<p>low self-inductance reactance, responsive and can avoid system error.</p> <p>LOW NOISE: stepper motor kit is made with introduced German craftsmanship and there is rotor rubber covering the rotor, effectively reduce the noise.</p> <p> \u0026 TOUGH: tough and . And the matte texture in the side wall can increase friction.</p> <p>WIDE APPLICATION: This small motors can be used in area, such as stage lighting; engraving; textile machinery; equipment; placement machine; non-standard equipment; 3D printer; automation equipment, and etc..</p> <p>Product name: Bipolar 42 Stepper Motor</p> <p>Holding torque: 0.46 Nm\/ 65 oz-in</p> <p>Working voltage: DC 9-42V</p> <p>Rated current: 1.7A</p> <p>Resistance: 2.1 ohm</p> <p>Inductance: 4mH</p> <p>Rotor inertia: 55gcm2\/ 0.30oz-in2</p> <p>Weight: 0.28kg</p> <p>Phrase: 2</p> <p>Step angle: 1.8 degree</p> <p>Wiring:</p> <p>Black (A+); Green (A-); Red (B+); Blue (B-)</p> <p>Application:</p> <p>Stage lighting; engraving; textile machinery; equipment; placement machine; non-standard equipment; 3D printer; automation equipment</p> <p>colour:black</p> <p>Material:metal</p> <p>size:42x42x40mm</p> <p>Package Contents:</p> <p>1* 42*42*34 stepper motor</p> <p>1* Link line</p> <p>Warm Tips:</p> <p>Please note that this motor cannot be connected to the power supply directly. It should be connected to a constant current driver, otherwise, it the motor.</p> <p>Please 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).</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>