ROLLER BEARING DEVICE
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United States of America Patent
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Issued Date -
Nov 17, 2016
app pub date -
Jan 16, 2015
filing date -
Jan 16, 2015
priority date (Note) -
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Abstract
A rolling bearing device is a combination of a rolling bearing and an oil supply unit which includes at least: a lubrication oil tank having a lubrication oil discharge port. The oil supply unit is in a housing space inside a spacer adjacent to the rolling bearing, and the housing space is between an inner ring and an outer ring. The housing space for the lubrication oil tank has a width approximately equal to an axial width of the spacer and a circumferential length within a range of a center angle θ in an axial view of the spacer; and the lubrication oil tank housed in the housing space is provided by a bag which has a width approximately equal to an axial width of the housing space and a length approximately equal to A×π×(θ/360), where A represents a center diameter of the spacer.
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