Nema 17 Stepper motor for 3D Printer, 12V 0.4A, 2 phase 6 wires


Nema 17 Stepper motor for 3D Printer, 12V 0.4A, 2 phase 6 wires

12V 0.4A, 2 phase 6 wires Nema 17 stepper motor, with 1.8 deg. step angle (200 steps/revolution), is perfect for small robotics and automation projects. Cheap price and direct sale by manufacturer.

Electrical Specification Model ATO47-0406A
Step Angle 1.8°
Holding Torque 3.17kg-cm(44oz-in)
Voltage 12V
Rated Current/phase 0.4A
Phase Resistance 30Ω
Inductance 38mH
Rotor Inertia 68g-cm2
Physical Specification Frame Size 42 x 42mm
Length 47mm
Shaft Diameter Φ5mm
Shaft Length 22mm
Motor Leads 6
Weight 0.35kg
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=47mm

Nema 17 Stepper Motor Wiring Diagram

Nema 17 stepper motors wiring diagram

Tips: Why stepper motor cannot start at higher velocity and accompanying whistler?
The stepper motor can run normally at low velocity, and cannot start at certain higher velocity and accompanying whistler.
There is a technical parameter for the stepper motor: no-load start frequency. That is, the stepper motor can normally start pulse frequency under no-load. If the pulse frequency is higher than the value, the motor cannot normally start, the stalling or self-locking may occur. Under the circumstance of load, the start frequency shall be lower. The pulse frequency should have acceleration so that the motor rotates at high velocity. That is, the start frequency is low and then rises to the anticipated high frequency according to the acceleration (the motor runs at from low velocity to the higher one).
Except foregoing reasons, the reason for causing whistler may also be for big load. If the motor rotates at high velocity, the output torque of the motor will decreases. However, if the load requirement cannot be satisfied, stalling of motor will occur and whistler will be changed along with the change in frequency, to which the solution is to reduce the rotational velocity or replace for the motor with larger torque. Besides, after the motor rotates at high velocity and then stops, the transient whistler will be caused, which is resulted from chopping of phase current. It is only necessary to set the automatic semi-flow on the stepper driver board as effective.

Cloudray Stepper Motor Series has set the standard for quality, reliability, and durability in stepping motors. The precision of our Torque Power motors is matched only by the dependability of their performance. All Torque Power motors are bi-directional and totally enclosed with permanently lubricated ball bearings for long-lasting, smooth operation.


Cloudray stepper motor series are widely used in medical instruments, robotics, 3D printers, extruders, laser cutters, engraving machine, textile equipment, packaging machinery, CNC machines, etc. 


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