Title:
ROLLING BEARING UNIT WITH COMBINATION SEAL RING, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2011/086982
Kind Code:
A1
Abstract:
A structure which enables a cylindrical section (15) of a slinger (13) to be press-fitted into a slinger fitting surface (20) of an inner ring (19a) without impairing the sealing ability between the cylindrical section (15) and the slinger fitting surface (20).
A continuous portion of the surface of an inner ring (19a) are ground at a time by a vertical rotary grinding stone after the inner ring (19a) is subjected to heat treatment, the continuous portion being composed of the portion of the slinger fitting surface (20), the portion of a chamfered section (25a), and the portion of the joint (27a) between the portion of the slinger fitting surface (20) and the portion of the chamfered section (25a). As a result, the entire continuous portion is formed as a flat smooth surface in which a corner which cannot be differentiated with respect to a cross-sectional shape thereof, that is, a corner which has a pointed edge, is not present.
Inventors:
KUROHARA, Hirofumi (1-5-50 Kugenumashinmei, Fujisawa-sh, Kanagawa 01, 〒2518501, JP)
Application Number:
JP2011/050236
Publication Date:
July 21, 2011
Filing Date:
January 11, 2011
Export Citation:
Assignee:
NSK Ltd. (6-3 Ohsaki 1-chome, Shinagawa-ku Tokyo, 60, 〒1418560, JP)
日本精工株式会社 (〒60 東京都品川区大崎一丁目６番３号 Tokyo, 〒1418560, JP)
日本精工株式会社 (〒60 東京都品川区大崎一丁目６番３号 Tokyo, 〒1418560, JP)
International Classes:
F16C33/78; B60B35/18; F16C19/18; F16C33/64
Attorney, Agent or Firm:
Kiwa International (Atago Mark Bldg, 9th Fl. 3-25-47, Nishi-shimbashi, Minato-k, Tokyo 03, 〒1050003, JP)
Claims: