The AI-M-42SA-B is a 42mm × 42mm 2-phase stepper motor with closed-loop control and a 1.8/0.9-degree step angle. It offers 10,000 PPR resolution, A, B, Z, A/, B/, & Z/ outputs, and a 2.55 Kgf.cm holding torque, and comes with a built-in brake for enhanced control. Compatible with AiS-D-42SA-B & AiC-D-42SA-B drives.