1. Magnetic force difference. This is the biggest drawback of ferrite, and most of the reason for not choosing it is because its magnetism does not meet the requirements.

2. Large volume. Weak magnetic force naturally requires a larger volume, as many high-tech products such as smartphones and robots currently use neodymium iron boron with small volume and strong magnetic force.

3. Poor tolerance control. The tolerance of ferrite magnets is usually greater than that of neodymium iron boron, and of course, ferrite can also be precision machined. The magnetic ring can be ground internally and externally, but the cost is relatively high.

4. It is not easy to process into complex and irregular magnetic shapes. This is also the main reason why most ferrite magnets we see are circular and square.

Oh, so there are so many drawbacks to ferrite magnets, do you know all of them?