RETAINER FOR NEEDLE ROLLER BEARING, AND NEEDLE ROLLER BEARING
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United States of America Patent
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Issued Date -
Sep 29, 2016
app pub date -
Oct 22, 2014
filing date -
Oct 22, 2014
priority date (Note) -
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Abstract
A needle roller bearing retainer of the invention for supporting the planetary gear of a planetary gear mechanism rotatably includes an annular part and multiple pillar parts extending in the axial direction from the annular part, holds a roller between the adjoining pillar parts, and is used in an outer ring guide system, while a composite film containing phosphate and solid lubricant selected from soft metal-based solid lubricant and layer crystal structure material, or, a composite film containing phosphate and phosphorous compound having soft metal is formed at least on the outer peripheral surface of the retainer.
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