ROLLING BEARING CAGE AND ROLLING BEARING

• US 20130223780A1
• Filed: 11/28/2011
• Published: 08/29/2013
• Est. Priority Date: 12/23/2010
• 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: Mangold, Andreas, Muller, Tobias, Bierlien, Andreas
• Granted Patent: US 8,888,373 B2
• Time in Patent Office: Days
• US Class Current: 384/470
• CPC Class Codes: F16C 2208/10 Elastomers; Rubbers
• CPC Class Codes: F16C 2300/14 Large applications, e.g. bearings having an inner diameter exceeding 500 mm
• CPC Class Codes: F16C 2360/31 Wind motors
• CPC Class Codes: F16C 25/08 self-adjusting
• CPC Class Codes: F16C 33/46 Cages for rollers or needles
• CPC Class Codes: F16C 33/513 formed of arcuate segments for carrying one or more rollers
• CPC Class Codes: F16C 33/56 Selection of substances F16C33/48, F16C33/49 take precedence
• CPC Class Codes: F16C 33/6637 with liquid lubricant
• CPC Class Codes: F16C 33/664 Retaining the liquid in or near the bearing
• CPC Class Codes: F16C 33/6648 in a porous or resinous body, e.g. a cage impregnated with the liquid

Abstract

The invention relates to a rolling bearing cage (10) having a plurality of loose segments (11, 12, 13, 14) arranged in the circumferential direction, wherein the segments (11, 12, 13, 14) comprise a main body (15) having at least one pocket (16) for receiving rolling bodies (21). According to the invention, at least one play compensating element (17) is arranged circumferentially between two adjacent main bodies (15), and the play compensating element (17) has circumferentially a higher elasticity than a main body (15), and the segments (11, 12, 13, 14) are arranged circumferentially without play at room temperature. The invention further relates to a rolling bearing comprising such a rolling bearing cage.

Claims

1. Rolling bearing cage comprising several loose segments arranged in a circumferential direction, each of the segments includes a base body with at least one pocket for holding rolling bodies, at least one play compensating element is arranged circumferentially between two adjacent ones of the base bodies and the play compensating element has a higher elasticity in the circumferential direction than the base body and the segments are arranged circumferentially without play at room temperature.

2. Rolling bearing cage according to claim 1, wherein the play compensating element causes a circumferential biasing of the segments at room temperature.

3. Rolling bearing cage according to claim 1, wherein the play compensating element is formed of a different material than the base body.

4. Rolling bearing cage according to claim 1, wherein the base bodies are made from a plastic and the play compensating element is made from plastic.

5. Rolling bearing cage according to claim 1, wherein at least one of the play compensating element is arranged between two circumferentially adjacent ones of the base bodies.

6. Rolling bearing cage according to claim 1, wherein at least one of the play compensating elements is arranged between multiple ones of the base bodies.

7. Rolling bearing cage according to claim 1, wherein the play compensating element is formed by a separate element from the base bodies.

8. Rolling bearing cage according to claim 7, wherein the at least one play compensating element has a spherical shape and engages in a spherical section-shaped recess of the two adjacent ones of the base bodies.

9. Rolling bearing cage according to claim 1, wherein the play compensating element is connected to one of the base bodies with a positive fit, non-positive fit, material fit, or combinations of the different fits.

10. Rolling bearing cage according to claim 9, wherein the play compensating element cannot be separated from the base body in a non-destructive way.

11. Rolling bearing cage according to claim 9, wherein each segment on a circumferential end area or on two circumferential end areas has one of the play compensating elements formed integrally with the base body.

12. Rolling bearing cage according to claim 1, wherein the play compensating element forms an essentially flat, circumferential end face of the segment.

13. Rolling bearing cage according to claim 1, wherein the at least one play compensating element forms a lubricant reservoir.

14. Rolling bearing comprising a rolling bearing cage according to claim 1.

15. Rolling bearing cage according to claim 4, wherein the base bodies are made from at least one of fiber-reinforced plastic or PEEK.

16. Rolling bearing cage according to claim 4, wherein the play compensating element is made from HNBR or NBR.