| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing device which is allowed to stably operate for a long period.SOLUTION: A bearing device 10 includes a bearing 11, and a lubricating oil supply unit 20 connected to the bearing 11. The bearing oil supply unit 20 includes a lubricating oil tank 30 for holding lubricating oil to be supplied into the bearing 11, a supply part for supplying the lubricating oil from the holding part into the bearing 11, and a power generation part 25 for generating electric power. The supply part works with the electric power generated by the power generation part 25. The supply part includes a nozzle 32a for supplying the lubricating oil into the bearing 11. In the axial direction of the bearing 11, the position of the front end of the nozzle 32a is located on the center side of the cage 16 beyond an end face 16a of the cage 16. The ratio of a distance A from the end face 16a of the cage 16 to the front end of the nozzle 32a to a width W of the cage 16 is above 0% and not higher than 20%.SELECTED DRAWING: Figure 2 |
