MECHANICAL BEARING

• US 20150167738A1
• Filed: 11/14/2014
• Published: 06/18/2015
• Est. Priority Date: 11/14/2013
• Status: Active Grant

• Current Assignee: ABet SKF, SKF Aerospace France S.A.S
• Original Assignee: ABet SKF, SKF Aerospace France S.A.S
• Inventors: Doki-Thonon, Thomas, Aury, Alexandre, Deloeil, Pascal
• Granted Patent: US 9,239,077 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F16C 19/26 with a single row of rollers
• CPC Class Codes: F16C 2240/46 Gap sizes or clearances
• CPC Class Codes: F16C 2361/61 Toothed gear systems, e.g. support of pinion shafts in general F16H57/02
• CPC Class Codes: F16C 33/467 Details of individual pockets, e.g. shape or roller retaining means
• CPC Class Codes: F16C 33/513 formed of arcuate segments for carrying one or more rollers
• CPC Class Codes: F16C 33/542 made from sheet metal
• CPC Class Codes: F16C 35/042 Housings for rolling element bearings for rotary movement

Abstract

A mechanical bearing having an outer ring and an inner ring, centred on a same bearing axis, the outer ring being arranged radially around the inner ring, and a cage, arranged coaxially between the inner ring and the outer ring and housing cylindrical rollers, with this cage being formed by several disjointed tubular portion which, in the assembled state of the bearing, are separated from each other by a non-zero gap. The cage is formed by at least three disjointed tubular portions that do not cooperate mechanically with each other in assembled state of the bearing.

Claims

1. A mechanical bearing comprising:

an outer ring and an inner ring, centred on a bearing axis (X2), the outer ring being arranged radially around the inner ring,

a cage, arranged coaxially between the inner ring and the outer ring and housing cylindrical rollers, the cage being formed by several disjointed tubular portions which, in the assembled state of the bearing, are separated from each other by a non-zero gap, and wherein

the cage is formed by at least three disjointed tubular portions, that do not cooperate mechanically with each other in assembled state of the bearing.

2. The bearing according to claim 1, wherein the cage is formed by four tubular portions.

3. The bearing according to claim 2, wherein the four tubular portions of the cage are identical.

4. The bearing according to claim 1, wherein in an assembled state of the bearing, the gap (I1) that separates the portions of the cage is between 10 and 70% of the space between two adjacent cylindrical rollers.

5. The bearing according to claim 1, wherein each portion of the cage delimits at least one through housing for receiving a cylindrical roller.

6. The bearing according to claim 5, wherein each portion of the cage delimits several housings for receiving rollers.

7. The bearing according to claim 6, wherein the housings for receiving rollers of each tubular portion are regularly spaced about the bearing axis.

8. The bearing according to claim 5, wherein each portion of the cage delimits the same number of housings for receiving rollers.

9. The bearing according to claim 8, wherein each portion of the cage delimits three housings for receiving rollers.

10. The bearing according to claim 5, wherein the at least one housing of each portion of the cage present a rectangular contour, of which the dimensions correspond to those of cylindrical rollers.

11. The bearing according to claim 1, wherein the inner ring includes a peripheral groove wherein the cylindrical rollers are partially housed.

12. The bearing according to claim 1, wherein the cage is guided by the inner ring and exerts, during operation, a centring force on the inner ring.