An Outrunner Brushless DC Motor (BLDC) is designed with its permanent magnets mounted on the outer rotating shell and the stator windings fixed at the inner core.
In this design, the rotor housing directly carries the magnets and delivers torque, which delivers significantly higher torque density and improves heat dissipation.
This structural innovation enables outrunner BLDC motors to achieve:
Substantially higher continuous torque output
Superior thermal performance with low thermal resistance
High power density and compact axial length
Smooth low-speed operation and suitability for direct-drive applications
These advantages make them the ideal choice for applications demanding high torque density, robust thermal management, and reliable performance in compact systems, such as in robotics, drones, and precision automation.
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