Jiuju Motor Automatic Assembly Line: From Drum to Disc — Why Axial Flux Motors Can Disrupt the Motor Industry?

To understand an axial flux motor, you first need to clarify its two core components: the stator, which is stationary and wound with coils, and the rotor, which carries magnets and rotates to output power. The direction of the magnetic field directly determines the motor's form and performance.

Axial Flux Comparison
Axial Flux Comparison

The magnetic field of a conventional radial-flux motor radiates outward from the centre, giving an overall cylindrical drum shape. In an axial-flux motor the field travels along the shaft direction, with rotor and stator stacked layer upon layer like a sandwich. Thanks to a leverage effect similar to a long wrench, the magnetic force acts farther from the axis, giving it far higher power density than a conventional motor. At the same power, an axial-flux motor can be half the volume and weight and save half the metal, making it especially advantageous in lightweight-demanding scenarios and suitable for new-energy commercial vehicles, two-wheelers, construction machinery, electric ships, humanoid robots, low-altitude aircraft and many other fields.

Three Major Bottlenecks in Axial Flux Motor Mass Production
Three Major Bottlenecks in Axial Flux Motor Mass Production

This theory, born long ago, has been slow to reach large-scale deployment, with bottlenecks concentrated in materials, structure and process. High-temperature demagnetization of magnets, a strict air gap of only 0.3 mm, and the lack of suitable mass-production equipment all hold it back from leaving the laboratory. To maintain a micron-level air gap, the assembly stage must fight enormous axial magnetic attraction, and the slightest deviation causes vibration, disc rubbing or even seizure, imposing extremely high requirements on magnet layout and stator-rotor joining precision. Jiuju also continues to take part in process research in this field, carrying out equipment technology development around key operations such as magnet assembly, magnetizing and air-gap inspection, helping the industry overcome the manufacturing difficulties of mass-producing axial-flux motors.

久巨 未来动力场景重塑 - JUJU reshaping future power scenarios
Reshaping Future Power Scenarios

Today China has already built large-scale axial-flux motor production lines, from self-developed magnets to fully automated production, gradually achieving self-reliance and control over key links. After two hundred years, this long-shelved technology has finally reached the tipping point of industrialization. Lighter, smaller and stronger axial-flux motors are reshaping numerous power scenarios. In the future, from new-energy heavy trucks to humanoid robots, more and more disc-type motors will enter reality and change the underlying logic of the power industry.

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