Home/Technical Glossary/XY Stages XY Stages “XY Stages” apply to motion as in a mechanical system; generally referred to as X, XY, and XYZ. The basic function of a stage is to constrain motion to a defined direction. For a linear stage, this motion is, ideally, along a straight line. Motorized linear stages are used to precisely position objects along a single axis. They are comprised of a moving platform and stationary base joined by a bearing system. A motion controller is utilized to control position electronically. Motorized stages are particularly suited for high volume/high speed precision applications.