Rolling bearing device
AssigneeJtekt Corporation
InventorsTakeshi YAMAMOTO, Hiroshi UENO
Life of this patent
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Abstract
A lubricant supply unit that supplies lubricating oil to a raceway groove of an inner ring is fixed to an outer ring. The lubricant supply unit is provided with a first and second radially separated electrodes used to supply electric power from an external power source to the micropump. Each of the first and second radially separated electrodes is fixed to an outer face of a tank that is stationary relative to the micropump so as to be exposed on the outside of the lubricant supply unit. The first radially separated electrode is arranged so as to be apart from the second radially separated electrode.
Claims2
A rolling bearing device comprising:
- a first bearing ring having an inner periphery raceway surface;
- a second bearing ring having an outer periphery raceway surface;
- a plurality of rolling elements disposed between the inner periphery raceway surface of the first bearing ring and the outer periphery raceway surface of the second bearing ring;
- and
- a lubricant supply unit having at least a tank and a pump that supplies lubricant to at least one of the inner periphery raceway surface of the first bearing ring, the outer periphery raceway surface of the second bearing ring, and the rolling elements, wherein
- the lubricant supply unit has one or more electrodes to which electric power is supplied from an external power source, and a part of the lubricant supply unit is fixed to one member out of the first bearing ring and the second bearing ring, and
- each of the one or more electrodes is fixed to the one member or the lubricant supply unit, in a state where each of the one or more electrodes is exposed on an outside of the one member or the lubricant supply unit, and
- each of the one or more electrodes is fixed to a peripheral face of the one member out of the first bearing ring and the second bearing ring, or an end face of the one member out of the first bearing ring and the second bearing ring.
Dependencies are inferred from the claim text.