When sourcing mini motors, you must prioritize Voltage (V), Speed (RPM), and Torque (N·m). For precision applications like robotics or medical devices, Coreless DC motors are preferred for their low inertia and high efficiency. If your application requires high torque at low speeds, ensure the supplier provides a compatible Gearbox (Planetary or Spur). Always verify the Insulation Class (typically Class B or F) to ensure the motor can withstand the thermal demands of your specific operating environment.