NEMA 11-28HS32-0674-0.6-Kg-cm Round Type Shaft Stepper Motor
NEMA 11-28HS32-0674-0.6-Kg-cm Round Type Shaft Stepper Motor
NEMA 11-28HS32-0674-0.6-Kg-cm Round Type Shaft Stepper Motor
The NEMA 11-28HS32-0674 is a compact round shaft stepper motor engineered for precision motion control applications requiring low to medium torque output of 0.6 kg-cm. This hybrid stepper motor is widely used by automation engineers, robotics developers, and CNC machine builders who need reliable stepping accuracy with minimal power consumption. It solves the critical challenge of achieving precise angular positioning in space-constrained environments where traditional DC motors or servo systems are impractical or cost-prohibitive.
Product Overview
The NEMA 11 stepper motor operates on the principle of electromagnetic coil energization sequencing to produce discrete angular steps, typically 1.8 degrees per full step in bipolar configuration. The 28HS32 designation indicates a motor length of 28mm with a 32mm body diameter, making it ideal for compact assemblies. The hybrid design combines permanent magnet and electromagnet technology to deliver consistent torque across the entire step range, ensuring smooth operation without resonance issues that plague purely permanent magnet designs. The 0.6 kg-cm holding torque specification represents the maximum resistive force the motor can maintain when energized, critical for applications requiring load holding without external braking mechanisms.
This round shaft variant features a standard 5mm diameter shaft, making it compatible with common couplings, pulleys, and direct drive mechanisms used across industrial automation. The motor's compact footprint and lightweight construction make it particularly suitable for 3D printers, laser engraving machines, automated dispensing systems, and laboratory instrumentation. The NEMA 11 frame size operates efficiently at step rates between 100 to 3000 RPM depending on load conditions and driver circuit design, providing flexibility for both high-speed positioning and controlled slow-speed applications.
Key Specifications
| Specification | Details |
| Product Type | NEMA 11 Hybrid Stepper Motor - Round Shaft |
| Motor Designation | 28HS32-0674 |
| Holding Torque | 0.6 kg-cm (5.88 mN-m) |
| Shaft Type | Round, 5mm diameter |
| Frame Size | NEMA 11 (28mm length, 32mm body diameter) |
| Step Angle | 1.8 degrees per full step (200 steps per revolution) |
| Winding Configuration | Bipolar 4-wire |
| Rated Voltage | 12V DC (typical operating range 12-24V) |
| Phase Resistance | 13 ohms per coil |
| Maximum Current | 0.4A per phase at rated voltage |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
Key Features
- Precision 1.8-degree step angle delivers 200 steps per full revolution for accurate positioning in micro-adjustment applications without external feedback sensors
- Low holding torque of 0.6 kg-cm makes this motor ideal for horizontal-axis applications and reduces power consumption in battery-operated portable devices
- Compact NEMA 11 frame with 28mm length minimizes installation space while maintaining standard mounting compatibility with industry-standard brackets and couplings
- Bipolar 4-wire configuration enables simple H-bridge driver integration with common microcontroller platforms like Arduino, Raspberry Pi, and PLC systems
- Hybrid stepper design eliminates cogging torque and provides smooth motion across the entire speed range without the resonance peaks characteristic of permanent magnet steppers
- Standard 5mm round shaft accepts universal couplings, pulleys, and direct mechanical drive mechanisms without requiring custom adapters
Applications and Use Cases
- 3D Printer Extruder Drive: Controls filament feed rate with precise 0.2mm extrusion increments on FDM printers, where the low torque requirement matches the minimal resistance of gear-driven extruder mechanisms
- Laser Engraving Machine Axis: Provides XY-axis positioning control in desktop laser cutters, enabling sub-millimeter accuracy for detailed artwork and text engraving on wood and acrylic materials
- Automated Laboratory Dispensing: Drives syringe pumps and liquid handling systems in pharmaceutical research where repeatable microliter-level dosing requires step-accurate motion without backlash compensation
- CNC Router Spindle Feed Control: Manages Z-axis depth control in small-format CNC machines for PCB drilling, engraving, and light milling operations where load holding prevents bit drift during idle periods
- Automated Camera Pan-Tilt Systems: Controls horizontal and vertical camera positioning in surveillance and time-lapse photography setups, where the compact motor size allows mounting on lightweight pan-tilt heads
- Document Scanner Stepper: Drives paper feed mechanisms in portable document scanners, where precise step control ensures consistent image capture without paper jams or skipped pages
How to Use
Begin by identifying the four motor leads: typically colored red (positive), black (negative), green, and blue (coil phases). Connect these to a stepper driver module such as the A4988, DRV8825, or ULN2003, which handles the complex coil energization sequencing. The driver requires three control signals from your microcontroller: STEP (pulse input), DIRECTION (high/low logic), and ENABLE (activation control). Supply 12-24V DC power to the driver module, ensuring adequate current capacity of at least 1A per phase to achieve full torque output. Set the microstepping resolution on the driver to 1/16 or 1/32 steps if smooth motion is required, though this reduces maximum speed proportionally.
