Title:
BEARING SEAL FOR WHEEL AND BEARING DEVICE ADAPTED FOR USE IN WHEEL AND PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2010/079734
Kind Code:
A1
Abstract:
A bearing seal for wheel, configured in such a manner that the bearing seal has low torque characteristics achieved by reducing sliding resistance of the seal and that the seal has improved reliability achieved by preventing the seal from separating when the seal is in the form of a single element and is not yet mounted in place.
The end surface of a seal plate (10) on the outer diameter side thereof and the end surface of an upstanding plate section (11b) of a slinger (11) are made to be flush with each other, and the width (W1) of the seal plate (10) is set to be greater than the width (W2) of the slinger (11). If contact loads on first and second side lips (13a, 13b) are F1 and F2 and straining force of a grease lip (13c) is F3, F1, F2, and F3 are set so as to satisfy the relationship of F1 + F2 ≤ 1.5 × F3, and the grease lip (13C) is disposed in such a manner that, when a seal (7) is in the form of a single element, the grease lip (13c) does not come out of a circular tube section (11a) of the slinger (11) even if the slinger (11) moves owing to reaction forces to the contact loads of the first and second side lips (13a, 13b).
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Inventors:
BABA, Tomoko (1578 Higashikaizuka, Iwata-sh, Shizuoka 10, 〒4388510, JP)
馬場智子 (〒10 静岡県磐田市東貝塚１５７８番地ＮＴＮ株式会社内 Shizuoka, 〒4388510, JP)
馬場智子 (〒10 静岡県磐田市東貝塚１５７８番地ＮＴＮ株式会社内 Shizuoka, 〒4388510, JP)
Application Number:
JP2010/000012
Publication Date:
July 15, 2010
Filing Date:
January 05, 2010
Export Citation:
Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
ＮＴＮ株式会社 (〒03 大阪府大阪市西区京町堀１丁目３番１７号 Osaka, 〒5500003, JP)
BABA, Tomoko (1578 Higashikaizuka, Iwata-sh, Shizuoka 10, 〒4388510, JP)
ＮＴＮ株式会社 (〒03 大阪府大阪市西区京町堀１丁目３番１７号 Osaka, 〒5500003, JP)
BABA, Tomoko (1578 Higashikaizuka, Iwata-sh, Shizuoka 10, 〒4388510, JP)
International Classes:
F16C33/78; B60B35/02; B60B35/18; F16C19/18; F16C41/00; F16J15/32
Attorney, Agent or Firm:
KOSHIKAWA, Takao (19F Hamamatsu Act Tower, 111-2 Itayamachi, Naka-ku, Hamamatsu-sh, Shizuoka 91, 〒4308691, JP)
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