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Title:
SELF-ALIGINING ROLLER BEARING
Document Type and Number:
WIPO Patent Application WO/2005/047718
Kind Code:
A1
Abstract:
An outer ring raceway surface (14) formed on the inner peripheral surface of an outer ring (13) has roughness higher than that of inner ring raceways (12a, 12b) of an inner ring (11). Average roughness (Ra) in the axial direction and circumferential direction of the outer ring raceway surface (14) is 0.1 μm ≤ Ra ≤ 0.5 μm in the ranges of b1/(B/2) ≤ 0.9 and b2(B/2) ≤ 0.9 and in the measurement length of 0.1 mm to 1.0 mm, with B the width of the outer ring (13), b1 and b2 the distances in the axial direction from both end surfaces of the outer ring (13). Roughness parameter (S) of the outer raceway surface is 0 < S ≤ 20 μm.

Inventors:
Ueda, Kouji
Ueda, Tooru
Application Number:
PCT/JP2004/017212
Publication Date:
May 26, 2005
Filing Date:
November 12, 2004
Export Citation:
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Assignee:
NSK Ltd. (6-3 Ohsaki 1-chome, Shinagawa-ku Tokyo, 60, 14185, JP)
Ueda, Kouji
Ueda, Tooru
International Classes:
F16C23/08; F16C33/58; (IPC1-7): F16C23/08; F16C33/58; F16C33/34; F16C33/64
Foreign References:
JPH0439414A1992-02-10
JP2002339989A2002-11-27
JPH01220720A1989-09-04
JP2005030425A2005-02-03
JPS5761933B21982-12-27
JPH0439414A1992-02-10
Other References:
JAPANESE STANDARDS ASSOCIATION: "JIS handook kikai yoso", 20 April 1995, article "Hyomen arasa-teigi oyobi hyoji B 0601", pages: 181 - 191, XP002988160
See also references of EP 1754903A4
Attorney, Agent or Firm:
Oguri, Shohei (Eikoh Patent Office, 13th Floor ARK Mori Building, 12-32, Akasaka 1-chome, Minato-k, Tokyo 13, 10760, JP)
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