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    Nema 17 Stepper Motor Linear Actuator, 2 phase, 4V, 0.95A

    This stepper motor linear actuator with external nut and internal nut (non-captive) two versions. The motor part is 42mm body 1.8 degree 0.95A 2-phase Nema 17 stepper motor, it works with a 152mm length lead screw, the linear travel is 0.02mm per revolution.
    SKU: ATO42H33-0956
    Delivery date: 6-12 days

    2 phase 4V, 0.95A Nema 17 Stepper Motor Linear Actuator with higher performance and lower cost. To meet the needs of a wide range of linear motion applications, two stepper motor linear actuator styles are available:
    Non-captive shaft has a threaded shaft that extends through the motor and moves axially as the motor rotates.
    External shaft has a rotating screw, integral to the motor's rotor, that moves the nut axially along the threaded shaft.
    Stepper Motor Linear Actuator 

    Model Type External Shaft Non-Captive Shaft
    42H33-0956AST 42H33-0956GTS
    Weight 0.22 Kg
    Length 33 mm
    Phase 2 phase
    Step Angle 1.8°
    Rated Voltage 4 V
    Rated Current 0.95 A
    Resistance 4.2 Ω
    Holding Torque 22 Oz-in
    Number of Leads 6
    Rotor Inertia 35 g-cm2

    Select Leadscrew
    Choose your stepper motor linear actuator screw from one of the available options:

    Screw Diameter Lead Travel Per 1.8 Step
    (in) (mm) (in/rev) (mm/rev) (in/step) (mm/step)
    0.25 6.35 0.05 1.27 0.00025 0.00635
    0.25 6.35 0.1 2.54 0.0005 0.0127
    0.25 6.35 0.25 6.35 0.00125 0.03175
    0.25 6.35 0.5 12.7 0.0025 0.0635
    0.25 6.35 1 25.4 0.0068 0.172
    0.315 8 0.079 2 0.00039 0.01
    0.315 8 0.157 4 0.00079 0.02
    0.315 8 0.315 8 0.00157 0.04
    0.315 8 0.787 20 0.00394 0.1

    Stepper Motor Linear Actuator Dimension
    1. Non-captive shaft style
    non captive shaft nema 17 stepper motor linear actuator dimension
    2. External shaft style
    nema 17 external shaft stepper motor linear actuator dimensionTips: Screw Pitch of stepper motor linear actuator
    The step length of linear screw stepper motor depends on the step angle and pitch between the interoperable internal thread nut and lead screw. The steep-pitch thread produces larger step length than the small pitch thread. However, for a given stepping rate, small pitch thread can provide greater propulsive force. When the motor is out of power, steep-pitch thread can easily be driven in the opposite direction while the small pitch thread cannot. There must be a certain degree of freedom the rotor and the screw in order to guarantee the high work efficiency, which requires a certain gap between them, about 0.03 to 0.08 mm axial gap (also called reverse gap). Generally, the larger the helical pitch is, the larger the gap is.

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