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Title:
ROLLER BEARING WITH STEEL PLATE RACE
Document Type and Number:
WIPO Patent Application WO/2005/010386
Kind Code:
A1
Abstract:
A roller bearing with a steel plate race enabling a reduction in treatment time for hardening treatment, requiring simple manufacturing equipment, enabling an easy increase in quality, and requiring less stock in process in a limited production of a wide variety of goods. In particular, the roller bearing allows a reduction in production steps when the edge of a flange part is bent. The roller bearing comprises a steel plate outer ring (1) and rollers (2). High-frequency hardening and tempering are applied to at least the raceway surface (1a) of the outer ring (1). The outer ring (1) is of a shell type. Other than the raceway surface (1a), the high-frequency hardening and tempering are also applied onto the inner surface of one flange part (6). The other flange part (7) is left untreated to bend the edge thereof later.

Inventors:
MAEDA KIKUO (JP)
HIRAOKA TSUNEAKI (JP)
WATANABE YASUYUKI (JP)
Application Number:
PCT/JP2004/009797
Publication Date:
February 03, 2005
Filing Date:
July 09, 2004
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD (JP)
MAEDA KIKUO (JP)
HIRAOKA TSUNEAKI (JP)
WATANABE YASUYUKI (JP)
International Classes:
F16C19/24; F16C19/30; F16C19/44; F16C33/64; C21D1/10; C21D9/40; (IPC1-7): F16C33/64; F16C19/24; F16C19/30; C21D9/40
Foreign References:
JPS515336B11976-02-19
JPS5096830U1975-08-13
JPS53103056U1978-08-19
JPS52127417A1977-10-26
JP2002213461A2002-07-31
JPH1046318A1998-02-17
Attorney, Agent or Firm:
Sugimoto, Shuji (10-2 Edobori 1-chome, Nishi-k, Osaka-shi Osaka 02, JP)
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