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Title:
OBLIQUE CONTACT BALL BEARING AND BEARING DEVICE FOR SUPPORTING PINION SHAFT
Document Type and Number:
WIPO Patent Application WO/2005/080808
Kind Code:
A1
Abstract:
An oblique contact ball bearing adopted to support a pinion shaft, where a sufficient range of rotation torque is provided for the oblique contact ball bearing to facilitate highly accurate setting, adjustment, and management of preload. To achieve the above, in the oblique contact ball bearing, a rust preventive oil (35) having kinematic viscosity at 20°C of 1 - 30 mm2/s is provided at the portions where raceways (11a, 11b, 13a, 13b) of inner and outer rings (11, 13) and balls (17, 18) are in contact with each other. This increases rotation torque of the bearing and preload setting is made in this state. As a result, when a predetermined pressure-contact force (thrust load) is applied to the balls (17, 18) and to the raceways (11a, 11b, 13a, 13b), an oil-less state is relatively easily obtained and only an oil amount necessary for rust prevention stays on the raceways (11a, 11b, 13a, 13b) etc.

Inventors:
Kawaguchi, Toshihiro
Ogino, Kiyoshi
Application Number:
PCT/JP2005/002588
Publication Date:
September 01, 2005
Filing Date:
February 18, 2005
Export Citation:
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Assignee:
JTEKT Corporation (5-8 Minamisemba 3-chome, Chuo-ku Osaka-shi, Osaka, 542-8502, JP)
Kawaguchi, Toshihiro
Ogino, Kiyoshi
International Classes:
C10M129/40; C10M129/42; C10M129/58; C10M129/76; C10M133/08; C10M135/10; C10M137/02; C10M169/04; F16C19/18; F16C19/54; F16C25/06; F16C33/66; F16H57/021; F16H57/037; F16H57/038; F16H57/039; C10N20/02; C10N30/12; C10N40/02; F16H48/06; (IPC1-7): F16C19/18; C10M129/40; C10M129/42; C10M129/58; C10M129/76; C10M133/08; C10M135/10; C10M137/02; C10M169/04; F16C33/66; F16H57/02
Foreign References:
JP2003314541A2003-11-06
JP2003176832A2003-06-27
JP2004043718A2004-02-12
JPH11201172A1999-07-27
Other References:
WATABAYASHI E. ET AL: 'JIS Tsukaikata Series Korogari Jikuuke no Erabikata Tsukaikata.' 01 December 1976, pages 212 - 213
'The Toyo Bearing Mfg.' NTN, BEARING CATALOG no. 600, 1960, pages 89 - 91
See also references of EP 1734268A1
Attorney, Agent or Firm:
Okada, Kazuhide (Chiyoda Bldg. Kitakan, 13-38 Naniwa-cho, Kita-k, Osaka-shi Osaka, 530-0022, JP)
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