Title:
CYLINDRICAL ROLLER BEARING
Document Type and Number:
WIPO Patent Application WO/2012/173046
Kind Code:
A1
Abstract:
This invention prevents edge contact between a retainer guide surface of a flange of a bearing ring and a guide surface of a retainer that follows the tilt of a cylindrical roller, the edge contact being caused by a misalignment between a shaft and a housing. The initial shape of the guide surface (22) of the retainer (20) is set as that of a spherical surface (S) having a center (O) positioned on the bearing axis and on a radial plane passing through the center of the width of the raceway surface (32) of the bearing ring (30). The initial shape of the retainer guide surface (33) of the flange (31) is also set to a similar spherical shape. Even when a misalignment causes the tilt angle θ to reach the allowable tilt angle of 0.5°, and the retainer (20) tilts so as to follow the tilt of the cylindrical roller (10), a change in the radial dimension, caused by the spherical surface (S) shape of the guide surface (22), makes it possible for the retainer (20) to maintain a positive guide clearance.
Inventors:
TODA KOHEI (JP)
Application Number:
PCT/JP2012/064747
Publication Date:
December 20, 2012
Filing Date:
June 08, 2012
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
TODA KOHEI (JP)
TODA KOHEI (JP)
International Classes:
F16C19/26; F16C19/46; F16C33/46; F16C33/58
Foreign References:
| JP2008121769A | 2008-05-29 | |||
| JPH0712132A | 1995-01-17 | |||
| JPS6245420U | 1987-03-19 | |||
| JP2007292153A | 2007-11-08 | |||
| JP2005090657A | 2005-04-07 |
Attorney, Agent or Firm:
KAMADA Bunji et al. (JP)
Bunji Kamata (JP)
Bunji Kamata (JP)
Download PDF:
Claims:
Previous Patent: ELECTRICITY CHARGING DEVICE FOR MECHANICAL CAR PARK, AND MECHANICAL CAR PARK WITH SAME
Next Patent: EATERY POS SYSTEM
Next Patent: EATERY POS SYSTEM