no encoder

Helix Linear Technologies' BSA-11-E Single Stack Threaded Single Ball Return Ball Screw Stepper Motor Actuators without encoder integrate a NEMA 11 single stack bipolar stepper motor with a precision 6 mm diameter ball screw and threaded ball nut for accurate, compact open-loop linear motion in a low-profile footprint. Available in 2 mm and 6 mm lead options with optional 8N end machining for robotics, medical devices, semiconductor, and space-constrained automation applications where open-loop position control is sufficient. U.S.-made.