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    Nema 34 Closed Loop Stepper Motor, 2 Phase, 6.2A, 8.2N·m

    5 out of 5 based on 3 reviews | Write a review
    Nema 34 hybrid stepper motor with encoder at low cost, 6.2 amps, 134mm length, 1.8 degree step angle, high holding torque of 8.2 N·m for CNC machine, 3D printer and robot arm. 2 phase bipolar stepper motor featured with closed position loop provides feedback and control, which will not lose or gain steps.
    SKU: ATO-STEP-34CL620
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    ATO Nema 34 closed loop stepper motor combines the advantages of servo motor and stepper motor technologies. It run more smoothly with less resistance than a standard stepper motor. This hybrid bipolar stepper motor with high holding torque of 8.2 N·m is suitable for the biggest projects, such as CNC application, robotic, 3D technology and so on.

    Physical Specification

    • Model Number: ATO-FY86EL620BC1
    • Matched the Driver Model: ATO-FYDB808T
    • Flanged Size: 86 x 86mm (Nema 34)
    • Motor Length: 134mm
    • Shaft Diameter: 14mm
    • Number of Leads: 4 wire
    • Weight: 3.6kg

    Electrical Specification

    • Motor Type: Bipolar Stepper
    • Step Angle: 1.8°
    • Rated Current: 6.2A
    • Holding Torque: 820 N·cm (8.2 N·m, 1161
    • Phase Resistance: 0.45Ω
    • Phase Inductance: 4.7mH
    • Rotor Inertia: 3600g·cm2

    Dimensions (Unit: mm)


    Dimensions of Nema 34 2 Phase Closed Loop Stepper Motor

    Motor & Encoder Wiring Diagram

    Wiring Diagram of 2 Phase Closed Loop Stepper Motor

    Speed-Torque Curve Diagram

    Speed Torque Curve Diagram of Nema 34 2 Phase Closed Loop Stepper Motor


    Nema 34 Closed  Loop Stepper Motor 4.5N·m-12N·m Details

    Tips: Difference between 2 phase stepper motor and 4 phase stepper motor

    There are two phase stepper motors, four phase stepper motor and five phase stepper motors in the market. But no matter what kind of stepper motor, their working principle is the same. When current flows through the stator winding, the stator winding generates a vector magnetic field. The magnetic field will drive the rotor to rotate in an angle, so that the pair of magnetic field directions of the rotor are consistent with the magnetic field directions of the stator. When the vector magnetic field of the stator rotates by an angle. The rotor also rotates an angle with the magnetic field. Each time an electric pulse is input, the motor rotates one angle to move forward.

    The angular displacement that it outputs is proportional to the number of input pulses, and the speed is proportional to the pulse frequency. Change the sequence of winding energization, and the motor will reverse. Therefore, the number of pulses, the frequency and the energization sequence of each phase winding of the motor can be used to control the rotation of the stepper motor.

    The differences between 2 phase stepper motor and 4 phase stepper motor are:

    • Different internal leads: there are 4 lead wires for 2 phase motors, and there can be 5 or 6 lead wires for 4 phase motors.
    • Different ways of working: 2 phase permanent magnet motors have windings on the stator and the rotor is composed of soft magnetic materials. The structure is simple, the cost is low, and the step angle is small, up to 1.2 degrees. The 4 phase high torque motor is a permanent magnet stepping motor, its rotor is made of permanent magnet material, and the number of poles of the rotor is the same as that of the stator. Its characteristics are good dynamic performance and large output torque.


    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 34 Closed Loop Stepper Motor, 2 Phase, 6.2A, 8.2N·m
    I’d give it 10 stars if I could!
    This is a well-made closed loop stepper motor. It fits the standard Nema 34 stepper dimensions. Come with an enough wire. I use this stepping motor for my CNC machine, works great. I’d give it 10 stars if I could!
    From: Janette | Date: 28/07/2022
    Was this review helpful? Yes No (0/0)
    I’ll be ordering more!
    I bought this Nema 34 closed loop stepper motor to replace my cheap one and I am sure glad I did. This stepping motor runs so quiet and cool especially with matched driver. I’ll be ordering more!
    From: Paris | Date: 29/06/2022
    Was this review helpful? Yes No (0/0)
    Nice and strong
    Great stepper motors, with excellent packaging. They have good torque and are working great with my CNC controller. I will be buying more of these.
    From: Richard | Date: 14/03/2022
    Was this review helpful? Yes No (0/0)
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