抄録
The present paper reports the effect of the slight eccentricity in the rotational axis on the ball motion of a thrust ball bearing. The measurement of the ball motion has been done three-dimensionally through the Hall element device under the condition that the rotational axis has a small restriction in radial direction due to a slight discrepancy between the upper and lower race. As a result it has become clear that the motion of a ball can remain stable even under a lubricated condition just like the phenomena of the case of a four point contact ball bearing, if freedom of the ball motion is prevented radially by its eccentricity.
