This is ring neodymium magnet with a D hole at the center, the material is rare earth neodymium. It plated black epoxy. The specific size is 6.5mm in outer diameter, 3mm in hole diameter, Height 3.7mm, The direction of magnetizing is radial external 8 pole. If you have more magnetic pole requirment, we also can do it.
For example: Small inner hole multi pole bondedmagnet rotor ring 24 poles
The force is about 2200 gauss. The shaped of hole we can process different shaped according your drawing, or you can choose countersunk hole, small through hole and so on. This magnet can be used in air conditioning, fan motors, hybrid vehicles, micro pump motors, encoders, water flow sensors, electrical appliances and so on.
The sample display of black epoxy ring magnet with D hole:
The radial 8 pole neodymium magnet with D hole:
If you need a multi-pole ring magnet, please contact magnet specialist Courage!
View more specifications for bonded neodymium magnets; https://www.couragemagnet.com/tags/286.html