| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing device in which temperature elevation of a bearing due to stirring resistance of lubricating oil can be suppressed by suppressing the amount of lubricating oil intruding into a bearing space.SOLUTION: A rolling bearing device includes a rolling bearing Br and an oil supply and discharge mechanism Ku. The oil supply and discharge mechanism Ku includes: an inner ring circumferential groove 8 disposed on an outer circumferential surface of an inner ring extended portion 6; an oil supply path 9 disposed in an outer ring spacer 7; an oil discharge port 10 disposed in an outer ring spacer 7; and a suppression valve S. The suppression valve S is disposed on neighboring faces, which are a spacer end face of the outer ring spacer 7 adjacent to the outer ring 2, and a bearing end face of the bearing opposing to the spacer end face, and suppresses the amount of lubricating oil intruding into a bearing space A1 through a gap δ1 between the inner circumferential surface of the outer ring spacer 7 and the outer circumferential surface of the inner ring 1. |
