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    Nema 23 Bipolar Stepper Motor, 1A, 1.8 degree, 4 wires

    Cheap and brand new Nema 23 bipolar stepper motor, phase current 1A and resistance 4.8Ω, 0.65Nm holding torque, 1.8 deg. step angle (200 steps/rev), body in 46mm, manufacturer direct sale.
    SKU: ATO-M-STEPPER-246-1004A

    Nema 23 bipolar Stepper motor, 0.65Nm in 46mm, 1.8 degree, 2 phase and 4 wires, manufacturer direct sale.


    Basics Model ATO246-1004A
    Holding torque 0.65Nm
    Current/phase 1A
    Resistance 4.8Ω
    Step angle 1.8°
    Rotor inertia 120g.cm²
    Weight 0.5kg
    Length 46mm
    Motor leads 4
    Technical parameters Step Angle Accuracy ±5%(full step, no load)
    Resistance Accuracy ±10%
    Inductance Accuracy ±20%
    Temperature Rise 80℃ Max.(rated current, 2phase on)
    Ambient Temperature -10℃~+ 50℃
    Insulation Resistance 100MΩ Min 500VDC
    Dielectric Strength 500VAC for one minute
    Shaft Radial Play 0.06Max.(450g)
    Shaft Axial Play 0.08Max.(450g)


    Dimension Nema 23 L41-76

    Motor Connection

    Motor connection

    Tips: Velocity characteristic of stepper motor

    The rotational velocity of the stepper motor depends on pulse frequency, number of teeth and beats of rotor. Its angular velocity is in direct proportion to the pulse frequency. Meanwhile, the time synchronizes with the pulse. Therefore, under the circumstance that there is certain number of teeth and beats of teeth of rotor, the necessary velocity can be obtained by only controlling the pulse frequency. As the stepper motor is started by relying on its synchronic torque. To avoid step out, start frequency is not high. Especially, along with the increase in power, the diameter of the rotor increases and so does the inertia. The difference between start frequency and maximum operating frequency might be more than 10 times.
    To make full use of the rapid performance of motor, the motor is generally started at low frequency lower than the start frequency, and then the pulse frequency is increased gradually until the expected velocity is reached. To choose the change rate, it is necessary to ensure the step out doesn’t occur and acceleration time should be shortened as far as possible. To ensure the positioning accuracy of the motor, the velocity of the motor should be gradually reduced to the velocity (equal to or larger than the start velocity) at which the motor can stop from the maximum velocity.

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