Abstract: A cross roller bearing includes an outer ring, an inner ring relatively rotatable with respect to the outer ring, and a plurality of rollers accommodated in a roller circulation passage formed between an outer ring side roller rolling groove formed to the outer ring and an inner ring side roller rolling groove formed to the inner ring so that rotational axes of the rollers intersect each other, and a gear is formed integrally with either one of the outer and inner rings.

Abstract: A hypoid gear device is provided with a backlash eliminating unit arranged between a driven wheel and a driving pinion to be meshed with the driven wheel. The backlash eliminating unit includes a driven pinion mounted on the same shaft as that of the driving pinion so as to be meshed with the driven wheel, and an elastic member urging the driven pinion on the same shaft of the driving pinion in the direction reverse thereto.

Abstract: Provided is a shaft member capable of minimizing the occurrence of noise by positively attenuating vibration acting on a metal shaft member having spline grooves and spiral grooves axially formed therein. To attain such an object, a shaft member includes a metal shaft main body having a hollow portion and a ceramic material serving as a vibration absorbing member which fills the hollow portion of the shaft body with no gaps. The ceramic material is filled into the hollow portion of the shaft main body in a powder, granular, or fluid state, and formed within the hollow portion into a shape matching the hollow portion.