comprising:
an inner ring concentrically disposed with an outer ring with rotational elements therebetween adapted for allowing rotational movement of the inner ring relative to the outer ring;
a seal sealing a space between the outer ring and inner ring; and
a flinger comprising a substantially rigid disk-like member secured to one of the inner ring and outer ring immediately adjacent to and outboard of the seal, the flinger having an outer diameter dimension sufficient to shield the seal from contaminants, the flinger having a resilient extension member mounted on its distal end, the extension member extending radially outward from the flinger along an axial side of the bearing and engaging a portion of an outer side face of the other of the inner ring and the outer ring to form together with the seal a labyrinth seal between the rings of the bearing.
2. The bearing of claim 1 , wherein the extension member has a slight interference fit with the outer ring side face.
3. The bearing of claim 1 , wherein the extension member has radial protrusions on its outer side face configured for fanning action when the inner ring rotates.
4. The bearing of claim 1 , wherein the extension member is a rubber material.
5. The bearing of claim 1 , wherein the extension member has a pocket on its inner side face configured for holding lubricant.
6. The bearing of claim 1 , wherein the extension member deflects so as to engage the portion of the side face of the other of the inner ring and the outer ring.
7. The bearing of claim 1 , wherein extension member forms a seal between the rings of the bearing when the bearing is stationary.
8. The bearing of claim 1 , wherein the extension member has stiffening struts on its inner and outer side faces.
9. The bearing of claim 1 , wherein the flinger has a hub on which the extension member is mounted.
10. A bearing comprising:
an inner ring concentrically disposed with an outer ring with rotational elements therebetween adapted for allowing rotational movement of the inner ring relative to the outer ring;
a seal sealing a space between the outer ring and inner ring; and
a flinger comprising a substantially rigid disk-like member secured to the inner ring immediately adjacent to and outboard of the seal, the flinger having an outer diameter dimension sufficient to shield the seal from contaminants, the flinger having an extension member formed from a resilient material mounted on its distal end, the extension member extending radially outward from the flinger along an axial side of the bearing and deflecting against a portion of an outer side face of the outer ring to form together with the seal a labyrinth seal between the rings of the bearing.
11. The bearing of claim 10 , wherein the extension member has a slight interference fit with the outer ring side face.
12. The bearing of claim 10 , wherein the extension member is formed from a rubber material.
13. The bearing of claim 10 , wherein the extension member has stiffening struts on outer side faces.
14. The bearing of claim 13 , wherein the stiffening struts form pockets on an inner side face of the extension member for holding lubricant.
15. The bearing of claim 13 , wherein the stiffening struts form radial protrusions on an outer side face of the extension member for fanning action away from the bearing.
16. The bearing of claim 13 , wherein the stiffening struts are configured to deflect the extension member against the outer ring side face during operation of the bearing.
17. The bearing of claim 10 , wherein the flinger has a hub on which the extension member is mounted.
18. The bearing of claim 10 , wherein the extension member forms the seal with the side face of the outer ring.
19. The bearing of claim 10 , wherein the extension member forms the seal when the bearing is stationary.
20. The bearing of claim 10 , wherein the extension member overlays the side face of the outer ring when the bearing is not operational.
21. The bearing of claim 10 , wherein the extension member deflects against the portion of the side face of the outer ring during operation of the bearing.