Lubrication groove for deep groove ball bearing

Patent metadata

Field	Value
Publication number	US-10612595-B2
Application number	US-201816101851-A
Country	US
Kind code	B2
Filing date	Aug 13, 2018
Priority date	Aug 13, 2018
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

A deep groove ball bearing assembly is disclosed. The assembly includes an inner bearing ring defining an inner race, an outer bearing ring defining an outer race, and a plurality of rolling elements supported on the inner race and the outer race. A shaft is supported on a radially inner surface of the inner bearing ring, and a housing is supported on a radially outer surface of the outer bearing ring. The assembly includes a contact surface on at least one of: the inner bearing ring, the outer bearing ring, the shaft, or the housing. The contact surface includes at least one lubrication groove.

First claim

What is claimed is:

1. A deep groove ball bearing assembly comprising:
an inner bearing ring defining an inner race;
an outer bearing ring defining an outer race;
a plurality of rolling elements supported on the inner race and the outer race;
a shaft supported on a radially inner surface of the inner bearing ring;
a housing supported on a radially outer surface of the outer bearing ring;
a contact surface on at least one of: the outer ring or the housing, the contact surface includes a plurality of grooves; and
at least one lubricant conduit is defined in the housing and extends between a housing end surface and the contact surface, such that the at least one lubricant conduit terminates at the contact surface in a region between two grooves of the plurality of grooves.

2. The deep groove ball bearing assembly of claim 1 , wherein the plurality of grooves are formed on a radially inner surface of the housing.

3. The deep groove ball bearing assembly of claim 1 , wherein the plurality of grooves includes at least three grooves, and each of the at least three grooves extends for a single revolution.

4. The deep groove ball bearing assembly of claim 1 , wherein the contact surface of the housing has a first axial extent, and the plurality of grooves have a second axial extent that is at least 15% of the first axial extent.

5. The deep groove ball bearing assembly of claim 1 , wherein the plurality of grooves are formed on the radially outer surface of the outer bearing ring.

6. The deep groove ball bearing assembly of claim 1 , wherein the plurality of grooves are pitched grooves.

7. A deep groove ball bearing assembly comprising:
an inner bearing ring defining an inner race;
an outer bearing ring defining an outer race;
a plurality of rolling elements supported on the inner race and the outer race;
a shaft supported on a radially inner surface of the inner bearing ring;
a housing supported on a radially outer surface of the outer bearing ring; and
a contact surface on a radially inner surface of the housing, wherein the contact surface includes a plurality of grooves, and the housing includes at least one lubricant conduit extending between an axial end surface and the radially inner surface of the housing,
wherein the axial end surface of the housing includes a plurality of lubrication inlets spaced apart from each other in a circumferential direction.

8. The deep groove ball bearing assembly of claim 7 , wherein the housing is formed from aluminum and the outer bearing ring is formed from steel.

9. The deep groove ball bearing assembly of claim 7 , wherein the plurality of grooves are angled relative to a circumferential plane.

Assignees

• Schaeffler Technologies Ag

Inventors

• Zhong Guihui
• Ince Marion Jack
• Kottapalli Venkata

Classifications

• F16C35/063

  Fixing them on the shaft (with interposition of an element F16C35/07) · CPC title

• F16C35/067

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

• F16C33/586 Primary

  outside the space between the races, e.g. end faces or bore of inner ring · CPC title

• F16C33/6651

  in recesses or cavities provided in retainers, races or rolling elements · CPC title

• F16C37/007

  of rolling bearings · CPC title