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

    $65.85
    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: ATO-STEP-3917168
    Free Shipping Worldwide
    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

    Electrical Specification Model ATO39-1684A
    Step Angle 1.8°
    Holding Torque 3.6kg-cm(50oz.in)
    Voltage 2.8V
    Rated Current/phase 1.68A
    Phase Resistance 1.65Ω
    Inductance 4mH
    Rotor Inertia 54g-cm2
    Physical Specification Frame Size 42 x 42mm
    Length 39mm
    Shaft Diameter Φ5mm
    Shaft Length 22mm
    Motor Leads 4
    Weight 0.28kg
    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
    Quality Assurance Warranty Period 12 months
    Certificate CE, ROHs, ISO/SGS9001

     Nema 17 Stepper Motor Dimension (Unit=mm)

    Nema 17 stepper motors dimension

    L1=24mm, Lmax=39mm

    Nema 17 Stepper Motor Wiring Diagram

    Nema 17 stepper motors 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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