Split tapered roller bearing

Patent metadata

Field	Value
Publication number	US-10968948-B2
Application number	US-201816960962-A
Country	US
Kind code	B2
Filing date	Jul 19, 2018
Priority date	Jul 19, 2018
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

A bearing assembly ( 100 ) includes a split inner race ring ( 115 ) configured to be installed on a shaft ( 25 ) and defines two raceways ( 135, 140 ) for supporting rolling elements ( 150,155 ). A split clamping band ( 170 ) is configured to be installed over the split inner race ring ( 115 ) to secure the split inner race ring ( 115 ) on the shaft ( 25 ). A split seal wear ring ( 290, 295 ) is configured to be installed on an outer diameter surface of the split clamping band ( 170 ). An engagement interface between the split clamping band ( 170 ) and the split seal wear ring ( 290, 295 ) includes a boss ( 340 ) on one of the split clamping band ( 170 ) and the split seal wear ring ( 290, 295 ), and an aperture ( 355 ) on the other one of the split clamping band ( 170 ) and the split seal wear ring ( 290, 295 ). The aperture ( 355 ) is sized and configured to receive the boss ( 340 ) for positioning the split seal wear ring ( 290, 295 ) on the split clamping band ( 170 ).

First claim

What is claimed is:

1. A bearing assembly comprising:
a split inner race ring having first and second components configured to be installed and connected together on a shaft, each component of the split inner race ring defining two raceways for supporting rolling elements in a two-row orientation, and a central rib between the two raceways;
wherein the first and second components of the split inner race ring mate at a V-shaped split line;
a first split outer race ring having first and second components configured to be installed around the shaft, each component of the first split outer race ring defining a raceway for supporting a first row of the two rows of rolling elements; and
a second split outer race ring having first and second components configured to be installed around the shaft, each component of the second split outer race ring defining a raceway for supporting a second row of the two rows of rolling elements;
wherein the central rib includes a rib face along which the rolling elements slide, and wherein at the V-shaped split line, the rib face has a relief formed at an outer diameter portion of the rib face that is larger than any relief formed at an inner diameter portion of the rib face.

2. The bearing assembly of claim 1 , wherein the first and second components of the split inner race ring are first and second halves of the split inner race ring, and wherein the split inner race ring halves mate at two V-shaped split lines.

3. The bearing assembly of claim 2 , wherein the two V-shaped split lines are diametrically opposed about the split inner race ring, with one V-shaped split line in an upright configuration and the other V-shaped split line in an inverted configuration.

4. The bearing assembly of claim 1 , wherein an apex of the V-shaped split line is located on the central rib.

5. The bearing assembly of claim 1 , wherein the V-shaped split line is oriented such that on each of the two raceways, a leading edge of the split line encountered by the rolling elements rolling on the two raceways is adjacent a small diameter end of the rolling elements.

6. The bearing assembly of claim 5 , wherein a large diameter end of the rolling elements slides along a rib tangency face in a direction relative to the V-shaped split line such that the rolling elements slide off of the rib where an obtuse angle is formed between a split face defined by the V-shaped split line and the rib tangency face, and on to the rib where an acute angle is formed between the split face defined by the V-shaped split line and the rib tangency face.

7. The bearing assembly of claim 1 , wherein no relief is formed at the inner diameter portion of the rib face.

8. The bearing assembly of claim 1 , wherein the relief at the outer diameter portion of the rib face is one of a radius, a chamfer, and an edge break.

9. The bearing assembly of claim 1 , wherein the relief varies in size in a radial direction of the rib face.

10. The bearing assembly of claim 1 , wherein a relief is formed in the outer diameter portion of the rib face on both mating sides of the V-shaped split line.

11. The bearing assembly of claim 1 , further comprising a split pillowblock having first and second components configured to be installed and connected together around a mainshaft of a wind turbine, the split pillowblock being supported by a bedplate of the wind turbine.

12. A bearing assembly comprising:
a split inner race ring having first and second components configured to be installed and connected together on a shaft, each component of the split inner race ring defining two raceways for supporting rolling elements in a two-row orientation, and a central rib between the two raceways;
wherein the first and second components of the split inner race ring mate at split line, and wherein the central rib includes a rib face along which the rolling elements slide, and wherein at the split line, the rib face has a relief formed at an outer diameter portion of the rib face that is larger than any relief formed at an inner diameter portion of the rib face;
a first split outer race ring having first and second components configured to be installed around the shaft, each component of the first split outer race ring defining a raceway for supporting a first row of the two rows of rolling elements; and
a second split outer race ring having first and second components configured to be installed around the shaft, each component of the second split outer race ring defining a raceway for supporting a second row of the two rows of rolling elements.

13. The bearing assembly of claim 12 , wherein no relief is formed at the inner diameter portion of the rib face.

14. The bearing assembly of claim 12 , wherein the relief at the outer diameter portion of the rib face is one of a radius, a chamfer, and an edge break.

15. The bearing assembly of claim 12 , wherein the relief varies in size in a radial direction of the rib face.

16. The bearing assembly of claim 12 , wherein a relief is formed in the outer diameter portion of the rib face on both mating sides of the split line.

17. The bearing assembly of claim 12 , further comprising a split pillowblock having first and second components configured to be installed and connected together around a mainshaft of a wind turbine, the split pillowblock being supported by a bedplate of the wind turbine.

Assignees

• Timken Co

Inventors

• Dent Nick
• Werner Brian
• Wilmer Matthew
• Hager Carl H
• Stanciu Daniel F

Classifications

• F16C33/4647

  made from metal, e.g. two cast parts joined by rivets · CPC title

• F16C43/04

  Assembling rolling-contact bearings · CPC title

• F03D80/70

  Bearing or lubricating arrangements · CPC title

• F16C35/067

  Fixing them in a housing (with interposition of an element F16C35/07) · CPC title

• F16C35/047

  with a base plate substantially parallel to the axis of rotation, e.g. horizontally mounted pillow blocks · CPC title