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RSR Series Direct Drive Rotary Stages

The RSR is a low profile, high precision rotary stage driven directly by an integrated brushless motor in place of a mechanical worm gear or belt drive.  Benefits include no backlash, better positioning sensitivity, higher speeds, smaller envelope, and no drive wear and maintenance.  This makes the RSR’s well suited for applications that require high rotational accuracy, excellent positioning sensitivity and repeatability, and fast move and settle times.

Position feedback is provided by a high resolution, hysteresis free, non-contact encoder mounted directly to the rotary stage hub.  Multiple interpolation options are available with resolutions down to 0.021 arc-sec.  For very high resolution feedback without sacrificing speed an encoder with an analog 1 volt p-p output is available for interpolation by the controller.  For ultra precision accuracy, the RSR series is designed to accept an optional dual readhead encoder.

A preloaded, circular crossed roller bearing gives the RSR good stiffness and load capacity within a low profile.  This precision bearing also gives the RSR its low axial radial runout errors, and low wobble errors.

To accommodate routing of wires or vacuum lines, or an optical pathway, the RSR has a large open aperture.

Available sizes: 50mm | 100mm | 150mm | 200mm | 300mm

Specifications

RSR Series Rotary Stage Dimension Drawings