| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rolling bearing device increasing an absolute amount of solid lubricant contributing to lubrication in rotation of a bearing device, without increase in the number of parts. <P>SOLUTION: An inner ring spacer 6 is provided with a large width part 21 and a small width part 22 smaller in axial width than the large width part, and the large width part 21 is disposed on an outer diameter side of the small width part 22. Out of an end face of the large width part 21, a part of a circumferential region is brought into contact with an end face 2a of an inner ring 2, and the other region is not brought into contact with the end face of the inner ring, so that this noncontact part forms a lubricant supply passage 30. Further, a space between an end face of the small width part and the end face of the inner ring forms a lubricant retaining part 20. In the rotation of the bearing, powdery solid lubricant 13 filled in the lubricant retaining part 20 is flown toward the outer diameter side by a centrifugal force through the lubricant supply passage 30. <P>COPYRIGHT: (C)2012,JPO&INPIT |
