| 摘要 |
An object of the present invention is to provide a rolling bearing device 10 which is capable of supplying lubrication oil to the rolling bearing 11 stably for a long time. The rolling bearing device has an oil supply unit which includes: a lubrication oil tank 46 with a discharge port of a lubrication oil; a pump 45 which sucks the lubrication oil from the lubrication oil tank 46 and discharge the lubrication oil; and an electric power source section for driving the pump 45. The oil supply unit is disposed inside the rolling bearing 11 or inside a spacer which is placed adjacent to the rolling bearing, and the pump is operated intermittently. The electric power source section for driving the pump 45 includes: a power generator section 41 which generates power by way of temperature difference between an inner and an outer rings in the rolling bearing 11; and a charging section 42 which stores the electric power from the power generator section 41. The pump 45 is driven when a voltage in the charging section 42 attains a driving voltage for the pump 45. |
