Title:
ROLLING-BEARING CAGE AND ROLLING BEARING
Document Type and Number:
WIPO Patent Application WO/2021/215447
Kind Code:
A1
Abstract:
In a rolling-bearing cage (6), pockets (12) for holding balls (5) are formed at a plurality of circumferential positions of a ring-like body (10). In a cross section of the ring-like body cut along a plane including the centers of the pockets (12) and perpendicular to the cage axis, an outer-diameter-side radial guide gap (δ1) that is a gap in the radial direction of the ring-like body (10) between each of pocket opening edges (10a) on an outer-circumferential-surface side of the ring-like body (10) and each of the balls (5) is 1 to 2% of the diameter d5 of the ball (5). An inner-diameter-side radial guide gap δ2 that is a gap in the radial direction of the ring-like body (10) between each of pocket opening edges (10b) on an inner-circumferential-surface side of the ring-like body (10) and each of the balls (5) is at least 1.5-times the outer-diameter-side radial guide gap δ1. A band width H, which is the radial dimension of the ring-like body (10), is 40 to 45% of the diameter d5 of the ball (5).
Inventors:
ISHIDA HIKARU (JP)
TSUJI NAOAKI (JP)
ITO CHIHARU (JP)
TSUJI NAOAKI (JP)
ITO CHIHARU (JP)
Application Number:
PCT/JP2021/016077
Publication Date:
October 28, 2021
Filing Date:
April 20, 2021
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C19/06; F16C33/32; F16C33/38
Foreign References:
| JP2006090489A | 2006-04-06 | |||
| JP2014040901A | 2014-03-06 | |||
| JP2011007288A | 2011-01-13 | |||
| JPH07332374A | 1995-12-22 |
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
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