Ntn Corporation

Kazuhiro Kimpara

Hiroshi Matsunaga

A pitch cone angle measurement method includes bringing an abutment portion into abutment against ridges, and bringing another abutment portion into abutment against the ridges at a position separated in a direction orthogonal to a rotation axis direction of the rotation power transmitting element by a radial distance from a position at which the ridges and the abutment portion are brought into abutment against each other. The method also includes measuring a distance in the rotation axis direction between the position at which the abutment portion is brought into abutment against the ridges and a position at which the other abutment portion is brought into abutment against the ridges, and calculating a pitch cone angle of the rotation power transmitting element based on the distance in the rotation axis direction and the predetermined radial distance.

Growing community of inventors

Shizuoka, Japan

Kazuhiro Kimpara