The SR50 and PR50 compact rotation stages are designed to rotate optical components up to 1 inch in diameter such as polarizers, wave plates, or wedges. The small size allows use in confined spaces such as laser cavities, disk texturing machines, or manufacturing areas for fiber optical components. Stepper motors offer better holding torque than DC motors and can hold position with power off.
Compact, low-profile rotation stage for 1-inch diameter optics
Proprietary ball bearings provide smooth motion with low wobble
High speed (PR50) and high resolution (SR50) versions
The SR50PP stage features minimum incremental motion of 0.004° achieved in half-step mode. The open-loop stepper motor is folded inside the stage body to give an extremely small footprint for a stage at this level of precision. The stage is equipped with a hardware origin, allowing the stage to return to a reference home position to within 0.01°. It can run in continuous rotation mode. DC servo version SR50CC
The PR50PP stages is a cost-efficient alternative to the SR50PP for applications that do not require the high-resolution and precision of the SR50, or for applications that could benefit from higher speeds up to 20°/s. This open-loop stepper motor stage features angular resolution of 0.02°, achieved in half-step mode. It is equipped with a hardware origin allowing for continuous rotation of 360°. DC servo version PR50CC
The central aperture of SR50 and PR50 stages is 1.063-20 threaded. Each stage is shipped with two retaining rings to allow mounting of any Ø25.4 mm diameter optics within the aperture. Four M3 holes allow for attachment of custom top plates.
bracket can be used for vertical mounting of a PR50 or SR50 stage.
Two SR50 stages with an EQ45
Proprietary Ball Bearing Design
The lightweight, low profile design incorporates an aluminum body with pre-loaded ball bearings. This proprietary ball bearing design provides smooth rotation with minimal wobble. A precision ground worm gear produces consistent driving torque to the rotating carriage and eliminates variations in motor current.
Metrology Report Included at No Additional Cost
Newport guarantees specification values which are measured and recorded following ASME B5.57 and ISO 230-2 standards. The typical performance values are two times better than the guaranteed specifications.
SR50 Load Characteristics
PR50 Series Load Characteristics
Compatible motion controllers for these stepper motor driven stages are:
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