Product Description: The company planetary gear and sun gear materials used SCM4 materials, hard roll, carburizing, heat treatment to 50-55HRC hardness and tooth surface grinding, precision gears to ensure the best wear resistance, toughness, make longer life. Cost-effective stepper motor can be used with or servo motor use, reduce speed, high torque, increase motor rotor inertia, increase rigidity, reduce the startup and stop positioning time and motor function