Nema 17 Bipolar Stepper motor, 2.8V 1.68A, 2 phase 4 wires

$65.85

This bipolar Nema 17 stepper motor is most popular, it with 1.8 deg. step angle (200 steps/revolution). Each phase draws 1.68A, allowing for a holding torque of 50 oz-in.

SKU: ATO-STEP-3917168

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Delivery date: 6-12 days

Overview

Nema 17 bipolar stepper motor, 2.8V 1.68A, 2 phase 4 wires, it with 1.8 deg. step angle (200 steps/revolution), brand new and direct sale by manufacturer.
Specifications

Electrical Specification	Model	ATO39-1684A
	Step Angle	1.8°
	Holding Torque	3.6kg-cm(50oz.in)
	Voltage	2.8V
	Rated Current/phase	1.68A
	Phase Resistance	1.65Ω
	Inductance	4mH
	Rotor Inertia	54g-cm2
Physical Specification	Frame Size	42 x 42mm
	Length	39mm
	Shaft Diameter	Φ5mm
	Shaft Length	22mm
	Motor Leads	4
	Weight	0.28kg
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
Quality Assurance	Certificate	CE, ROHs, ISO/SGS9001

Nema 17 Stepper Motor Dimension (Unit=mm)

Nema 17 stepper motors dimension

L1=24mm, Lmax=39mm

Nema 17 Stepper Motor Wiring Diagram

Nema 17 stepper motors wiring diagram

Tips: Why the torque of the stepper motor is reduced along with the rise in rotational velocity?
When the stepper motor rotates, the inductance of each phase winding of motor will form a reverse electromotive force. The higher the frequency the larger the reverse electromotive force. Under its role, the the phase current of motor is reduced along with the increase in frequency rate (or velocity), thus the torque decreases.

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