Samarium Cobalt disc magnets can be magnetized in different directions according to the final magnetic structure. The most common option is axial magnetization, where the north and south poles are located on the two flat circular faces.
Diametrically magnetized disc magnets may also be used when the magnetic field needs to act across the diameter or side direction of the disc. This magnetization direction changes the field distribution and should be confirmed clearly in drawings or technical requirements before production.
The correct magnetization direction depends on how the disc magnet will be installed and how the magnetic field should interact with the surrounding structure.
Samarium Cobalt disc magnets are hard and brittle, so thin edges, small diameters, and exposed surfaces should be handled carefully during assembly. Chipping or cracking can occur if the magnet is impacted, pressed unevenly, or forced into an unsuitable seat.
SmCo disc magnets are often fixed by adhesive, mechanical holders, caps, housings, or surrounding steel parts. These parts can affect positioning, working gap, bonding reliability, and final magnetic performance, so the magnet should be reviewed together with the structure around it.
SmCo magnets usually have better corrosion resistance than Neodymium magnets and are often used without additional coating. Even so, surface condition may still matter when bonding strength, cleanliness, insulation, or special environmental requirements are involved.
Custom Samarium Cobalt disc magnets are usually produced according to the required diameter, thickness, material grade, surface condition, and magnetization direction. The disc shape is simple, but these details still need to match the final magnetic structure.
For projects that require higher temperature stability, corrosion resistance, or long-term magnetic reliability, SmCo disc magnets can provide stable performance in a compact round form. SDM Magnetics can support custom SmCo disc magnets based on drawings, samples, or project-specific requirements.
