Double row ball bearing and shaft support device
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United States of America Patent
Stats
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Sep 5, 2017
Grant Date -
Oct 15, 2015
app pub date -
Apr 15, 2015
filing date -
Apr 15, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A double row ball bearing includes: an outer ring; an inner ring; a plurality of first balls disposed between the outer ring and the inner ring to form a first ball row; a plurality of second balls disposed between the outer ring and the inner ring to form a second ball row having a pitch circle diameter larger than that of the first ball row; an annular first cage having a plurality of first pockets in which the first balls are held; an annular second cage having a plurality of second pockets in which the second balls are held; and an annular portion that covers, together with the outer ring, a portion of each second ball held in the second pocket from the radially outside, the portion being exposed on the outside of the second pocket and oriented radially outward.
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