Nema 17 Micro Stepper Motor, 12V/ 24V, 7.5 Degree

5 out of 5 based on 1 reviews | Write a review

$62.15

Buy Nema 17 micro stepper motor with ideal price. Working voltage 12V/24V for selection, corresponding current 0.4A/0.6A, resistance 10Ω/30Ω, high torque 80 mN-m, stepping angle 7.5 degree. 2-phase miniature stepper motor with metal gear, bipolar drive.

Rated Voltage *

SKU: ATO-MGSTEP-171224

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Delivery date: 6-12 days

Overview
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Competitive price Nema 17 micro stepper motor for sale. Motor diameter 42mm, optional rated voltage 12V/24V, current 0.4/0.6Amp, resistance 10Ω/30Ω, stepping angle 7.5°. 2 phase miniature stepper motor has bipolar drive, which can be used in medical equipment, printer, scanner, automotive meter, CNC equipment, security systems, flash lamp, etc.

Specification Datasheet

Model	ATO-SM4201	ATO-SM4203
Rated Voltage	24V	12V
Rated Current	0.6A	0.4A
Resistance	30Ω	10Ω
Phase	2 Phase	2 Phase
Stepping Angle	7.5°	7.5°
Excitation Method	2	2
Pull-in Torque	31.0 mN-m (200 pps)	35 mN-m (300 pps)
Pull-out Torque	23.0 mN-m (600 pps)	40 mN-m (300 pps)
Holding Torque	80.0 mN-m (0 pps)	80.0 mN-m (0 pps)
Max. Continuous Response Frequency	640 pps	400 pps
Max. Starting Frequency	700 pps	400 pps
Insulation Grade	E	B
Drive Mode	Bipolar Drive
Ambient Temperature	0℃~55℃
Insulation Resistance	500VDC 100MΩ min

Phase Sequence Excitation & Dimensions Diagram (Unit: mm)

24V 0.6A Micro Stepper Motor (ATO-SM4201)

Connector PIN Location
PIN No.	Color	CCW←→CW (Seen from flange side)				Phase
1	Red	ON	ON	-	-	B
2	Yellow	-	-	ON	ON	B
3	Orange	-	ON	ON	-	A
4	Blue	ON	-	-	ON	A

Dimensions of Nema 17 Micro Geared Stepper Motor, 24V, 7.5 Degree

12V 0.4A Micro Stepper Motor (ATO-SM4203)

Connector PIN Location
PIN No.	Color	CCW←→CW (Seen from flange side)						Phase
1	Yellow	ON	-	-	ON	ON	-	A
2	Blue	-	ON	ON	-	-	ON	A
3	Red	-	-	ON	ON	-	-	B
4	Orange	ON	ON	-	-	ON	ON	B

Dimensions of Nema 17 Micro Geared Stepper Motor, 12, 7.5 Degree

Details

Nema 17 Micro Stepper Motor Details

Tips: Current operation principle of Nema 17 micro stepper motor.

The torque of Nema 17 micro stepper motor is proportional to the product of the current and voltage passed in a certain period of time, and the maximum value is obtained when starting (when not rotating). According to this principle, the voltage is usually fixed, only proportional to the amount of current).
If you want to increase the current, you can thicken the coil to reduce the resistance, or reduce the number of coils (the total length of coil) or increase the load.
If the coil wire is thickened, do not increase the number of coils. Conversely, if the coil wire is made thinner without increasing the number of coils, only increasing the speed will reduce the torque and make the Nema 17 micro stepper motor unusable.
Generally speaking, the smaller the number of coils of Nema 17 micro stepper motor, the lower the resistance of rotor, resulting in larger current and higher speed.
For the same rotor, if the magnetic force of the magnet becomes stronger, and the speed and torque will increase.

VFD Two-Wire Control Wiring with Push Button for Forward Motor

In this video we've guided you through how to do VFD control wiring with a self-lock push button switch to run the motor in forward direction. We've covered everything from wiring to programming and even a test run. So just watch it through and hope you'll find it informative and helpful.

Existing reviews of Nema 17 Micro Stepper Motor, 12V/ 24V, 7.5 Degree

Durable and well-made

I’ve been using the Nema 17 micro stepper motor for a few weeks now, and I’m really impressed with its performance. The motor runs very smoothly and offers precise step control, which is perfect for my 3D printing setup. The torque is strong for its compact size, and it maintains consistent power even under load. I also appreciate the solid metal gear construction—it feels durable and well-made. With a current of 0.6A, it’s quite energy-efficient too.

From: Eleanor | Date: 27/10/2025

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