| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bearing unit for watch, a movement and a portable watch which maintain a pitch distance between spheres at a constant value and can reduce manufacturing man-hours and manufacturing costs. <P>SOLUTION: A bearing body 181 is provided with at least three or more of spheres 183 arranged along the circumferential direction, contactably with the outer peripheral surface of a tapered part 147 and an outer ring 185 holding the spheres 183 between itself and the tapered part 147. The outer ring 185 is provided with plural support faces 187 supporting the spheres 183 each rollably at a fixed interval along the circumferential direction. <P>COPYRIGHT: (C)2012,JPO&INPIT |
