Choosing the appropriate voltage and power for a micro DC motor is a key step in product design. It directly affects the motor's performance, lifespan, energy consumption, and how well it integrates with the overall system. Lihua Motor specializes in the development and manufacturing of micro DC motors with rated voltages between 1V and 36V, power outputs from 0.05W to 100W, and diameters ranging from 5.4mm to 45mm. Based on our experience, here are the key factors to help you make the right choice:
Start by identifying the functional needs of your application. For example:
Does it need high speed or high torque?
Is long life or low noise more important?
Will it run continuously or intermittently?
Different applications such as massage devices, robotic cleaners, or automotive components have varied performance needs, which determine the appropriate voltage and power range.
Make sure the motor’s rated voltage is compatible with your product’s power source. Lihua Motor offers a full range of low-voltage solutions between 1V and 36V. Common examples include:
3V, 5V, 6V, 12V for battery-powered portable devices
24V, 36V for industrial or motorized equipment requiring higher torque and efficiency
Selecting the right voltage avoids issues like overload, overheating, or insufficient performance.
Motor power is calculated as:
Power (W) = Torque (Nm) × Speed (rad/s)
You should evaluate the load your product needs to drive — for example, lifting weight, rotational force, or pump flow. Then determine the motor size and power based on that. Lihua Motor supports customization from 0.05W to 100W, allowing precise matching for different applications.
In limited spaces, especially for compact designs such as smart wearable devices or miniature pumps, higher power density and efficiency are critical. Choosing the right combination of voltage and power can reduce the motor’s heat generation and extend its life, while maintaining stable performance in compact sizes like 5.4mm, 8mm, 20mm, etc.
Higher voltage motors typically draw less current at the same power level, which helps reduce heat and makes them more compatible with electronic control systems. However, your product’s control circuit design and heat dissipation capabilities must also be considered to avoid overdesign or instability.
If you’re unsure, we recommend contacting our engineering team for professional support. Lihua Motor provides customized motor solutions, including prototype sampling and performance testing, to ensure the selected motor meets your product's needs and optimizes long-term performance and cost-efficiency.
Conclusion
Choosing the right micro DC motor voltage and power is more than just selecting numbers. It’s about understanding your product’s functional goals, usage environment, and system design. With over 20 years of experience and more than 20,000 custom solutions delivered, Lihua Motor is ready to help you find the ideal motor for your next innovation.
