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    Nema 17 Closed Loop Stepper Motor, 2 Phase, 2A, 0.5N·m

    5 out of 5 based on 5 reviews | Write a review
    Factory price Nema 17 closed loop hybrid stepper motor with encoder for CNC machine, 3D printer and robot arm. 2 phase 4 wire, rated current 2A, step angle 1.8°, full step and no load, motor length 68mm, 5mm shaft size, holding torque at 0.5N·m.
    SKU: ATO-STEP-17CL200
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Closed loop bipolar stepper motor is a permanent magnet electric motor that converts electrical pulse signal into corresponding angular displacement or linear displacement. It is widely used in electronics manufacturing, sewing machine, semiconductor equipment, laser cutting, textile machinery and so on.

    Physical Specification

    • Model Number: ATO-FY42EL200BC1
    • Matched the Driver Model: ATO-FYDB504T
    • Flanged Size: 42 x 42mm (Nema 17)
    • Motor Length: 68mm
    • Shaft Diameter: 5mm
    • Number of Leads: 4 wire
    • Weight: 0.36kg

    Electrical Specification

    • Motor Type: Bipolar Closed Loop Stepper
    • Step Angle: 1.8°
    • Rated Current: 2A
    • Holding Torque: 0.5N·m (50 N·cm, 72
    • Phase Resistance: 1.35Ω
    • Phase Inductance: 2.8mH
    • Rotor Inertia: 77g·cm2

    Dimensions (Unit: mm)


    Dimensions of Nema 17 2 Phase Closed Loop Stepper Motor

    Wiring Diagram

    Wiring Diagram of Nema 17 2 Phase Closed Loop Stepper Motor

    Speed-Torque Curve Diagram

    Speed Torque Curve Diagram of Nema 17 2 Phase Closed Loop Stepper Motor


    Nema 17 Closed Loop Stepper Motor 0.4N·m-0.75N·m Details

    Tips: Reasons for stepper motor out of step

    • The speed is set too high and the torque is not enough.
    • The voltage is unstable during high-speed operation, so that the input current sometimes does not reach the rated current. It causes the output torque to drop, and finally leads to out of step.
    • The speed rises or falls too fast, causing the loss of step.
    • Excessive external resistance.


    360 Days warranty

    Thank you for buying industrial automation products on, all products sold by ATO and the partner cover a 360-days-warranty, effective from the date of receiving the products.

    What is covered?

    ATO is responsible for providing free spare parts, free technical support to assist the customer to repair the defective products until the problem is solved.

    What is not covered?

    • Product purchased from anyone other than ATO store or a ATO authorized reseller.
    • Expendable parts.
    • Routine cleaning or normal cosmetic and mechanical wear.
    • Damage from misuse, abuse or neglect.
    • Damage from use of parts other than ATO approved.
    • Damage from use outside the product’s usage or storage parameters.
    • Damage from use of parts not sold by ATO.
    • Damage from modification or incorporation into other products.
    • Damage from repair or replacement of warranted parts by a service provider other than a ATO authorized service provider.
    • Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
    Existing reviews of Nema 17 Closed Loop Stepper Motor, 2 Phase, 2A, 0.5N·m
    For the price, it is great.
    I ordered this closed loop Nema 17 stepper motor, great quality packaging, good motor. I am pleased with it. So much better than the others. For the price, it is great.
    From: Vernon | Date: 26/07/2022
    Was this review helpful? Yes No (0/0)
    Great quiet light stepper motor for my extruder.
    This closed loop Nema 17 stepper motor arrived on time in good shape. I used it to replace my old one. I did a step calibration and was back in business. This stepper motor worked great and I will buy more if I need.
    From: Mubarak | Date: 25/07/2022
    Was this review helpful? Yes No (0/0)
    Works great on my applications.
    Very well packaged, everything as expected. I’m using this NEMA 17 closed loop stepper motor to open and close my blinds. So far, it seems to be working as anticipated. I will most definitely buy more.
    From: Janette | Date: 28/06/2022
    Was this review helpful? Yes No (0/0)
    Excellent motor for 3D printers.
    I used this Nema 17 closed loop stepper motor for replacing old stepper of 3D printer. This is a stepper motor and it only costs a little bit. Great value for its quality and performance. Works great and very quiet. I will buy from ATO again.
    From: Annette | Date: 13/04/2022
    Was this review helpful? Yes No (0/0)
    So little money for such a good motor.
    This is a high quality Nema 17 hybrid stepper motor, smooth with lots of torque. Works and fit perfectly. Very happy with this.
    From: Janette | Date: 14/03/2022
    Was this review helpful? Yes No (0/0)
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