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    Nema 17 Bipolar Stepper motor, 2.8V 1.68A, 2 phase 4 wires

    $35.85
    This bipolar Nema 17 stepper motor is most popular, it with 1.8 deg. step angle (200 steps/revolution). Each phase draws 1.68A, allowing for a holding torque of 50 oz-in.
    SKU: ATO39-1684A
    Delivery date: 6-12 days

    Nema 17 bipolar stepper motor, 2.8V 1.68A, 2 phase 4 wires, it with 1.8 deg. step angle (200 steps/revolution), brand new and direct sale by manufacturer.
    Specifications

    Basics Model ATO39-1684A
    Step Angle 1.8°
    Length 39mm
    Weight 0.28kg
    Voltage 2.8V
    Current 1.68A
    Resistance 1.65Ω
    Inductance 4mH
    Motor Leads 4
    Rotor Inertia 54g-cm2
    Maximum Static Torque 50oz-in/3.6kg-cm
    Technical parameters Step Angle Accuracy ±5% (full step, no load)
    Resistance Accuracy ±10%
    Inductance Accuracy ±20%
    Temperature Rise 80℃ Max. (rated current, 2 phase on)
    Ambient Temperature -10℃~+50℃
    Insulation Resistance 100MΩ Min. 500VDC
    Dielectric Strength 1Min. 500VAC·5mA
    Shaft Radial Play 0.06Max. 450g
    Shaft Axial Play 0.08Max. 450g

    Nema 17 dimensions wiring diagram
    Tips: Why the torque of the stepper motor is reduced along with the rise in rotational velocity?
    When the stepper motor rotates, the inductance of each phase winding of motor will form a reverse electromotive force. The higher the frequency the larger the reverse electromotive force. Under its role, the the phase current of motor is reduced along with the increase in frequency rate (or velocity), thus the torque decreases.

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