| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil air lubricating structure for a sealed bearing with a simple structure capable of keeping an inner pressure thereof high for attaining on excellent lubricating condition and being easily assembled to a housing of the bearing. SOLUTION: This oil air lubricating structure for a sealed bearing takes oil air in the sealed bearing retained in spindle boxes 17 through a through-hole 16c for lubrication, wherein the oil air is supplied by a lubricating oil supply device for moving the lubricating oil using compressed air along an inner wall surface of a line. The structure is provided with a sealing device for preventing outflow of the oil air from oil air supply passages 17f, 16c leading into the sealed bearing from the spindle boxes 17. |
