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Title:
ROLLING BEARING
Document Type and Number:
Japanese Patent JP2002339999
Kind Code:
A
Abstract:

To provide a rolling bearing of very small friction torque with excellent waterproof performance.

This rolling bearing has two seals on each end, first seals 5 and 5 fixed to an outer ring 2, second seals 6 and 6 are fixed to an inner ring 1 and brought into slidable contact with side surfaces of the first seals 5 and 5, and the diameter R of a slidable contact part 6d of the second seal 6 is not larger than the pitch circle P.C.D. of the bearing. Since the bearing is sealed double by the first seals 5 and 5 in slidable contact with the inner ring 1 and the second seals 6 and 6 in slidable contact with the side surfaces of the first seals 5 and 5, the waterproof performance is considerably improved. In addition, since the diameter R of the slidable contact part 6d of the second seal 6 is not larger than the pitch circle, the sliding friction of the second seal 6 is small, and the increase in the torque can be suppressed.


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Inventors:
Ikeda, Tetsuo
Kitamura, Kazuhisa
Application Number:
JP2001000147405
Publication Date:
November 27, 2002
Filing Date:
May 17, 2001
Export Citation:
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Assignee:
KOYO SEIKO CO LTD
International Classes:
F16C33/78; F16C33/66; (IPC1-7): F16C33/78; F16C33/66
Domestic Patent References:
JP2001020960A
JPS50128546U
JPH0534319U
Attorney, Agent or Firm:
河▲崎▼ 眞樹



 
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