Z-axis stage UPL-120 series

motorizedcrossed rollerhigh-accuracy

• Positioning repeatability to 0.05 µm • High load capacity to 20 kg • Direct-measuring linear encoder option • Servo motor and stepper motor options The UPL-120 vertical translation stage platform provides high precision Z-axis motion with sub-micron resolution, for loads up to 20 kg. Unlike vertically mounted linear stages, the high-stiffness platform concept allows for a much lower profile with 360-degree access to its payload while avoiding moment loads that can affect bearing performance and/or straightness of motion. Elevation Stage with Excellent Straightness and Flatness of Motion The vertical stage platform design provides excellent straightness and flatness, with better pitch and yaw performance compared to vertically mounted linear positioning stages, where the cantilevered load can cause deflections in the supporting linear bearings. High Resolution Linear Motion with Closed-Loop Servo Motors or Stepper Motors The vertical stage platform is guided by precision cross-roller bearings and driven by a high-resolution, low friction ball screw through stepper motors or servo motors. The precision bearings enhance platform stability and stiffness while integrated optical limit switches protect the mechanics against over travel conditions. Direct-measuring linear encoders (or rotary encoders on the lower cost variants) provide high resolution position feedback for closed-loop operation with a motion controller. The highest performance variant of the UPL-120 vertical linear translation stage features 5 nanometer encoder resolution. For open-loop position control, a lower cost stepper motor Z-stage variant is also available.