Rolling bearing, rotation device, and method for manufacturing rolling bearing
AssigneeSeiko Instruments Inc.
InventorsAkihiro Iino, Misato Hanaoka
Life of this patent
Estimating the term…
Abstract
To provide a rolling bearing excellent in long-term durability. A rolling bearing includes: an inner ring and an outer ring disposed coaxially with each other; a rolling element disposed between the inner ring and the outer ring; a seal member mounted on the outer ring and configured to cover a space between the inner ring and the outer ring from an outside in an axial direction; and grease disposed between the rolling element and the seal member. The grease is in contact with an inner circumferential surface of the outer ring and the seal member. Unworked penetration of the grease is more than 178 and less than 287.
Claims12
A rolling bearing comprising:
- a first ring and a second ring disposed coaxially with each other, wherein the first and second rings form an inner ring and an outer ring of the rolling bearing, respectively;
- a rolling element disposed between the first ring and the second ring;
- a seal member mounted on the second ring and configured to isolate a space between the first ring and the second ring from an outside in an axial direction, wherein the seal member comprises:
- an annular pedestal portion being in contact with the second ring,
- an extending portion extending radially and outwardly in the axial direction from a circumferential edge of the pedestal portion, and
- a flat surface portion extending radially from an end edge of the extending portion toward the first ring;
- and
- grease that is disposed between the rolling element and the seal member, the grease being in contact with the second ring but not in contact with the first ring, and the grease being in contact with the flat surface portion of the seal member but not in contact with the extending portion of the seal member, and
- wherein unworked penetration of the grease is more than 178 and less than 287.
A rolling bearing comprising:
- a first ring and a second ring disposed coaxially with each other, wherein the first and second rings form an inner ring and an outer ring of the rolling bearing, respectively;
- a rolling element disposed between the first ring and the second ring;
- a seal member mounted on the first ring and configured to isolate a space between the first ring and the second ring from an outside in an axial direction, wherein the seal member comprises:
- an annular pedestal portion being in contact with the first ring, an extending portion extending radially and outwardly in the axial direction from a circumferential edge of the pedestal portion, and
- a flat surface portion extending radially from an end edge of the extending portion toward the second ring;
- and
- grease that is disposed between the rolling element and the seal member, the grease being in contact with the first ring but not in contact with the second ring, and the grease being in contact with the flat surface portion of the seal member but not in contact with the extending portion of the seal member, and
- wherein unworked penetration of the grease is more than 178 and less than 287.
Dependencies are inferred from the claim text.