Wenderoth, Lind & Ponack, L.L.P.
Rolling bearing device
A rolling bearing device has an oil supply unit which includes: a lubrication oil tank with a discharge port of a lubrication oil; a pump which sucks the lubrication oil from the lubrication oil tank and discharges the lubrication oil; and an electric power source section for driving the pump. The oil supply unit is disposed inside the rolling bearing 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 includes: a power generator section which generates power by temperature difference between inner and outer rings in the rolling bearing; and a charging section which stores the electric power from the power generator section. The pump is driven when a voltage in the charging section attains a driving voltage for the pump.
NTN Corporation
F F F F F F F
F16C F16N F16C F16C F16C F16N F16N
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Hiroyoshi Kaoru
Ito Oomoto