| 摘要 |
PROBLEM TO BE SOLVED: To increase the rigidity of a support rail. SOLUTION: In the uniaxial actuator, respective rising walls 11b, 11b have rolling grooves 11d, 11d for rolling elements supporting the rollers 15, 15 in a row in parallel to the axial direction at the inside face 11c, 11c. And further, the rolling grooves 11d, 11d for the rolling elements are formed at the position where the height L2 of the rolling grooves 11d, 11d from these basal upper face 11a1 is positioned as L2<=(L1/2), when the height of the rising walls 11b, 11b from the basal upper face 11a1 is L1.
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