Ferrite magnets

Ferrite magnets (ceramic magnets).

Ferrite or ceramic magnets are still the most commonly used, with an energy product of 1 to +- 4.3 MGOe.

Pga. Due to increasingly strict environmental requirements, barium ferrite has been replaced by stontium ferrite in recent years.
Ferrite is the cheapest magnetic material and has a high resistance to corrosion, which means that surface treatment (coating) is unnecessary.

This magnetic material is hard and fragile and needs to be worked with diamond, preferably when it is not magnetic.

Because it can shrink during the sintering process, a tolerance of +- 2% should be taken into account when determining the dimensions. If machined +- 0.1 mm. Tighter tolerances are available if desired.

Ferrite magnets are available both isotropic and anisotropic and are used in many different products such as speakers, magnetrons, measuring instruments, toys, motors, reed switches, etc.

Maximum usable temperature is 225º C, depending on the specification, dimensions and system design.

For specifications, see the table. For magnetization options, see page 3.

The minimum dimension for block magnets is 2 x 2 x 2 mm and the maximum dimension for this type is 270 x 90 x 25.4 mm.

The minimum dimension for a round magnet is Ø 2 x 1 mm and the maximum dimension for this type is Ø 156 x 25 mm.

The minimum dimension for ring magnets is 8 x 2.5 x 3 mm and the maximum dimension for this type is Ø 256 x Ø* x 25 mm.
(*inside diameter after consultation).

For the most current specifications, dimensions and curves, contact Elektrokul A/S