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Title:
TAPERED ROLLER BEARING FOR TRANSMISSION
Document Type and Number:
Japanese Patent JP2007127220
Kind Code:
A
Abstract:

To reduce torque without rigidity of a bearing.

A tapered roller bearing 1 for a transmission comprises, an inner ring 2, an outer ring 3, a plurality of tapered rollers 4, and a cage 5. A coefficient γ of roller exceeds 0.94. The cage 5 is constituted of an annular part 6 contiguous to a small end face side of the tapered roller 4, an annular part 7 contiguous to a large end face side of the tapered roller 4, and a plurality of columns 8 connecting the annular parts. Tapered faces 8a in contact with a rolling face of each tapered roller 4 are formed on both sides of an inner diameter face of the column part 8, and the length L in a lateral direction of the tapered faces is 5% or more and less than 11% of an average diameter of the tapered rollers 4.


Inventors:
TSUJIMOTO TAKASHI
Application Number:
JP2005321345A
Publication Date:
May 24, 2007
Filing Date:
November 04, 2005
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C33/46; F16C19/36; F16H57/021
Domestic Patent References:
JP2005188738A2005-07-14
JP2005147365A2005-06-09
JP2005147364A2005-06-09
JP2000170775A2000-06-20
Attorney, Agent or Firm:
Shogo Ehara
Hideka Tanaka
Yoshiyuki Shiraishi
Kunihiko Shiromura
Tsuyoshi Kumano
Hiroaki Yamane