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Micro planetary gearbox - 16mm precision transmission expert
Core technical parameters
• Precision structure: The three-stage planetary gear set uses POM engineering plastic, axial movement ≤ 0.1mm, return ≤ 3° (customizable), and the transmission efficiency can reach up to 85%
• Power performance: The rolling bearing version supports 20N load, instantaneous allowable torque 6000gf.cm, and is compatible with input speeds ≤ 15000rpm
• Environmental adaptability: has passed the low-temperature cold start test at -20℃ and the high-temperature continuous operation test at 85℃, meeting the reliability standards of industrial


Differentiated advantage
Space utilization: Compact design with a length of only 11.5-21.4mm, reducing the volume of traditionalboxes by 40%
Silent technology: Spiral tooth profile modification process keeps the operating noise below 30dB, outperforming similar competitive products by more than dB
Customized service: Supports non-standard voltage (1.5-12VDC), special reduction ratio, and metal gearbox version



Product Detail Page FAQ
Product Specifications & Customization
1. What are the key parameters of SANI’s micro precision planetary gear box reduction motor?
It has a diameter range of 6mm-50mm, power of 0.01-40W, output speed of 5-2000rpm, reduction ratio of 5-1500, and output torque from 1gf.cm to 80Kgf.cm—covering most micro-transmission scenario needs.
2. What gear types and module ranges does SANI’s plastic gear product line include?
We’ve developed over 200 plastic gear molds with modules from 0.06 to 1.2. Gear types cover spur gears, helical gears, internal spur gears, internal helical gears, worm gears, bevel gears, and racks.
3. Does SANI offer customized gear or gearbox solutions?
Yes. We provide customized precision gears, worm gears, worm drive mechanism systems, and even non-standard gearboxes—tailored to your specific application scenarios and technical requirements.
4. Are there options for special material parts (e.g., metal powder injection parts)?
Absolutely. We supply precision small plastic parts, special metal powder injection parts, and integrated assembly components to meet diverse material needs for different industries.
Application & Compatibility
Can these products be used in automotive electrification systems?
Yes. Our products (such as auto parts for rearview mirrors, seat adjustment, EPB, and ABS) are widely applied in automotive electrification parts, and we’ve supplied auto components to BYD since 2020.
Are SANI’s micro-transmission products suitable for medical equipment?
Definitely. They are used in medical and health products like insulin injection pumps, automatic drip controllers, ventilators, and blood pressure meters—meeting strict precision and reliability standards for medical devices.
Can the gears/gearboxes work with smart home devices?
Yes. Our products power smart home equipment such as electric curtains, intelligent locks, toilet sanitary ware, and security monitoring systems—ensuring stable and quiet operation.
Are there compatible solutions for robots (e.g., mopping robots, logistics robots)?
We offer micro-transmission mechanisms tailored for robots, including mopping robots, logistics robots, and household robots, with torque and speed parameters optimized for robotic movement and function.






