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:
May. 28, 2019
Filed:
Aug. 31, 2017
Nsk Ltd., Tokyo, JP;
Makoto Koganei, Fujisawa, JP;
Daisuke Tominaga, Fujisawa, JP;
Hiroshi Sakamoto, Fujisawa, JP;
Shunichi Kiyono, Fujisawa, JP;
Mamoru Aoki, Fujisawa, JP;
NSK LTD., Tokyo, JP;
Abstract
A tapered roller bearing () is includes an outer ring () having an outer ring raceway surface () on the inner peripheral surface thereof, an inner ring () having an inner ring raceway surface () on the outer peripheral surface thereof, and a plurality of tapered rollers () arranged in a rollable manner between the outer ring raceway surface () and the inner ring raceway surface (). A large flange () is formed on an end portion of the inner ring () on a large-diameter side of the inner ring, and the inner ring raceway surface () continuously extends to the end face () of the inner ring () on a small-diameter side of the inner ring. The contact angle (α) is 37°30' to 50°. In this manner, the tapered roller bearing having high moment rigidity and long life can be provided.