no encoder

Helix Linear Technologies' BSA-23-E Double Stack Threaded Single Thread Return Ball Screw Stepper Motor Actuators without encoder integrate a NEMA 23 double stack bipolar stepper motor with a precision 10 mm diameter ball screw and threaded ball nut for high-torque, accurate open-loop linear motion. Available in 2, 3, 4, and 10 mm lead options with optional 8N end machining for industrial automation, robotics, semiconductor, and medical applications where open-loop position control is sufficient. U.S.-made.