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Helix Linear Technologies' NEMA 11 Single Stack Captive Lead Screw Stepper Motor Actuators integrate a NEMA 11 single stack bipolar stepper motor with a 0.188 inch diameter lead screw and built-in anti-rotation guide for precise, controlled stroke linear motion in a compact low-profile footprint. Available with 500 CPR encoder or no-encoder across multiple lead options and stroke lengths from 0.5 to 2 inches for medical devices, lab automation, robotics, and space-constrained positioning applications. U.S.-made.