| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooling structure of a bearing device which can equally cool rolling bearings in a circumferential direction, and can efficiently cool an inner ring spacer which is interposed between inner rings of the rolling bearings, in the bearing device having a plurality of the rolling bearings which are aligned in an axial direction.SOLUTION: In a bearing device J, an outer ring spacer 4 and an inner ring spacer 5 are interposed between outer rings 2 and between inner rings 3 of a plurality of rolling bearings 1 which are aligned in an axial direction, the outer rings 2 and the inner rings 4 are arranged in a housing, and the inner rings 3 and an inner ring spacer 5 are fit to a shaft. A plurality of nozzles 12 for blowing cooling winds to an external peripheral face of the inner ring spacer 5 are arranged at the outer ring spacer 4. For example, the nozzles 12 are arranged in a plurality of aligning rows at the outer ring spacer 4 in an axial direction and a circumferential direction, respectively. |
