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Title:
ROLLER BEARING, ROLLER BEARING UNIT, MOTOR, ROLLER BEARING MANUFACTURING METHOD, AND ROLLER BEARING SILENCING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/209598
Kind Code:
A1
Abstract:
In the present invention, a roller has: beveled sections formed on either axis-wise edge of the roller outer circumferential surface; and a roller sloping surface. In a cross-section taken along a plane containing the rotational axis of the roller and the bearing center axis, the relation α<θ <β is satisfied when: a radial position on the roller sloping surface that corresponds to an edge part of a guide surface is a first position, and a radial position that corresponds to a border between the beveled sections and the roller sloping surface is a second position; and an angle of intersection between a tangent to the roller sloping surface and the normal to the rotational axis at the first position is α, an angle of intersection between a tangent to the roller sloping surface and the normal to the rotational axis at the second position is β, and an angle of intersection between the guide surface and the normal to the bearing center axis is θ.

Inventors:
MURAI TAKASHI (JP)
KAGOTA YOSHINARI (JP)
Application Number:
PCT/JP2022/009565
Publication Date:
October 06, 2022
Filing Date:
March 04, 2022
Export Citation:
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Assignee:
NSK LTD (JP)
International Classes:
F16C19/26; F16C19/36; F16C23/06; F16C33/34; F16C33/58
Foreign References:
JP2013117249A2013-06-13
JP2000161367A2000-06-13
JP2006316917A2006-11-24
JP2000018242A2000-01-18
JPS512856A1976-01-10
JP2010001992A2010-01-07
JPS5822515U1983-02-12
JP2004176745A2004-06-24
JP2003021145A2003-01-24
JP2005003121A2005-01-06
JPH09291942A1997-11-11
JPH0658334A1994-03-01
JPH11344035A1999-12-14
JPS62270825A1987-11-25
JP2021062261A2021-04-22
JP2021062262A2021-04-22
Other References:
See also references of EP 4317721A4
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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