Abstract
Two types of guideways were developed as those for machine tools; dynamically pressurized guideway and partially floated gudeway. The first guideway utilized a newly developed analysis program, and has features that it is of split type and its slidway shape goes gradually narrow across the center width. It restrains the guideway from floating and tilting. It also restrains friction force generated. The second one is futured with our original mechanism which is an oil-lift style employing technologies of statically pressurized guideways. It leads to low-friction and high-accuracy feed.
