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Patent Searching and Data


Title:
BALL BEARING
Document Type and Number:
Japanese Patent JP2012149733
Kind Code:
A
Abstract:

To provide a ball bearing which prevents a retainer from being damaged even when an axial load and a radial load are applied to the ball bearing to cause misalignment between an outer ring and an inner ring.

The ball bearing includes an outer ring having an outer ring raceway groove and an outer ring groove shoulder, an inner ring having an inner ring raceway groove and an inner ring groove shoulder, a plurality of balls 40 arranged between the outer ring raceway groove and the inner ring raceway groove, and a wave type press retainer 50A having a plurality of pockets 52 for rotatably retaining the plurality of balls 40. The wave type press retainer 50A is guided to the outer ring groove shoulder or the inner ring groove shoulder. When a radial guide gap between the inner circumferential surface of the outer ring groove shoulder or the outer circumferential surface of the inner ring groove shoulder and the guide surface of the wave type press retainer 50A is Cg, the diameter of each of the balls 40 is Dw, the maximum circumferential displacement of each of the balls 40 in each of the pockets 52 is δc, and the maximum radial displacement is δr, 0.04Dw<δc, and Cg<δr are satisfied.


Inventors:
SATO YOSHIHIRO
Application Number:
JP2011000010065
Publication Date:
August 09, 2012
Filing Date:
January 20, 2011
Export Citation:
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Assignee:
NSK LTD
International Classes:
F16C33/42; F16C19/16
Domestic Patent References:
JPH06173958A1994-06-21
JP2008190630A2008-08-21
JP2004144183A2004-05-20
JP2008256152A2008-10-23
Attorney, Agent or Firm:
小栗 昌平
本多 弘徳
市川 利光