Tapered roller bearing with cage for lubricant control

• US 10,641,334 B1
• Filed: 10/22/2018
• Issued: 05/05/2020
• Est. Priority Date: 10/22/2018
• Status: Active Grant

• Current Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Original Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Inventors: Tate, Shaun, Makke, Alaa
• Primary Examiner(s): Johnson, Phillip A
• Application Number:
  US16/166,234
• Publication Number:
  US 20200124102A1
• Time in Patent Office: 561 Days
• CPC Class Codes: F16C 19/364 with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
• CPC Class Codes: F16C 2240/46 Gap sizes or clearances
• CPC Class Codes: F16C 33/46 Cages for rollers or needles
• CPC Class Codes: F16C 33/4605 Details of interaction of cage and race, e.g. retention or centring
• CPC Class Codes: F16C 33/583 Details of specific parts of races
• CPC Class Codes: F16C 33/6659 Details of supply of the liquid to the bearing, e.g. passages or nozzles
• CPC Class Codes: F16C 33/667 related to conditioning, e.g. cooling, filtering

Abstract

Tapered roller bearings are disclosed. The bearing may include an inner ring defining an inner raceway and an outer ring defining an outer raceway. A plurality of tapered rollers may be disposed between the inner and outer rings and a cage may be configured to retain the plurality of tapered rollers. The inner ring may include a rib at a first axial end configured to retain a larger diameter end of the tapered rollers but not have a rib at a second axial end that is proximate a smaller diameter end of the tapered rollers. A gap may be defined between the cage and the inner ring at the second axial end, the gap configured to control a lubricant flow to the plurality of tapered rollers.

Claims

1. A tapered roller bearing, comprising:

an inner ring defining an inner raceway and an outer ring defining an outer raceway;

a plurality of tapered rollers disposed between the inner and outer rings;

a cage configured to retain the plurality of tapered rollers;

the inner ring including a rib at a first axial end configured to retain a larger diameter end of the tapered rollers but not having a rib that is proximate a smaller diameter end of the tapered rollers; and

a gap defined between the cage and the inner ring at the second axial end, the gap configured to control a lubricant flow to the plurality of tapered rollers.

2. The tapered roller bearing of claim 1, wherein the cage includes a radially extending portion that radially overlaps with an end face of the second axial end of the inner ring to form the gap.

3. The tapered roller bearing of claim 2, wherein the gap has a constant width defined between the cage and the end face.

4. The tapered roller bearing of claim 2, wherein the gap has a width of 0.1 to 1.5 mm.

5. The tapered roller bearing of claim 2, wherein an axially outer end face of the cage adjacent to the second axial end of the inner ring has a concave shape and is configured to fling away lubricant.

6. The tapered roller bearing of claim 1, wherein the cage includes a portion that extends radially and axially inward such that the portion radially overlaps with an end face of the second axial end of the inner ring to form the gap.

7. The tapered roller bearing of claim 6, wherein the cage is a stamped metal piece.

8. The tapered roller bearing of claim 1, wherein the cage includes a portion that extends parallel to the inner raceway and axially outward past an end face of the second axial end of the inner ring, the gap being formed between the portion and the inner raceway.

9. The tapered roller bearing of claim 8, wherein the gap has a constant width defined between the portion and the inner raceway.

10. The tapered roller bearing of claim 8, wherein the gap has a width of 0.1 to 1.5 mm.

11. The tapered roller bearing of claim 1, wherein the cage includes a first radially extending portion that radially overlaps with an end face of the second axial end of the inner ring to form a first section of the gap;

and

the cage includes a second portion that extends parallel to the inner raceway and axially outward past the end face of the second axial end of the inner ring, a second section of the gap being formed between the second portion and the inner raceway.

12. The tapered roller bearing of claim 11, wherein the first and second sections of the gap are contiguous.

13. The tapered roller bearing of claim 11, wherein the first and second sections of the gap have a same width.

14. The tapered roller bearing of claim 1, wherein the cage is retained on the rib at the first axial end of the inner ring.

15. The tapered roller bearing of claim 14, wherein the rib includes a projection and the cage is retained on the projection.

16. A tapered roller bearing, comprising:

an inner ring defining an inner raceway and an outer ring defining an outer raceway;

a plurality of tapered rollers disposed between the inner and outer rings;

a cage configured to retain the plurality of tapered rollers;

the inner ring including a rib at a first axial end configured to retain a larger diameter end of the tapered rollers and remaining radially inward of the tapered rollers at a second axial end that is adjacent to a smaller diameter end of the tapered rollers; and

a gap defined between the cage and the inner ring at the second axial end, the gap having a width of 0.1 to 1.5 mm.

17. The tapered roller bearing of claim 16, wherein the cage includes a radially extending portion that radially overlaps with an end face of the second axial end of the inner ring to form the gap.

18. The tapered roller bearing of claim 16, wherein the cage includes a portion that extends radially and axially inward such that the portion radially overlaps with an end face of the second axial end of the inner ring to form the gap.

19. The tapered roller bearing of claim 16, wherein the cage includes a portion that extends parallel to the inner raceway and axially outward past an end face of the second axial end of the inner ring, the gap being formed between the portion and the inner raceway.

20. The tapered roller bearing of claim 16, wherein the cage is retained on the rib at the first axial end of the inner ring.