China Neodymium And Ferrite Magnets Manufacturer & Supplier 
Have you noticed that in bonded neodymium iron boron magnets, most of the shapes are ring or hollow cylinders, unlike sintered neodymium magnets which have various shapes? Why is this? Below, Xiaofu will answer this question for you.
The reason why bonded neodymium iron boron is mostly made into a ring shape is mainly related to its molding process, application requirements, and performance characteristics.
Bonded neodymium iron boron magnets are typically produced using a compression molding process. Ring-shaped molds are easy to process and demold, and offer good dimensional stability in production.
Surface black coating bonded neodymium magnets
Take a look at its applications: bonded neodymium iron boron magnets are widely used in motor rotors, magnetic encoders, brushless DC motors, and more. Ring magnets provide a uniform magnetic field distribution, which helps reduce magnetic fluctuations during rotation, thereby improving efficiency and stability.
Although the magnetic energy product (BHmax) of bonded neodymium iron boron is lower than that of sintered neodymium iron boron, this deficiency can be compensated for through multi-polarization design. Ring-shaped magnets are particularly well-suited for such multi-polarized magnetic circuit layouts.
Therefore, the ring design represents the optimal balance between production, performance, and application considerations for bonded neodymium-iron-boron magnets. This is also why their shape differs significantly from that of sintered neodymium-iron-boron magnets.
Our company is a professional supplier of motor magnets. We offer a wide range of bonded and injection molded neodymium magnet samples in various sizes. Please feel free to send us an inquiry if you have any needs.
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