The AI-M-20MA is a compact 20mm × 20mm 2-phase stepper motor with closed-loop control and a 1.8/0.9-degree step angle. It delivers 4000 PPR resolution with A, B, Z, A/, B/, & Z/ outputs and a 0.183 Kgf.cm holding torque. It is compatible with AiS-D-20MA & AiC-D-20MA drives.