| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electric cylinder having a constitution that required stroke amount is provided, operating sound is extremely small, and dusting and leakage of grease are prevented. SOLUTION: A smooth working is secured by providing this cylinder with a basic constitution that a screw shaft coaxially arranged within a rotor of a motor is screwed, advanced and retreated by rotation of a nut part connected or integrated to/into the rotor and storing solidified type grease within the nut part, that is, arranging the solidified type grease for forming a female screw part screwable to the screw shaft after solidified in a grease reservoir part for storing grease.</p> |
