These 6x6 Vacuum Cube Stage Plates allow dynamic fine location adjustment of your test piece within an evacuated Vacuum Cube. These plates permit 0.50” (13mm) of X and Y axis to travel over hardened steel linear bearings for precision motion and long life. The stage plate itself is spring tensioned in both axes, eliminating backlash when reversing travel direction. High quality Mitutoyo micrometer heads will move your target horizontally 0.025” for each complete revolution of the head, with repeatable positioning of 0.0001”, through high performance viton shaft seals. The heads are also compatible with high precision motor actuators if needed (please call for more information). On the vacuum side, the plate and moving blocks are machined from 6061-T6 aluminum with vented Stainless Steel 304 or 316 fasteners, eliminating virtual leaks. Air-side metal surfaces are powder coated blue. Although the self-tensioning system allows this plate to be mounted in any orientation, the optimum loading direction is with the mic supporting the load due to gravity. The load limit when mounted flat is 4lbs, and 2lbs when mounted vertically.