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Title:
METHOD FOR MANUFACTURING OUTER RING FOR ROLLING BEARING, AND ROLLING BEARING
Document Type and Number:
Japanese Patent JP2008279486
Kind Code:
A
Abstract:

To provide a method for manufacturing an outer ring for rolling bearing by which a rolling-formation is attained in a large diameter-enlarging ratio without causing crack in a ring-like base stock and a high precise outer ring for rolling bearing can stably be formed in a high yield, and to provide the rolling bearing.

The outer ring 10 for bearing is manufactured through: a process for forming the ring-like base stock 11 with a forging; a first rolling-forming process for enlarging the diameter of the ring-like base stock 11 as rectangular cross section into a prescribed outer diameter D2; and a second rolling-forming process for forming an orbital groove 16 to an intermediate treated ring-like base stock 11A whose diameter is enlarged.


Inventors:
KOBAYASHI KAZUTO
KOYAMA HIROSHI
Application Number:
JP2007126723A
Publication Date:
November 20, 2008
Filing Date:
May 11, 2007
Export Citation:
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Assignee:
NSK LTD
International Classes:
B21H1/12; F16C33/64
Domestic Patent References:
JPH0890129A1996-04-09
JP2006181638A2006-07-13
JP2004298898A2004-10-28
Attorney, Agent or Firm:
Shohei Oguri
Hironori Honda
Toshimitsu Ichikawa