Mini 10mm 2-Phase Stepper Gear Motor | Planetary Metal Gear
Mini 10mm 2-Phase Stepper Gear Motor | Planetary Metal Gear
Ultra-Compact 10mm Planetary Stepper Gear Motor for Precision Applications
Engineered for demanding precision work, this miniature 2-phase, 4-wire stepper gear motor packs remarkable accuracy into a 10mm outer diameter package. With a full metal planetary gear train and a flipped output shaft design, it delivers ultra-fine positional control — ideal for optical instruments, robotic systems, camera focus mechanisms, lab automation, and any project where repeatable micro-movement is critical.
Key Features
- Ultra-Compact Design: 10mm outer diameter, weighing approximately 10 grams — fits where other motors simply cannot.
- Exceptional Precision: 0.018° output shaft stepping angle — just 20,000 pulses completes a full 360° revolution for smooth, highly accurate motion.
- High Gear Reduction: 1:1000 planetary gear ratio delivers high torque output in a tiny footprint.
- Full Metal Planetary Gears: All-metal gear construction ensures durability, low backlash, and long service life under continuous operation.
- Flipped Output Shaft: 3mm diameter output shaft (2.7mm with D-flat), 6mm in length — convenient for space-constrained assemblies.
- Rated at 12V DC: ~10Ω phase resistance, ~2.0mH inductance per phase, ~0.4A short-circuit current at 5V.
- Reliable Electrical Performance: Max pull-out frequency 1200 pps @ 5.0V; max pull-in frequency 1000 pps @ 5.0V; insulation impedance 100MΩ/500VDC.
- 18° Motor Step Angle: Standard 2-phase stepping for compatibility with most stepper driver boards (driver required — sold separately).
- Short Lead Wires: ~45mm wire length for easy integration into compact enclosures.
Technical Specifications
| Parameter | Value |
|---|---|
| Motor Outer Diameter | 10 mm |
| Motor Type | 2-Phase, 4-Wire Stepper (driver required) |
| Gearing Arrangement | Planetary (Full Metal) |
| Rated Voltage | 12V DC |
| Motor Step Angle | 18° |
| Gear Reduction Ratio | 1:1000 |
| Output Shaft Step Angle | 0.018° (20,000 pulses = 360°) |
| Output Shaft Diameter | 3mm (2.7mm with D-flat) |
| Output Shaft Length | 6mm |
| Motor Weight | ~10 g |
| Phase Resistance | ~10 Ω |
| Inductance (Phase A & B) | 2.0 mH each |
| Short-Circuit Current @ 5V | ~0.4 A |
| Max Pull-Out Frequency | 1200 pps @ 5.0V |
| Max Pull-In Frequency | 1000 pps @ 5.0V |
| Insulation Impedance | 100 MΩ / 500VDC |
| Wire Length | ~45 mm |
| Country of Origin | Made in China |
Ideal Applications
- Optical instruments & microscope focus adjusters
- Camera lens and aperture control mechanisms
- Miniature robotics and automation arms
- Laboratory positioning stages
- 3D printer extruder or axis drives
- Wearable tech and compact electronic devices
What's in the Box?
- 1× Mini 10mm 2-Phase 4-Wire Stepper Gear Motor
Note: A compatible stepper motor driver board is required and is not included.
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Frequently Asked Questions
Q: Does this mini stepper gear motor include a driver board?
A: No, a stepper motor driver board is not included. This 2-phase 4-wire stepper gear motor requires a compatible external driver to operate. Please ensure you pair it with an appropriate driver for your voltage and current requirements.
Q: What is the output shaft stepping angle and how precise is this motor?
A: Thanks to its 1:1000 planetary gear reduction, the output shaft stepping angle is just 0.018°. It takes approximately 20,000 pulses to complete one full 360° revolution, making this motor exceptionally precise — perfect for optical instruments, lab equipment, and fine-motion control applications.
Q: What rated voltage does this 10mm stepper gear motor use?
A: This mini stepper motor is rated at 12V DC. However, it can also be tested at 5V DC, at which point the short-circuit current is approximately 0.4A and the maximum pull-out frequency is 1200 pps.
Q: Is this motor suitable for optical and precision instrument use?
A: Yes. With its full metal planetary gears, ultra-low output step angle (0.018°), and compact 10mm diameter, this stepper gear motor is specifically well-suited to optical instruments, microscopes, camera systems, and other precision positioning applications where smooth, repeatable micro-movement is essential.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.