Method for manufacturing a bearing raceway member
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United States of America Patent
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Mar 30, 2010
Issued Date -
N/A
app pub date -
May 14, 2003
filing date -
May 14, 2002
priority date (Note) -
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Abstract
At least a race (1c) of a blank (B) for forming a bearing raceway member is hardened by heating and is finished to predetermined precisions. Subsequently, the race (1c) is roller burnished for additional hardening. The blank (B) is formed from a steel for bearing manufacture and is subjected to the roller burnishing, thereby achieving a hardness of HRC65 or more at a surface of the race (1c), and a center-line average roughness Ra of 0.1 .mu.m or less at the surface of the race (1c) and achieving a hardness of HRC60 or more at the depth of at least 0.2 mm from the surface of (1c).
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