This is a multipole rotor magnet, is made of injection molded ferrite. The specific size is 28.5mm in outer diameter, 22mm in inner diameter, 15mm in thickness. The direction of magnetizing is radial and 8 pole. Mainly used for all kinds of permanent magnet DC motor.
Some customers will also ask if they can install the middle parts themselves? Yes, of course, if you need to be more stable, you can embed it and then connect it with glue. However, injection molding magnetic is a magnet that can be molded once, which is also one of its advantages, eliminating the trouble of secondary processing. If you are worried that it is not applicable, we will make the sample first and mail it to you, you can test and confirm.
other size ferrite ring rotor magnet:
Motor 4 pole 8 pole plastic magnetic ferrite rotor magnet
4 pole sintered ferrite rotor magnet ringfor motor 25mm x 12.6mm