| 摘要 |
PROBLEM TO BE SOLVED: To provide a ball chain module having reduced manufacturing cost by allowing manufacture and assembly with less difficulty in the way of circulating rolling elements while successfully rolling with lower friction resistance. SOLUTION: One type of ball change module having the number of rolling elements held therein in sequence comprises semi-fitting chains each of which consists of a spacer for holding the rolling elements at preset intervals when rolling, ends located at both ends of the ball change module for holding the rolling elements in the ball change module at the inside and circumscribing other rolling elements at the outside, and a link band for linking the spacer to the ends into one unit. The semi-fitting chains are combined to form one complete ball chain module. COPYRIGHT: (C)2005,JPO&NCIPI
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