For mechanical installation, secure the motor using the standard NEMA 11 mounting flange with M3 threaded holes positioned at 20mm spacing. Couple the 5mm shaft to your driven mechanism using a flexible coupling to accommodate minor misalignment and reduce vibration transmission. Start with low step rates (500 RPM equivalent) during commissioning to verify correct rotation direction and load response. If the motor stalls or produces excessive heat above 60 degrees Celsius, reduce step rate or increase supply voltage incrementally. Implement acceleration ramping in your firmware to avoid missed steps during rapid direction changes, starting at 500 steps/second and accelerating at 100 steps/second squared for optimal performance.
Frequently Asked Questions
What is the difference between NEMA 11 and NEMA 17 stepper motors?
NEMA 11 motors have a 28mm body length and 32mm diameter, producing 0.3-0.6 kg-cm torque, while NEMA 17 motors measure 40mm length and 42mm diameter, delivering 3-4 kg-cm torque. Choose NEMA 11 for space-constrained applications like 3D printer extruders, and NEMA 17 for XY-axis movement requiring higher load handling. The NEMA 11 consumes significantly less power, making it suitable for battery-powered devices.
Can I use this motor with Arduino or Raspberry Pi directly without a driver module?
No, you must use a dedicated stepper driver module. The Arduino/Raspberry Pi GPIO pins output maximum 5mA at 5V, while this motor requires 0.4A per phase at 12-24V. A driver module like A4988 or DRV8825 acts as a current amplifier, converting low-power logic signals into high-current motor drive signals. Direct connection will damage the microcontroller pins and prevent motor operation.
What holding torque means and why is 0.6 kg-cm important for my application?
Holding torque is the maximum external force the motor can resist when powered but stationary. The 0.6 kg-cm specification means this motor can maintain position against a 0.6 kilogram weight hanging from a 1cm radius arm. For vertical axis applications like Z-axis on CNC machines, verify your load weight times distance from shaft center does not exceed 0.6 kg-cm, or the motor will slip. For horizontal applications, holding torque becomes irrelevant since gravity does not create opposing force.
How do I determine the correct microstepping setting for smooth motion?
The motor naturally produces 1.8-degree steps (200 per revolution), which may cause visible vibration at low speeds. Enable 1/4 microstepping in your driver to achieve 0.45-degree steps (800 per revolution), providing visually smooth motion. Use 1/16 microstepping (3200 steps/revolution) for applications requiring ultra-smooth operation like camera movement, though maximum speed reduces proportionally. Higher microstepping increases positional accuracy but reduces holding torque and maximum speed capability.
What happens if I exceed the rated current of 0.4A per phase?
Exceeding 0.4A causes rapid temperature rise in the motor windings, potentially reaching 80-100 degrees Celsius within minutes. Sustained overcurrent degrades the insulation coating on coil wires, eventually causing phase-to-phase shorts that permanently damage the motor. Most stepper drivers include current limiting potentiometers to prevent this issue. Set current to match your load requirements, typically 60-80% of rated maximum for reliable operation with thermal headroom.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
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