Nsk Corporation

Tsuyoshi Koshi

Takashi Ogawa

Shoji Noguchi

Yasuhisa Terada

Takayuki Yatabe

Hiroya Achiha

Hisato Yamamoto

An outer ringis formed so as to have a large thickness and the pitch circle diameters Dp of ballsare shifted to the inside diameter side of the present ball bearing. The radiuses of curvature Ro, Ri of the section shapes of an outer ring racewayand an inner ring racewayare increased with respect to the diameter Db of the balls. At the same time, the diameter Db of the ballsand the thickness of an inner ringare not set excessively small to thereby be able not only to prevent Brinell impressions from being formed in the outer ring racewaybut also to prevent the inner ringfrom being damaged or cracked.

Ball bearing

An outer ring is formed so as to have a large thickness and the pitch circle diameters Dp of balls are shifted to the inside diameter side of the present ball bearing. The radiuses of curvature Ro, Ri of the section shapes of an outer ring raceway and an inner ring raceway are increased with respect to the diameter Db of the balls . At the same time, the diameter Db of the balls and the thickness of an inner ring are not set excessively small to thereby be able not only to prevent Brinell impressions from being formed in the outer ring raceway but also to prevent the inner ring from being damaged or cracked.

An outer ring is formed so as to have a large thickness and the pitch circle diameters Dp of balls are shifted to the inside diameter side of the present ball bearing. The radiuses of curvature Ro, Ri of the section shapes of an outer ring raceway and an inner ring raceway are increased with respect to the diameter Db of the balls At the same time, the diameter Db of the balls and the thickness of an inner ring are not set excessively small to thereby be able not only to prevent Brinell impressions from being formed in the outer ring raceway but also to prevent the inner ring from being damaged or cracked.

Growing community of inventors

Kanagawa, Japan

Tsuyoshi Koshi