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. 12, 2016
Filed:
Dec. 16, 2008
Kenta Sakaguchi, Iwata, JP;
Kenta Sakaguchi, Iwata, JP;
NTN CORPORATION, Osaka, JP;
Abstract
A rolling bearing includes a plurality of rolling elements disposed between an inner race and an outer race and a retainer retaining the rolling elements. Lubricating grease is sealed in the bearing in an amount of not less than 20% of an entire spatial volume of an interior of the rolling bearing and not more than 80% of a stationary spatial volume of the interior of the rolling bearing. The lubricating grease includes a base oil having a dynamic viscosity at 40° C. of 13-73 cSt, and a thickening agent of aromatic urea family. The entire spatial volume is an entire interior volume of the bearing minus a total volume of the rolling elements and the retainer, and the stationary spatial volume is a portion of the entire spatial volume where neither the rolling elements nor the retainer passes while the bearing is rotating.