| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil air lubrication type rolling bearing device which inhibits air-blowing sounds caused by oil air crossing a rolling element and stably supplies a lubrication oil to the interior of the bearing.SOLUTION: The oil air lubrication type rolling bearing device includes: an inner ring 12; an outer ring 11; and a rolling element 13. The inner ring 12 includes: a rolling bearing 2 which rotates; and a nozzle member 3 which is placed adjacent to the outer ring 11 or the inner ring 12, the nozzle member 3 in which an oil air discharge passage 24 for supplying oil air to the inner ring 12 is formed. An annular part 18 serving as an oil air receiving part is formed on an outer peripheral surface of an inner ring 12 end part. A protruding part 16 which protrudes in an axial inward direction relative to the inner ring 12 end surface is provided on an inner ring 12 facing surface of the nozzle member 3. The annular part 18 includes a side surface 18c which continues into a bottom surface 18a through a curve surface part 18b. An annular space S opens at an axial inward end part and communicates with the oil air discharge passage 24 in an axial outward direction. One or both of the bottom surface 18a and an inner peripheral surface 16a have irregular surfaces. |
