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:
Nov. 05, 2019
Filed:
Mar. 09, 2016
Ntn Corporation, Osaka, JP;
Masaharu Inoue, Shizuoka, JP;
Kazuhiro Watanabe, Shizuoka, JP;
Tomoyoshi Izutsu, Shizuoka, JP;
Takayuki Kawamura, Mie, JP;
Hiroyuki Amari, Chiba, JP;
Minoru Hasegawa, Chiba, JP;
Kouhei Nakano, Chiba, JP;
NTN CORPORATION, Osaka, JP;
Abstract
It is an object of the present invention to provide a grease composition, for an outer ring rotation type rolling bearing, which is capable of satisfying all of high-temperature durability, low-temperature property, peeling resistance, and rust-preventive property. A grease composition () to be enclosed in the outer rig rotation type rolling bearing for use in automotive electric auxiliary machines contains base oil, a thickener, a peeling-resistant additive, a wear-resistant additive, and a rust-preventive agent. The base oil is mixed oil of trimellitic acid ester oil and synthetic hydrocarbon oil mixed therewith in a mass ratio of (70:30) to (90:10). The thickener consists of a diurea compound shown by a formula (1).R—NHCONH—R—NHCONH—R  (1)wherein a reference symbol Rdenotes a divalent aromatic hydrocarbon group having a carbon number of 6 to 15, and a reference symbol Rdenotes a cyclohexyl group.