Bearing seat assembly

Patent metadata

Field	Value
Publication number	US-12006979-B2
Application number	US-202117536262-A
Country	US
Kind code	B2
Filing date	Nov 29, 2021
Priority date	Jan 8, 2021
Publication date	Jun 11, 2024
Grant date	Jun 11, 2024

Abstract

A bearing seat assembly for a roller assembly includes a bearing seat; a bearing, arranged inside the bearing seat; a first seal, including at least two sealing lips. The first seal is installed on the bearing seat and is arranged on a first axial outer side of the bearing. At least one sealing lip of the at least two sealing lips of the first seal is arranged around the inner or outer circumference of the first seal. The bearing seat assembly according to the present disclosure realizes enhanced sealing, avoids re-lubrication, improves thermal performance, and prolongs service life.

First claim

The invention claimed is:

1. A bearing seat assembly for a roller assembly, comprising:
a bearing seat;
a bearing, arranged inside the bearing seat;
a first seal, including at least two sealing lips, the first seal comprising a base having a radially inner, axially extending portion and a radially outer, axially extending portion, the radially inner, axially extending portion being surrounded by a material, the material forming the at least two sealing lips which extend radially inward, the radially outer, axially extending portion having an elastic material extending along a radially outer edge of the radially outer, axially extending portion, the elastic material being configured to be compressed against the bearing seat and expand to accommodate any variation in position of the bearing seat relative to the radially outer, axially extending portion, the radially inner, axially extending portion extending axially outward
wherein, the first seal is installed on the bearing seat and arranged on a first axial outer side of the bearing,
wherein at least one sealing lip of the at least two sealing lips of the first seal is arranged around the inner circumference of the first seal.

2. The bearing seat assembly according to claim 1 , wherein when the at least one sealing lip is arranged on the inner circumference of the first seal, the at least one sealing lip directly contacts the roller assembly, or a first sealing sleeve is arranged between the at least one sealing lip and the roller assembly.

3. The bearing seat assembly according to claim 2 , wherein at least one sealing ring is in contact with the roller assembly and is arranged on an inner circumference of the first sealing sleeve.

4. The bearing seat assembly of claim 1 , wherein the at least one sealing lip of the at least two sealing lips of the first seal forms a radially innermost portion of the first seal.

5. The bearing seat assembly according to claim 1 , wherein the elastic material has a thickness of at least 0.03 mm.

6. The bearing seat assembly of claim 1 , wherein the bearing seat assembly is free of re-lubrication.

7. The bearing seat assembly according to claim 1 , further comprising a second seal, which includes at least two sealing lips and is installed on the bearing seat and arranged on a second axial outer side of the bearing;
wherein, the first axial outer side is the side close to the roller assembly, and the second axial outer side is the side away from the roller assembly; and
wherein at least one sealing lip of the at least two sealing lips of the second seal directly contacts the roller assembly, or a second sealing sleeve is arranged between at least one sealing lip of the at least two sealing lips of the second seal and the roller assembly.

8. The bearing seat assembly according to claim 1 , wherein the bearing seat assembly further comprises a shield which is located between the first seal and the roller assembly in the axial direction.

9. The bearing seat assembly according to claim 1 , wherein at least one part of the top of the bearing seat is formed in a curved shape, and a cooling channel is formed in the at least one part; and
wherein the width of at least one part of the cooling channel is at least half of the width of the bearing.

10. The bearing seat assembly according to claim 1 , wherein a first sealing sleeve is located on a radially inner side of the first seal such that the first seal is located between a bearing seat and the first sealing sleeve.

11. A bearing seat assembly for a roller assembly, comprising:
a bearing seat;
a bearing, arranged inside the bearing seat;
a first seal, including at least two sealing lips, the first seal comprising a base having a radially inner, axially extending portion and a radially outer, axially extending portion, the radially inner, axially extending portion being surrounded by a material, the material forming the at least two sealing lips which extend radially inward, the radially outer, axially extending portion having an elastic material extending along a radially outer edge of the radially outer, axially extending portion, the elastic material being configured to be compressed against the bearing seat and expand to accommodate any variation in position of the bearing seat relative to the radially outer, axially extending portion,
wherein, the first seal is installed on the bearing seat and arranged on a first axial outer side of the bearing,
wherein at least one sealing lip of the at least two sealing lips of the first seal is arranged around the inner circumference of the first seal,
wherein when the at least one sealing lip is arranged on the inner circumference of the first seal, a first sealing sleeve is arranged between the at least one sealing lip and the roller assembly, the first sealing sleeve having a metal coating.

12. The bearing seat assembly according to claim 11 , wherein the thin metal coating is made of stainless steel.

13. The bearing seat assembly of claim 11 , wherein the at least one sealing lip of the at least two sealing lips of the first seal forms a radially innermost portion of the first seal.

14. The bearing seat assembly according to claim 11 , wherein the elastic material has a thickness of at least 0.03 mm.

15. The bearing seat assembly according to claim 11 , further comprising a second seal, which includes at least two sealing lips and is installed on the bearing seat and arranged on a second axial outer side of the bearing;
wherein, the first axial outer side is the side close to the roller assembly, and the second axial outer side is the side away from the roller assembly; and
wherein at least one sealing lip of the at least two sealing lips of the second seal directly contacts the roller assembly, or a second sealing sleeve is arranged between at least one sealing lip of the at least two sealing lips of the second seal and the roller assembly.

16. The bearing seat assembly according to claim 11 , wherein the bearing seat assembly further comprises a shield which is located between the first seal and the roller assembly in the axial direction.

17. The bearing seat assembly according to claim 11 , wherein at least one sealing ring is in contact with the roller assembly and is arranged on an inner circumference of the first sealing sleeve.

18. The bearing seat assembly according to claim 11 , wherein at least one part of the top of the bearing seat is formed in a curved shape, and a cooling channel is formed in the at least one part; and
wherein the width of at least one part of the cooling channel is at least half of the width of the bearing.

Assignees

• Skf Ab

Inventors

• Mitchell Erik
• Xu Zongkang
• Cao Weiguang
• Geng Weifei

Classifications

• F16C33/768

  between relatively stationary parts, i.e. static seals · CPC title

• F16C33/783

  of the mounting region · CPC title

• F16C33/7896

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

• F16C13/02

  Bearings · CPC title

• F16C33/7886 Primary

  mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race · CPC title