UMR Series Precision Double-Row Ball Bearing Linear Stages feature steel construction for high stability and rigidity. The ball bearings and precision-ground bearing surfaces provide exceptional linear travel, with angular deviation better than 100-200 µrad. UMR3, UMR5, and URM8 Series Stages have double-row ball bearings making them an excellent choice for carrying high loads. UMR12 Series Stages contain a single row of ball bearings. In all UMR stages, the moving carriage is preloaded by two springs to ensure constant micrometer contact for smooth, backlash-free motion.
Multiple drive options cover the range of precision positioning. Standard BM Series Micrometers provide 1 µm sensitivity, while DM Series Differential Micrometers offer 0.1 µm. For coarse motion with position locking, a fixed positioning kit replaces the micrometer with two opposing adjustment screws and lock nuts. An optional carriage locking kit includes a screw that mounts in the stage body opposite the micrometer. Motorized actuators can be added for precision motion control.
All like-sized stages (except the UMR5.5) can be easily can be easily stacked in an XY configuration and mounted to a table or breadboard (M-PBN mounting base required, except UMR8 and UMR12 Series). Multi-axis stage configurations are easily assembled using EQ Series angle brackets. UMR ...

UMR Series Precision Double-Row Ball Bearing Linear Stages feature steel construction for high stability and rigidity. The ball bearings and precision-ground bearing surfaces provide exceptional linear travel, with angular deviation better than 100-200 µrad. UMR3, UMR5, and URM8 Series Stages have double-row ball bearings making them an excellent choice for carrying high loads. UMR12 Series Stages contain a single row of ball bearings. In all UMR stages, the moving carriage is preloaded by two springs to ensure constant micrometer contact for smooth, backlash-free motion.
Multiple drive options cover the range of precision positioning. Standard BM Series Micrometers provide 1 µm sensitivity, while DM Series Differential Micrometers offer 0.1 µm. For coarse motion with position locking, a fixed positioning kit replaces the micrometer with two opposing adjustment screws and lock nuts. An optional carriage locking kit includes a screw that mounts in the stage body opposite the micrometer. Motorized actuators can be added for precision motion control.
All like-sized stages (except the UMR5.5) can be easily can be easily stacked in an XY configuration and mounted to a table or breadboard (M-PBN mounting base required, except UMR8 and UMR12 Series). Multi-axis stage configurations are easily assembled using EQ Series angle brackets. UMR stages are compatible with UTR and URM Rotation Stages, BGM Goniometers, and SL Series Mirror Mounts.