China Neodymium And Ferrite Magnets Manufacturer & Supplier 
Many people wonder whether the magnetic rings on magnetic wheels are ordinary magnets. In reality, while magnetic wheel rings may resemble common ring magnets in appearance, they possess unique design and application characteristics.
Ordinary magnetic rings usually have only two poles, one south pole and one north pole, with a relatively uniform magnetic field distribution. The magnetic rings in magnetic wheels are often subjected to special magnetization processes, no longer simply two poles, but multipole distributions such as 8 poles, 10 poles, 12 poles, etc., to achieve a uniform magnetic field and stable transmission effect. Therefore, although it looks like a magnetic ring, its magnetic pole structure is different from that of a regular magnetic ring.
The magnet on the magnetic wheel in the illustration is a sintered neodymium ring magnet.
So, if you want to repair the magnetic ring on the magnetic wheel, you cannot just find a similar magnet to replace it. But it requires the same size, magnetic pole distribution, and magnetic force.
Why?
Because the working principle of magnetic wheels relies on magnetic field coupling to transmit torque, if the size, magnetic poles, or magnetic force do not match, it will cause the magnetic field to not dock correctly, resulting in a decrease in power transmission efficiency. Uneven magnetic force between the rotor and stator can cause vibration or jamming.
In short, magnetic wheel rings are not ordinary magnets. They are typically specialized rings magnetized with multiple radial or skewed poles, made either from sintered neodymium ring magnets or bonded neodymium ring magnets.
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