ROLLING BEARING DEVICE AND SPINDLE

摘要

A rolling bearing device and a spindle capable of eliminating the need of all or a part of external devices and pipes for lubrication while suppressing cost by using general purpose rolling bearings and solving a problem with noise by compressed air. A pump sucking and discharging a lubricating oil in a tank storing the lubricating oil and a nozzle in which a lubricating oil outlet in communication with the outlet of the pump to supply the lubricating oil discharged from the pump to a rolling bearing is opened in an annular space between the fixed ring and the rotating ring of the rolling bearing are assembled in a housing storing the rollerbearing on the outside of the rolling bearing, for example, on an outer ring spacer.