ネオジムリング磁石は、ディスクまたはシリンダーのようなものです, しかし、中心穴付き. Most neodymium ring magnets and tube-shaped magnets are axially magnetised: N極とS極が平らな円形表面上に位置しています (“天地”). The few diametrically magnetised neodymium ring magnets with poles “左右” 特にマークされています.

Due to their shape, it is very tempting to screw-mount ring magnets. But please keep in mind, the material is very brittle and chips easily. That is why we advise against the screw-mounting of ring magnets with holes. It is much safer and easier if you use screw-on magnets 若しくは countersunk pot magnets.