Rtelligent Nema 23 57AM13ED 1.3N.M 4.0A 2 Phase Hybird CNC Closed Loop Stepper Motor Easy Servo Motor Step-servo with Encoder - AliExpress
NEMA 23 Closed Loop Stepper Motor System-Hybrid Servo Kit, 32 bit DSP Based: 282 oz-in - Amazon.com
NEMA23 57mmm Series 23CF3p High Torque Low Vibration Easy Servo Motor 3n. M Closed Loop Stepper Motor - China 3 Phase Hybrid Stepper Servo Motor, 1.2degree 57mm Closed Loop Electric Motor