The AI-M-28LB is a precision 28mm × 28mm 2-phase stepper motor with closed-loop control and a 1.8/0.9-degree step angle. It has a 16000 PPR resolution, A, B, Z, A/, B/, & Z/ outputs, and a 1.63 Kgf.cm holding torque, making it a reliable choice for high-precision motion control. It is compatible with AiS-D-28LB & AiC-D-28LB drives.