Bearing apparatus
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United States of America Patent
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Jun 11, 2013
Grant Date -
Jan 31, 2013
app pub date -
Oct 9, 2012
filing date -
Dec 5, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A bearing apparatus to be supported by an axle box which includes a key groove, the bearing apparatus includes an outer ring which includes a first key groove extending from an inner diameter to an outer diameter of an axial end surface of the outer ring, an inner ring, rolling elements rollably interposed between the outer and inner rings, and a key member which includes an annular body, a first inwardly projecting part which is provided on the annular body and adapted to be inserted into the first key groove of the outer ring, and an outwardly projecting part which is provided on an outer periphery of the annular body and adapted to be inserted into the key groove of the axle box.
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