Round NEMA 14 Bipolar 0.9deg 0.091Nm (12.64oz.in) 0.42A 3.8V Φ36x21mm 4 Wires Stepper Motor

Technical Parameter

Item	Specifications
Step Angle Accuracy	±5%
Resistance Accuracy	±10%
Inductance Accuracy	±20%
Temperature Rise	80K Max.
Ambient Temperature	-20℃~+50℃
Insulation Resistance	100MΩMin.@ 500VDC
Dielectric strength	One minute@500VAC∙5mA Max.
Shaft Radial Play	0.06Max.@450g
Shaft Axial Play	0.08Max.@450g

 

Technical Specification

Model No.	Polar	Rated Voltage	Current/ Phase	Resistance/ Phase	Inductance/ Phase	Holding Torque		# of Leads	Rotor inertia	Weight	Length
		V	A	Ω	mH	oz-in	kgf · cm		g∙ cm2	kg	mm
36H021HM-0424	Bipolar	3.8	0.42	9	5	12.64	0.91	4	7	0.13	21

 

Pull Out Torque Curve

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAQ

Q: What is your shipping method?

A: We can deliver the products by air, express, and sea, and we could choose the most suitable transportation way for you according to your request.

 

Q: What are the applications of stepper motors?

A: They are commonly used in CNC machines, the 3D printing industry, automated test equipment, etc.

 

Q: What is the detent torque?

A: The detent torque of a stepper motor refers to the torque or resistance felt when the motor is in a stationary state, with no current applied to the windings. The detent torque is relatively low in stepper motors compared to the holding torque, which is the torque required to maintain the motor in a specific position when current is applied to the windings. The detent torque is present even when the motor is not energized and provides a small amount of holding torque.

 

Q: What is resonance in a stepper motor?

A: Resonance in a stepper motor refers to a condition where the motor's mechanical and electrical properties combine to create a natural frequency at which the motor becomes more susceptible to vibrations and oscillations. It occurs when the applied frequency of step pulses matches or is close to the motor's natural resonance frequency.

 

Q: What is the difference between open-loop and closed-loop control of stepper motors?

A: Open-loop control of stepper motors is simpler and more cost-effective but lacks direct feedback on the motor's position. Closed-loop control offers improved accuracy and the ability to correct errors and disturbances, but it is more complex and costly to implement. The choice between open-loop and closed-loop control depends on the specific requirements of the application, including the desired accuracy, speed, load variations, and cost constraints.

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