CAGE FOR ROLLING BEARING
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United States of America Patent
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Issued Date -
Mar 17, 2016
app pub date -
Apr 21, 2014
filing date -
Apr 25, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
An object of the present invention is to provide a retainer 3 which can be made of a quick-wearing material such as ductile iron (spherical graphite cast iron) like a retainer 3 used in an angular ball bearing for a screw compressor yet can prevent premature wearing of a guide surface. A retainer 3 of an inner ring guide type for a rolling bearing, which makes contact with an inner ring 1 and is guided thereby during operation, has a guide clearance “b” with respect to the inner ring 1, and a pocket clearance “a”. The pocket clearance has a ratio to the guide clearance in a range from 75% through to 100%, which makes it possible to use easy-wearing materials such as ductile iron.
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