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. 17, 2019
Filed:
Oct. 22, 2015
Kyodo Yushi Co., Ltd., Fujisawa-shi, Kanagawa, JP;
KYODO YUSHI CO., LTD., Fujisawa-Shi, Kanagawa, JP;
Abstract
The invention provides a grease composition for rolling bearings that can exhibit improved bearing life that can secure the low noise performance under high temperature conditions, and a rolling bearing where the above-mentioned grease composition is enclosed. The grease composition for rolling bearings includes a base oil, a urea thickener and a metal deactivator. The base oil has an aniline point of 110° C. or more. The urea thickener is at least one kind of diurea compound selected from the group consisting of diurea compounds represented by formula (1): R—NHCONH—R—NHCONH—R(wherein Rand R, which may be the same or different from each other represent a Calkyl group, a Ccycloalkyl group or a Caryl group, and Rrepresents a bivalent aromatic hydrocarbon group having 6 to 15 carbon atoms.)