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:
Jan. 14, 2025
Filed:
Nov. 02, 2020
Applicant:
Ntn Corporation, Osaka, JP;
Inventors:
Assignee:
NTN CORPORATION, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16C 19/18 (2006.01); F16C 33/58 (2006.01); F16C 33/66 (2006.01);
U.S. Cl.
CPC ...
F16C 19/18 (2013.01); F16C 33/58 (2013.01); F16C 33/6633 (2013.01); F16C 2210/04 (2013.01); F16C 2240/54 (2013.01); F16C 2326/02 (2013.01);
Abstract
A hub bearingincluding an outer ringthat serves as a stationary side raceway ring, a hub wheeland an inner ringserving as a rotatable side raceway ring, ballsserving as a plurality of rolling elements disposed between a raceway surface of the stationary side raceway ring and a raceway surface of the rotatable side raceway ring, and grease that lubricates a rolling contact part between each of the raceway surfaces and the rolling elements. The surface roughness of at least one raceway surface selected from the raceway surface of the stationary side raceway ring and the raceway surface of the rotatable side raceway ring in the rolling contact part is 0.03 μm Ra or less.