The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 2021
Filed:
Apr. 10, 2019
Nsk Ltd., Tokyo, JP;
Naoki Matsuyama, Kanagawa, JP;
Sumio Sugita, Kanagawa, JP;
Yu Koiwa, Kanagawa, JP;
Takaaki Anzai, Kanagawa, JP;
Tamotsu Misawa, Kanagawa, JP;
Masaru Terasaki, Kanagawa, JP;
NSK LTD., Tokyo, JP;
Abstract
A rolling bearing includes an inner ring having an outer surface, an outer ring having an inner surface, a plurality of rolling elements rotatably disposed between the inner ring and the outer ring, and a retainer for retaining the rolling elements. The retainer is made of a resin material and is positioned with respect to the inner surface of the outer ring or the outer surface of the inner ring. The retainer includes a pair of annular portions axially arranged in parallel and a columnar portion coupling the annular portions. Then, the rolling bearing satisfies the following expression:AI=LH/dm≥0.025LH/dm≥0.025 mmin which H is a radial length of a section of the annular portion, L is an axial length of the same, and dm is PCD of the rolling element.