| 摘要 |
PROBLEM TO BE SOLVED: To provide a motion device capable of enhancing efficiency for assemblage or the like.SOLUTION: A motion device 1 includes a track body 10, a moving body 21, a plurality of rolling elements 70, and a central retainer 81 arranged in the moving body 21 to cover the rolling elements 70 or a rolling element coupler 72, the moving body 21 includes a side through-hole 24 from a space between rolling element rolling faces 28 toward an outer side face 21k, and the central retainer 81 includes a filling-closing part 84 for closing the side through-hole 24. |
