LUBRICANT SUPPLY UNIT AND BEARING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a lubricant supply unit capable of detecting supply abnormality of lubricant.SOLUTION: A lubricant supply unit includes: a lubricant tank 30 holding lubricant; a pump 29 configured to supply lubricant from the lubricant tank 30 to the inside of a bearing; a power generation unit 25 configured to generate power for operating the pump 29; a power storage unit 86 charged by power generated by the power generation unit 25, and configured to supply power to the pump 29; a voltage detection unit (A/D converter 27d) configured to detect voltage of the power storage unit 86; and a data processing device 27a configured to determine that the power storage unit 86 is in an abnormal state when change of the detection value of the voltage detection unit does not show a preset charging characteristic.SELECTED DRAWING: Figure 4