Ntn Corporation

Satoshi Goto

Nobukatsu Uchiyama

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).

Growing community of inventors

Shizuoka, Japan

Satoshi Goto