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. 03, 2009
Filed:
Aug. 16, 2006
Hiroki Matsuyama, Nara, JP;
Kouji Kawaguchi, Izumi, JP;
Hiroyuki Ohshima, Kashihara, JP;
Naoki Masuda, Nara, JP;
Kazutoshi Toda, Tondabayashi, JP;
Hiroki Matsuyama, Nara, JP;
Kouji Kawaguchi, Izumi, JP;
Hiroyuki Ohshima, Kashihara, JP;
Naoki Masuda, Nara, JP;
Kazutoshi Toda, Tondabayashi, JP;
Jtekt Corporation, Osaka-shi, Osaka, JP;
Abstract
According to the invention, there is provided a tapered roller bearing in which, where D represents a larger end diameter of the tapered roller and L represents a roller length thereof, the roller length L is 18 mm or smaller, and a ratio of the large end diameter and the roller length of the tapered roller which is expressed by D/L is in the range of 0.55 to 0.9. In addition, respective raceway surfaces of the outer ring and the inner ring and rolling contact surfaces of the tapered rollers are crowned, and a total crowning amount is set to be 50 μm or larger, an outer ring crowning rate is set to be 40% or larger, and a roller crowning rate is set to be 20% or smaller.