Axial Ring Magnet
Axially Magnetized Ring Magnet
Axial ring magnet means axially magnetized ring magnet. It’s one of the commonest magnet types for neodymium ring magnet. Neodymium magnets are the strongest magnets commercially available, which are made of iron, boron, and rare earth alloys such as praseodymium-neodymium. Neodymium ring magnets are commonly used in holding applications and most of them are axially magnetized.
Axial magnetization means that a ring magnet is polarized on the two ends. The magnetic flux goes from one end to the other.
Measurements of Axial Ring Magnet
To describe the size of a standard ring magnet, three dimensions are needed. They are outer diameter (OD), inner diameter (ID), and thickness (THK). For a countersink ring magnet, countersink diameter and countersink depth are needed in addition to those three dimensions. Some pot magnets use axially magnetized ring magnets.
Magnet axially magnetized in sectors
It’s also possible to axially magnetize a neodymium ring magnet in sectors. A special magnetizing coil needs to be designed according to the size and sector numbers of the ring magnets. A typical application of axial ring magnets magnetized in sectors is magnetic perfume cap. Perfume with magnetic cap feels higher end just because the cap opens automatically by the opposite magnetic field when rotating the cap by a certain degree.