A stepper motor or step motor or stepping motor is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor’s position can then be commanded to move and hold at one of these steps without any position sensor for feedback (an open-loop controller), as long as the motor is carefully sized to the application in respect to torque and speed.

Sunsynk 5kW Hybrid Inverter + free WiFi dongle
2.2kW Air Cooled Spindle Motor for CNC Router 220V – ER20 Collet + 2.2kW VFD Inverter 

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