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:
Sep. 12, 2023
Filed:
Sep. 29, 2020
Ntn Corporation, Osaka, JP;
Nobukatsu Uchiyama, Shizuoka, JP;
Satoshi Goto, Shizuoka, JP;
NTN CORPORATION, Osaka, JP;
Abstract
The present invention addresses the problem of providing a method for measuring axial clearance of a wheel bearing device, with which it is possible to make a high-precision measurement of negative axial clearance. This method comprises: a step (S) for press-fitting an inner race (); a first negative axial clearance measurement step (S); a swaging step (S); an inner-race press-in amount measurement step (S); a first inner-race outer-diameter increment measurement step (S); a second inner-race outer-diameter increment calculation step (S); an outer-diameter increment difference calculation step (S); a first axial clearance decrement calculation step (S); a second axial clearance decrement calculation step (S); a third axial clearance decrement calculation step (S); and a second negative axial clearance calculation step (S).