The most headache-inducing mechanical problem of an axial-flux motor lies between the stator and the rotor. The two are separated only by an air gap of one millimetre or even thinner, and between the magnets and the iron core on both sides is an axial attraction of several tonnes. It is like two strong magnets suspended facing each other: with the slightest deviation, the attraction on the closer side rises sharply.
If the air gap is uneven by even tens of microns, the force on one side rises exponentially — at best the rotor disc bends and deforms, at worst it "sticks" and the rotor hits the stator. Attraction of this magnitude simply cannot be detected by eye or hand, and by the time abnormal noise is heard it is often too late. So the bearings and housing here are not supporting players but life-saving structures. For the bearings, ordinary deep-groove ball bearings cannot take this kind of axial thrust; usually angular-contact ball bearings that can carry high axial loads are used instead, or double-row tapered roller bearings, using greater load capacity to hold that pull.
The housing must be even tougher. In operation, that axial attraction becomes a continuous bending moment acting on the housing; ordinary stamped parts simply cannot withstand it, so high-strength aviation-grade aluminium alloy or topology-optimized cast structures must be used to keep deformation within an acceptable range. It can be said that more than half the effort in the mechanical design of an axial-flux motor goes into fighting this attraction, and the choice of bearings and housing directly determines how much power and how high a speed the motor can withstand.
Money spent on this layer of structure cannot be saved. When joining such motors, Jiuju lists the symmetry of the air gap as a mandatory inspection item — uneven clearance on the two sides is not a question of whether it will turn, but of whose account it lands on when it seizes. What the assembly tooling must do is ensure both sides' air gaps land evenly from the moment of joining, before stability can even be discussed.
又是一年月圆时至，秋风送桂香，阖家庆团圆。在浓浓的中秋氛围中，久巨始终坚守智造初心，企业每一份成长与收获，都离不开全体同事的勤恳付出与同心并肩。
时光缓缓流淌，岁月镌刻成长。为感谢全体伙伴一路并肩同行，传递公司人文关怀，久巨 7‑9 月员工集体生日会温情如约而至。
金秋送爽，月满中秋。为增进会员企业交流，凝聚行业发展合力，深圳市音响行业协会中秋会员联谊会于 9 月 18 日在会员单位深圳盛佳丽电子圆满举办。
The shipping area outside the workshop was a hive of activity. After multiple rounds of full-machine commissioning, simulated mass-production validation, and factory quality inspection, a Jiuju DC motor automatic assembly line completed all factory-out procedures, was loaded onto trucks on schedule, and is about to depart for the customer's production base, helping the customer's project advance production implementation on plan.
Jiuju Automation provides high-precision automatic assembly lines for axial flux motors, covering processes such as stator winding, magnet assembly, rotor balancing, and final product testing. These lines are suitable for applications in drones, new energy vehicles, and industrial drives. The company holds over 256 patents and is ISO 9001 certified...
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轴向磁通电机体积小、功率密度高，但定转子合装受强磁吸力制约，气隙均匀度与磁钢定位决定批量一致性。量产拼的不是设计，是装配过程能否被固定住。
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