Retainer for rolling bearing and manufacturing method therefor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 4, 2003
Grant Date -
Jan 10, 2002
app pub date -
Jul 5, 2001
filing date -
Jul 6, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A retainer for rolling bearings is made from a phenol resin in which graphite and cotton fabric chips are mixed, and an inner circumferential surface and side surfaces other than inner circumferential surfaces of the pockets of the retainer are made of a skin layer. Therefore, the strength can be ensured with this skin layer, while the skin layer is absent in the inner circumferential surfaces of the pockets serving as sliding surfaces, allowing the graphite and the cotton fabric chips to be exposed, so that the lubricating performance can be ensured. Thus, a retainer for rolling bearings, as well as a manufacturing method therefor, which allows lubricating performance and strength to be ensured at the same time can be provided.
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