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:
Feb. 28, 2006
Filed:
Aug. 29, 2001
Hiromichi Takemura, Kanagawa, JP;
Yasuo Murakami, Kanagawa, JP;
Hiromichi Takemura, Kanagawa, JP;
Yasuo Murakami, Kanagawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
A dynamic equivalent load P is calculated from data information of a rolling bearing. Next, a reliability coefficient ais determined, a lubrication parameter acorresponding to a used lubricant is calculated, and a contamination degree coefficient ais determined in consideration of a material coefficient. A fatigue limit load Pu is calculated on the basis of the data information. Thereafter, a load parameter {(P−Pu)/C}·1/ais calculated. On the basis of the lubrication parameter aand the load parameter {(P−Pu)/C}·1/a, a life correction coefficient ais calculated with reference to a life correction coefficient calculation map. The bearing life Lis calculated by L=a·a·(C/P).