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This 28 mm stepper motor delivers precise motion control with a 1.8° step angle and up to 256 microsteps. Engineered with premium magnetic materials and high-precision machining, it ensures smooth, low-noise operation and ±0.05° positioning accuracy. Ideal for medical devices, optical instruments, and precision automation, it provides over 98% repeatable positioning, guaranteeing reliable, high-performance operation in demanding applications.
| Quantity: | |
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1.8°28mm | |
1.8°28mm（NEMA11）2phase hybrid stepper motor | |
General specifications | |
Item | Specifications |
Step Angle | 1.8° |
Temperature Rise | 80℃max |
Ambient Temperature | -20℃ ~ +50℃ |
Insulation Resistance | 100MΩ Min., 500VDC |
Dielectric Strength | 500VAC for 1minute |
Shaft Radial Play | 0.02Max. (450g-load) |
Shaft Axial Play | 0.08Max. (450g-load) |
Max. radial force | 28N (20mm from the flange) |
Max. axial force | 10N |
Model No. | Step Angle (°) | Motor Length (mm) | Current / Phase (A) | Resistance / Phase (Ω) | Inductance / Phase (mH) | Holding Torque (g·cm) | # of Leads | Rotor Inertia (g·cm²) | Weight (Kg) |
SLT28HS32 - 0956 | 1.8 | 32 | 0.95 | 2.8 | 0.8 | 430 | 6 | 9 | 0.11 |
SLT28HS32 - 0674 | 1.8 | 32 | 0.67 | 5.6 | 3.4 | 600 | 4 | 9 | 0.11 |
SLT28HS45 - 0956 | 1.8 | 45 | 0.95 | 3.4 | 1.2 | 750 | 6 | 12 | 0.14 |
SLT28HS45 - 0674 | 1.8 | 45 | 0.67 | 6.8 | 4.9 | 950 | 4 | 12 | 0.14 |
SLT28HS51 - 0956 | 1.8 | 51 | 0.95 | 4.6 | 1.8 | 900 | 6 | 18 | 0.2 |
SLT28HS51 - 0674 | 1.8 | 51 | 0.67 | 9.2 | 7.2 | 1200 | 4 | 18 | 0.2 |
The 28mm NEMA11 DC Stepper Motor is a high-precision, ultra-compact 2-phase hybrid stepper motor designed for medical device manufacturers, 3D printing equipment suppliers, and micro automation system integrators requiring precise motion control in extremely space-constrained applications. With a miniature 28×28 mm NEMA11 standard flange and a compact body length of 31–51 mm, this motor delivers exceptional power density in a tiny footprint. It features a 1.8° step angle, holding torque ranging from 430 g·cm to 1200 g·cm, and simple pulse-driven operation that eliminates the need for complex closed-loop feedback systems. Combining industry-leading positioning accuracy, low noise operation, and flexible customization, it is the ideal drive solution for micro-scale precision industrial applications.
The 28×28mm micro stepper motor adheres to NEMA11 standard mounting dimensions, with an ultra-miniature form factor that fits seamlessly into embedded systems and micro equipment where installation space is extremely limited. Its optimized magnetic circuit design delivers over 20% higher power density than standard peer models, solving drive challenges in space-restricted environments.
Engineered for ultra-precise motion control, this NEMA11 high precision stepper motor features a 1.8° step angle with up to 256 microstepping capability, achieving ±0.05° positioning accuracy and over 98% repeatable positioning. High-precision machining and premium magnetic materials minimize vibration and noise during operation, ensuring stable, consistent performance in high-demand precision applications.
This stepper motor operates via simple pulse and direction signals, eliminating the need for complex closed-loop feedback systems in most applications. This drastically reduces system hardware costs, simplifies integration, and shortens product development cycles for equipment manufacturers, with no need for complex tuning or calibration.
Built for continuous industrial operation, the 2-phase hybrid NEMA11 stepper motor supports an ambient temperature range of -20℃ ~ +50℃, with a minimum insulation resistance of 100MΩ (500VDC) and 500VAC dielectric strength for 1 minute. It undergoes strict testing for shaft radial and axial play, with rated maximum radial force of 28N and axial force of 10N, ensuring long-term reliability in harsh industrial environments.
With fully customizable winding parameters, mechanical dimensions, and compatible accessories, this motor adapts to a wide range of specialized micro automation applications. It can be seamlessly integrated with gearboxes, encoders, and controllers, delivering a fully tailored motion solution for unique system requirements.
The 28mm NEMA11 micro stepper motor is the preferred choice for 3D printers, medical devices, optical instruments, micro automation systems, embedded systems, micro robotics, precision testing equipment, security monitoring devices, and other micro-scale precision applications requiring accurate motion control.
We offer full customization for the custom NEMA11 stepper motor, including tailored shaft machining, winding parameter adjustments to match torque and current requirements, custom lead wire configurations, and integrated accessories including gearboxes, encoders, and drive controllers. We also support custom mechanical dimensions and environmental performance tuning to meet your unique application needs.
Mount the motor via the NEMA11 standard flange, using matching mounting screws to ensure secure fixation, and avoid applying radial or axial force exceeding the rated limits to the motor shaft.
Follow the wiring diagram for your 4-wire or 6-wire model, connecting the phase leads to a compatible stepper motor driver, with pulse and direction signals linked to your industrial controller.
Ensure the drive frequency settings match the motor’s rated specifications to avoid abnormal noise or step loss, and implement reliable grounding to reduce electrical interference.
Install the motor in a dry, well-ventilated environment, and avoid exposure to excessive dust, moisture, or corrosive gases to extend service life.
The standard MOQ is 3 units, with a sample lead time of approximately 15 working days. Flexible arrangements are available for urgent requests.
Yes, we offer full custom machining for sample production, and support integration with encoders, gearboxes, and controllers to meet your unique system requirements.
First, confirm that the drive frequency settings match the motor’s nameplate data, then inspect the bearing condition and replace it if degraded. Our technical team is available for professional support at any time.
Optimize the switching frequency parameters of the driver, adjust the motor power according to actual operating conditions, and ensure proper heat dissipation. We can provide tailored solutions for your specific application.
Yes, all our 28mm NEMA11 stepper motors undergo strict quality testing before delivery, with full compliance with global industrial safety and environmental standards.
Whether you are a medical device manufacturer, micro automation system integrator, or precision equipment OEM, our team can provide a fully customized 28mm NEMA11 DC Stepper Motor solution tailored to your exact motion control requirements. Contact us today to request samples, get a detailed quote, and collaborate with our engineering team on your specialized micro stepper motor needs.
