| 摘要 |
<p>A linear motion guide apparatus equipped with a plurality of rows of ball chains which can be assembled easily and can provide a very smooth circulation of balls. Ball holding portions (23, 23) with which one of the sides of each ball row (3) aligned along a load ball rolling groove (10) engages when moving blocks (4) are extracted from track rails (1) are provided to the moving blocks (4), and the combination of the ball holding portions (23, 23) and a plurality of rows of ball chains (20) prevents fall-off of the balls of each ball row (3, 3) and prevents also dangling of the end portions of a plurality of rows of ball chains (20).</p> |
