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. 07, 2000
Filed:
Sep. 17, 1998
Yukio Sato, Kanagawa, JP;
Tetsu Takehara, Kanagawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
An inner ring of a tapered roller bearing is provided with an groove-like recess formed between an outer race surface and a large rib surface. A Chamfer is provided between a large-diameter-side end surface and a rolling surface in each tapered roller. (1) The height from the outer race surface of the inner ring to a contact position where the inner ring large rib surface contacts with the large-diameter-side end surface of each roller is set to be 6 to 9.5% of the diameter of the roller large-diameter-side end surface. (2) The chamfer of the large-diameter-side end surface of each roller is set to be 30 to 60% of the contact position height. In addition, (3) the size of the recess in the large rib surface side of the inner ring is set to be not larger than 75% of the chamfer of the large-diameter-side end surface of each roller.