12 mm
Miniature cylindrical frame
The compact body supports high-speed motion where available installation space is tightly constrained.
SP12ZWWC29 12 mm Brushless Coreless DC Motor
Coreless DC Brushless Motor (General Industrial)
The SP12ZWWC29 is a 12 mm brushless coreless DC motor rated at 6 V, 4 mN·m and 12,000 rpm for compact precision drive systems.
Positioning accuracy
High torsional rigidity and constant torsional backlash over the entire gearbox service life ensure consistently high performance
Compactness
High torque density thanks to high performance and short design
Low maintenance
Highest quality standards for a long service life and extended maintenance intervals
Technical data
12 mm brushless coreless DC motor
Compact 12 mm coreless drive with 4 mN·m rated torque
The SP12ZWWC29 12 mm brushless coreless DC motor uses a slotless coreless structure to avoid slot-related air-gap flux pulsation. The design reduces pulsation and surface losses while supporting low electrical noise, high durability and fast dynamic response.
12,000 rpm
Fast rated operation
Low inertia and a coreless magnetic circuit support rapid acceleration for responsive servo mechanisms.
Brushless
Low electrical noise
The electronic commutation platform avoids brush wear and supports durable, smooth miniature motion.
Engineering data
Electrical and mechanical specifications
The 12ZWWC29 motor is rated for 6 V operation with 4 mN·m rated torque and 12,000 rpm rated speed.
12 mmMotor size
6 VRated voltage
4 mN·mRated torque
12,000 rpmRated speed
Performance data
12ZWWC29 specifications
| Parameter | Unit | 12ZWWC29 |
|---|---|---|
| Pole pairs | — | 2 |
| Phase resistance | Ω | 1 |
| Winding connection | — | Star |
| Insulation class | — | B |
| Duty cycle | — | S2 |
| Dielectric strength | — | 660 VAC / 1 kHz / 1 mA / 1 s |
| Insulation resistance | — | 100 MΩ / 500 VDC |
| Weight | g | 16.5 |
| Rated voltage | V | 6 |
| Rated power | W | 5 |
| Rated torque | mN·m | 4 |
| Rated speed | rpm | 12,000 |
| Rated current | A | 1.21 |
| No-load speed | rpm | 15,000 |
| No-load current | A | 0.16 |
| Motor efficiency | % | 70 |
| Noise, ambient 20 dB at 1 m | dB | <50 |
| Torque constant | mN·m/A | 3.29 |
| Back-EMF constant, peak | V/Krpm | 0.49 |
| Back-EMF constant, effective | V/Krpm | 0.34 |
| Peak torque | mN·m | 19.76 |
| Peak current | A | 6 |
| Rotor inertia | g·cm² | 0.3 |
| Mechanical time constant | ms | 2.76 |
| End cap | — | Aluminum alloy |
| Bearing | — | Deep-groove ball bearing |
| Magnet | — | Sintered NdFeB |
| Shaft | — | Carbon steel |
Technical drawings
Dimensions and performance characteristics
Compact motion
Coreless construction for rapid dynamic response
The slotless coreless structure avoids cogging-related magnetic reluctance variation and reduces pulsation losses. Its low inertia supports fast starts, stops and speed changes in high-speed follow-up systems.
- Brushless electronic commutation for durable operation
- Low electrical noise for sensitive miniature equipment
- High-speed response for compact servo mechanisms
Application areas
Miniature drives requiring fast action
Medical instruments
Compact high-speed mechanisms where low electrical noise and small size are important.
Precision instruments
Analytical and measurement assemblies requiring smooth miniature motion.
Miniature robotics
Fast-response actuators and auxiliary axes with strict weight and space constraints.
Follow-up systems
Responsive compact drives for systems requiring rapid commanded motion.
Integration data
Selection and installation information
Confirm the operating point, duty cycle, controller, thermal environment and mechanical interface before final motor selection.
Model12ZWWC29
Supply6 VDC
Rated operating point4 mN·m at 12,000 rpm
DutyS2
Winding connectionStar
Rotor inertia0.3 g·cm²
BearingDeep-groove ball bearing
MagnetSintered NdFeB
Discuss your miniature drive requirements
Share the required speed, torque, duty cycle, controller and installation constraints for configuration support.
Contact us
Would you like to learn more about our solutions?
We would be happy to advise you—personally, competently, and tailored to your requirements.
Perfection in a new dimension
Further Information
Short delivery times available for selected product configurations.
The TP+ HIGH TORQUE enables maximum torque density and maximum torsional rigidity—ideal for demanding applications with dynamic load changes and high positioning accuracy.
alpha Advanced Line gearboxes with increased durability and food-grade lubrication available.
The TP+ for coordinated pinion-rack systems for medium to high requirements. Typical areas of application in wood, plastic, and composite processing, in machining centers, or in automation.
With cynapse® and smart services, you can unleash the full potential of your drive system: sensor data is processed, visualized, and analyzed intelligently. Find out how the combination of gearboxes with cynapse® and our Smart Services can make your digital production faster, safer, and more efficient.
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