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:
Mar. 28, 1995
Filed:
Dec. 28, 1993
Akira Suzuki, Kanagawa, JP;
Jiami Pu, Tokyo, JP;
Magozou Hamamoto, Kanagawa, JP;
Kazuo Akagami, Kanagawa, JP;
Michiharu Naka, Kanagawa, JP;
Masahiro Takahashi, Kanagawa, JP;
Mamoru Aoki, Kanagawa, JP;
Hiroyuki Ito, Kanagawa, JP;
Masao Yamamoto, Kanagawa, JP;
Emiko Shiraishi, Kanagawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
To provide a ball bearing that insures reasonable endurance and which reduces the necessary torque for rotation while causing less fluctuations in torque, a synthetic resin cage of the ball bearing for retaining a plurality of balls so as to roll freely is impregnated with a lubricating oil having a viscosity of 10 to 150 mm.sup.2 /s at 40.degree. C. in an amount of 0.1 to 1.0% by weight of the cage, a film of the lubricating oil is formed in a thickness of 0.03 to 20 .mu.m on the surfaces of an inner race, an outer race, balls and the cage, and the amounts of the oiliness agent and the rust inhibitor that are to be contained in the lubricating oils are limited to the specified ranges.