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US 9,810,267 B2Granted
Retention arrangement for a rolling element bearing
AssigneeSchaeffler Technologies AG & Co. KG
InventorAllen Hale
Life of this patent
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Abstract
A rolling element bearing retention arrangement provides axial and rotational retention of a rolling element bearing within a housing. A retaining ring is received partially within circumferential grooves located on an outer ring of the rolling element bearing, and within a bore of the housing, providing axial retention. Inward and outward directed protrusions on each end of the retaining ring engage cavities within the respective circumferential grooves, providing rotational retention.
Claims8
A rolling element bearing retention arrangement comprising:
- an outer ring including:
- a first inner radial surface having an outer rolling element raceway;
- an outer radial surface having a first circumferential groove configured with a first cavity;
- a housing including:
- a coefficient of thermal expansion greater than a coefficient of thermal expansion of the outer ring;
- a bore with a second inner radial surface for receiving the outer ring, the second inner radial surface having a second circumferential groove configured with a second cavity;
- and,
- a retaining ring received partially by the first and second circumferential grooves, the retaining ring including:
- a radially inward directed protrusion at a first end engaged with the first cavity;
- and
- a radially outward directed protrusion at a second end engaged with the second cavity;
- and
- in a first retained state at a first temperature:
- the outer radial surface is axially and rotationally retained by the second inner radial surface by an interference fit;
- and,
- in a second retained state at a second temperature greater than the first temperature:
- the outer radial surface is axially and rotationally retained by the retaining ring, the first and second circumferential grooves, and the first and second cavities;
- and, the outer radial surface is separated from the second inner radial surface.
15 more elements
A rolling element bearing assembly comprising:
- an outer ring configured to be received within a bore of a housing, the outer ring including:
- a first inner radial surface having an outer rolling element raceway;
- an outer radial surface having a first circumferential groove configured with a first cavity;
- a retaining ring received partially by the first circumferential groove, the retaining ring including:
- a radially inward directed protrusion at a first end engaged with the first cavity;
- and,
- a radially outward directed protrusion at a second end configured to engage with a second cavity arranged within a second circumferential groove on a second inner radial surface of the bore;
- and,
- in a first retained state at a first temperature:
- the outer radial surface is axially and rotationally retained by the second inner radial surface by an interference fit;
- and,
- in a second retained state at a second temperature greater than the first temperature:
- the outer radial surface is separated from the second inner radial surface;
- and,
- the outer radial surface is rotationally retained by the retaining ring, the first and second circumferential grooves, and the first and second cavities;
- and,
- wherein a coefficient of thermal expansion of the housing is greater than a coefficient of thermal expansion of the outer ring.
14 more elements
Dependencies are inferred from the claim text.