| 摘要 |
<p>A side cap 17 is formed by two ball circulating member-forming members 23 and 23 divided from each other along a division line PL extending in a direction of advancing of balls 15 passing through the interior of the side cap. The side cap 17 includes ball scoop-up portions 24 each for scooping-up the balls 15 from a ball track passageway 8 at one side thereof, and a ball circulating passageway 27 (formed integrally with the ball scoop-up portions) for returning the balls 15, scooped-up at the ball scoop-up portion 24, to the ball track passageway 8 at the other side thereof. The side cap has notch portions 25 formed respectively at scoop-up proximal end portions 24a thereof integrally connecting the ball scoop-up portions 24 respectively to the ball circulating passageway 27. The division line PL is formed in such a position that it beforehand cuts the notch portion 25 at the one side and the notch portion 25 at the other side.</p> |
