<b>Product Parameters:</b> <br>Product name: Bipolar 42 Stepper Motor <br>Holding torque: 0.46 Nm/ 65 oz-in <br>Working voltage: DC 9-42V <br>Rated current: 1.7A <br>Resistance: 2.1 ohm <br>Inductance: 4mH <br>Rotor inertia: 55gcm2/ 0.30oz-in2 <br>Weight: 0.28kg <br>Length: 39.5mm/ 1.56 inch <br>Phrase: 2 <br>Step angle: 1.8° <br>Motor frame size: 42*42mm <br> <br><b>Wiring:</b> <br>Black (A+); Green (A-); Red (B+); Blue (B-) <br> <br><b>Application:</b> <br>Stage lighting; laser engraving; textile machinery; medical equipment; placement machine; non-standard equipment; 3D printer; automation equipment <br> <br><b>Warm Tips:</b> <br>Please note that this motor cannot be connected to the power supply directly. It should be connected to a constant current driver, otherwise, it will destroy the motor. <br>Please ensure that the output current is not higher than the rated current of the motor (1.7A) or exceed the working voltage range of the motor (DC 9-42V). <br> <br><b>Product Includes:</b> <br>1* 42 Stepper Motor