Double wall bearing cup
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 3, 2004
Grant Date -
Nov 28, 2002
app pub date -
Jul 10, 2002
filing date -
Jul 30, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A needle bearing cup includes an inner bearing cup having an inner surface which forms a rolling element raceway and an outer bearing cup disposed about the periphery of the inner bearing cup having a length greater than a length of the inner bearing cup to form a lip. The lip of the outer bearing cup is then formed to retain rolling elements within the inner bearing cup. Preferably, the rolling elements are needle rollers and the inner bearing cup is secured to an outer bearing cup by mechanical lock in the form of a protruding portion extending from the outer bearing cup. The bearing cup may be double drawn with first and second sheet metal blanks forming the inner and outer bearing cups. The lip of the outer bearing cup may be formed through ductile expansion using a punch having an inner diameter portion joined to an outer diameter portion with a step that contacts a top portion of the continuous sidewall portion of the inner bearing cup such that the lip extends about the outer diameter portion of the punch.
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