Rotator with bearing, and method for manufacturing the same
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United States of America Patent
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Mar 1, 2005
Grant Date -
Jul 17, 2003
app pub date -
Jan 15, 2003
filing date -
Jan 15, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A pulley includes a radial rolling bearing and a pulley main body which are integrated to each other by an insert molding method. Therefore, a metal insert member is not required between the resin pulley main body and the radial rolling bearing, thereby reducing production cost of the pulley. Further, an axial dimension of an outer ring of the radial rolling bearing is set larger than an axial dimension of an inner ring thereof, so that a contact area between the radial rolling bearing and the pulley main body is increased. Therefore, a connection strength between the radial rolling bearing and the pulley main body is increased, and a surface area of the radial rolling bearing is increased, thereby improving heat radiation performance of the radial rolling bearing.
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