Rolling bearing, in particular for a declutch thrust device

Patent metadata

Field	Value
Publication number	US-9638255-B2
Application number	US-201514695869-A
Country	US
Kind code	B2
Filing date	Apr 24, 2015
Priority date	Apr 25, 2014
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

A rolling bearing includes an inner race, an outer race, a row of rolling elements disposed between the inner and outer races, and a first seal fixed to one of the inner and outer races. The first seal includes at least one sealing lip cooperating with the other of the inner and outer races. The rolling bearing further includes a second seal fixed to the other of the inner and outer races. The first seal includes at least one sealing lip cooperating with the first seal.

First claim

The invention claimed is:

1. A rolling bearing including:
an inner race;
an outer race;
at least one row of rolling element disposed between the races;
at least one first seal fixed to one of the races and including at least one sealing lip cooperating with the other race; and
at least one second seal fixed to the other race and including at least one sealing lip cooperating with the first seal,
wherein the sealing lip of the first seal cooperates with a first portion of the other race, the second seal being fixed to a second portion of the other race that is separate from the first portion and situated axially facing the first seal.

2. The rolling bearing according to claim 1 , wherein the second seal is situated axially on the side opposite the rolling elements and the race relative to the first seal.

3. The rolling bearing according to claim 1 , wherein the first seal further includes a flange on which the sealing lip of the seal is disposed, the sealing lip of the second seal cooperating with the flange of the first seal.

4. The rolling bearing according to claim 3 , wherein the flange of the first seal includes one of a radial or substantially radial portion extending in a direction of the other race, the sealing lip of the second seal cooperating with the portion of the flange of the first seal.

5. The rolling bearing according to claim 1 , wherein the sealing lip of the second seal cooperates by friction with the first seal.

6. The rolling bearing according to claim 5 , wherein the sealing lip of the second seal is mounted one of axially or radially in contact against the first seal.

7. The rolling bearing according to claim 1 , wherein the second seal is provided with a flexible gasket including the sealing lip and a rigid reinforcing insert covered at least in part by the flexible gasket.

8. The rolling bearing according to claim 1 , wherein the sealing lip of the second seal includes at least one wave.

9. The rolling bearing according to claim 1 , further including an additional seal fixed to one of the races and including at least one sealing lip cooperating with the other race and disposed axially on the side opposite the first and second seals relative to the rolling elements.

10. The rolling bearing according to claim 9 , further including a self-centering sleeve mounted in the bore of the inner race and including the additional seal.

11. The rolling bearing according to claim 1 , wherein the rolling bearing is integrated into a clutch release bearing device.

12. A rolling bearing including:
an inner race;
an outer race;
at least one row of rolling element disposed between the races;
at least one first seal fixed to one of the races and including at least one sealing lip cooperating with the other race; and
at least one second seal fixed to the other race and including at least one sealing lip cooperating with the first seal,
wherein a bore of the second seal includes a plurality of protuberances spaced from one another in a circumferential direction and each extending inside a complementary groove formed on the other race.

13. A rolling bearing including:
an inner race;
an outer race;
at least one row of rolling element disposed between the races;
at least one first seal fixed to one of the races and including at least one sealing lip cooperating with the other race; and
at least one second seal fixed to the other race and including at least one sealing lip cooperating with the first seal,
wherein the other race further comprising at least one radial lug delimiting a stop surface against which the second seal is mounted to bear axially.

Assignees

• Arnault Benoit
• Baudez Eric
• Chollet Mickael
• Walter Philippe
• Skf Ab

Inventors

• Arnault Benoit
• Baudez Eric
• Chollet Mickael
• Walter Philippe

Classifications

• F16C33/7883

  mounted to the inner race and of generally L-shape, the two sealing rings defining a sealing with box-shaped cross-section · CPC title

• F16C33/7896 Primary

  with two or more discrete sealings arranged in series · CPC title

• F16D2300/08

  Details or arrangements of sealings not provided for in group F16D3/84 · CPC title

• F16C2361/43

  Clutches, e.g. disengaging bearing · CPC title

• F16C33/7866

  with sealing lips · CPC title