Cage for rolling bearing and rolling bearing
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United States of America Patent
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Aug 16, 2016
Grant Date -
Oct 15, 2015
app pub date -
Nov 7, 2013
filing date -
Nov 8, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A cage for a rolling bearing having a film, formed on a surface thereof, which wears little over a long period of time from an initial stage of sliding contact between the film and rolling elements as well as other members and does not peel off the surface of a base material of the cage or dissolve in lubricating oil containing a sulfur-based additive and a rolling bearing having the cage. A cage (2) retains needle rollers (3) which are rolling elements of a needle rolling bearing (1). Of an entire outer surface of the cage (2), a tin alloy film consisting of tin and a metal other than the tin is formed on at least a sliding-contact surface of the cage (2) to be subjected to sliding contact with the needle rollers (3) and a sliding-contact surface thereof to be subjected to sliding contact with other members.
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