Rolling-element bearing assembly

Patent metadata

Field	Value
Publication number	US-11655854-B2
Application number	US-202017088728-A
Country	US
Kind code	B2
Filing date	Nov 4, 2020
Priority date	Nov 11, 2019
Publication date	May 23, 2023
Grant date	May 23, 2023

Abstract

A rolling-element bearing assembly includes a first bearing ring and a second bearing ring that define a bearing interior between them, a plurality of rolling elements disposed in the bearing interior to allow a relative rotation of first and second bearing rings, and a seal assembly for sealing the bearing interior. The seal assembly includes a seal carrier that is connected to the first bearing ring such that they rotate together and a seal element that is connected to the seal carrier such that they rotate together, and the seal carrier comprises a fiber-reinforced plastic.

First claim

What is claimed is:

1. A rolling-element bearing assembly comprising:
a first bearing ring and a second bearing ring that define a bearing interior between the first bearing ring and the second bearing ring,
a plurality of rolling elements disposed in the bearing interior to allow a relative rotation of the first and second bearing rings, and
a seal assembly for sealing the bearing interior, the seal assembly including a seal carrier connected to the first bearing ring such that the seal carrier and the first bearing ring rotate together and a seal element connected to the seal carrier such that the seal element and the seal carrier rotate together, the seal carrier holding the seal element against an axial surface of the second bearing ring,
wherein the seal carrier comprises a fiber-reinforced plastic,
wherein the seal element is circumferentially attached to the seal carrier by a clamping ring,
wherein the second bearing ring is an inner bearing ring having an outer diameter and the first bearing ring is an outer bearing ring,
wherein the seal carrier is connected to the outer bearing ring and the clamping ring has a central opening having an inner diameter, and
wherein the inner diameter of the central opening of the clamping ring is less than the outer diameter of the inner bearing ring.

2. The rolling-element bearing assembly according to claim 1 , wherein fiber-reinforced plastic comprises a fiberglass-reinforced plastic.

3. The rolling-element bearing assembly according to claim 1 , wherein the seal carrier comprises a ring and wherein the fiber-reinforced plastic comprises a compression-molded fiber-matrix-composite.

4. The rolling-element bearing assembly according to claim 1 , wherein the seal carrier comprises a plurality of seal carrier segments abutting against one another.

5. The rolling-element bearing assembly according to claim 1 , wherein the seal element and/or the clamping ring include structures in order to attach the seal element to the clamping ring such that the seal element and the clamping ring rotate together.

6. The rolling-element bearing assembly according to claim 1 ,
wherein the seal element includes a primary seal lip and a secondary seal lip, and
wherein the primary seal lip and the secondary seal lip abut axially against the axial surface of the second bearing ring.

7. The rolling-element bearing assembly according to claim 6 , wherein the primary seal lip abuts against the axial surface of the second bearing ring with a predetermined contact force.

8. The rolling-element bearing assembly according to claim 6 , wherein the contact force of the primary seal lip is determined by a length of the primary seal lip, an angle of incidence of the primary seal lip with respect to the end surface, a material of the primary seal lip, a geometric design of the primary seal lip, and/or a defined distance of the seal carrier to the end surface of the second bearing ring.

9. The rolling-element bearing according to claim 1 ,
wherein the fiber-reinforced plastic comprises a compression-molded fiber-matrix-composite,
wherein the seal carrier comprises a plurality of seal carrier segments abutting against one another,
wherein the seal carrier segments include abutment surfaces having mutually complementary structures,
wherein the seal element is circumferentially attached to the seal carrier by a clamping ring,
wherein the seal element includes a primary seal lip and a secondary seal lip, and
wherein the primary seal lip and the secondary seal lip abut axially against the axial surface of the second bearing ring with a predetermined contact force.

10. The rolling-element bearing according to claim 1 ,
wherein the seal element is located entirely radially outward of the central opening.

Assignees

• Skf Ab

Inventors

• Kroeger Jan
• Lemper Peter
• Liesegang Hans-Juergen
• Schulz Klaus-Dieter

Classifications

• F16J15/3268

  Mounting of sealing rings · CPC title

• F16C33/7813 Primary

  for tapered roller bearings · CPC title

• F16C33/7826

  of the opposing surface cooperating with the seal, e.g. a shoulder surface of a bearing ring · CPC title

• F16C19/386 Primary

  in O-arrangement · CPC title

• F16C2208/04

  Glass fibres · CPC title