How to measure the surface gauss of cylindrical permennt magnet?

Cylindrical magnet, one of the commonest permanent magnets, is normally of NdFeB or ferrite material. But somebody knows little about the magnetization and how to test the surface gauss of magnet some how. So below is information about that in more detail.

What are magnetization orientations of cylindrical permanent magnet?

There are two traditional magnetization directions, diametrically magnetized and axially magnetized. Usually, disc magnet is magnetized through axle while cylindrical magnet is diametrically magnetized. And of course the actual orientation is subject to customer’s requirement.

How do we test cylindrical magnet’s surface gauss value?

There are two favorable places for testing, both ends and flank of cylindrical magnet. And please kindly note that the testing point must be smooth. Where to measure is actually depend on the permanent magnetic material and cutting direction chosen during the production.

For most cylindrical magnets, the best testing point are the ends. Sliding the gauss meter on the magnet, you could collect data and find the max gauss value. As for diametrically magnetized magnet, please move the gauss meter along the flank of the magnet. Thus the gauss range of magnet is obtained.

Do you have a general understanding of How to measure the surface gauss of cylindrical permanent magnets now?

Tags: permanent magnet, cylindrical magnet