Magnet Rings

Neodymium Ring Magnets — Annular Rare Earth Magnets with Center Bore

Ring magnets — also called annular or donut magnets — are axially or diametrically magnetized neodymium discs with a precision center bore. JC Magnetics carries ring magnets in multiple OD/ID/thickness combinations, making them ideal for speaker voice coil assemblies, linear bearing systems, magnetic encoders, shaft-end position sensing, and medical device actuators. The through-hole design allows screws, shafts, or wires to pass through the magnet body, enabling compact mechanical integrations not possible with solid disc geometries. Our ring magnets are manufactured from sintered NdFeB to N52 grade specifications and finished with standard Ni-Cu-Ni plating. For custom ID/OD requirements beyond our catalog, inquire about our custom magnet order program.