AXIS MAGNETICS

Sintered NdFeB Magnets

High-energy neodymium magnets in blocks, arcs, rings, discs, and precision machined geometries for production programs.

Motors, actuators, sensors, high-force devices

Sintered NdFeB Magnets examples

Material and performance notes

Sintered NdFeB provides the strongest magnetic output in the smallest package. It is the usual choice when force, torque, or compact size matters more than the shape freedom of molded magnet materials.

Highest energy density among common permanent magnet materials, making it useful for compact motors, sensors, actuators, and high-force devices.

More brittle and corrosion-sensitive than ferrite, so coating, edge protection, handling, and operating environment matter.

Temperature and demagnetization resistance are selected around the application, including HRE-Free options where licensing exposure is a concern.

Common custom NdFeB forms

Sintered NdFeB magnets can be sourced as blocks, discs, rings, arcs, segments, cylinders, countersunk features, or precision machined geometries. Shape, magnetization direction, edge condition, plating buildup, and brittleness should be reviewed together before sampling.

Grade, temperature, and demagnetization margin

A grade should be selected around the operating point: required output, maximum magnet temperature, reverse field exposure, magnet thickness, air gap, duty cycle, and expected end-of-life margin. The highest energy grade is not always the safest production choice.

Coating and validation inputs

NdFeB is corrosion-sensitive, so coating choices such as NiCuNi, epoxy, zinc, parylene, e-coat, phosphate, or encapsulation should be tied to humidity, salt spray, adhesive bonding, handling, cosmetic, and cleanliness requirements.

Sourcing risk and alternate planning

Programs with rare earth supply risk can compare standard sintered NdFeB, HRE-Free NdFeB, bonded NdFeB, injection molded magnets, ferrite substitutions, or assembly-level redesigns when the magnetic circuit allows.

Common sourcing questions

What are Sintered NdFeB magnets used for?

They are often used in compact motors, sensors, actuators, latches, high-force devices, and assemblies where high magnetic output is required in limited space.

Can NdFeB magnets be custom machined?

Yes, but grinding, slicing, chamfering, drilling, and tight-tolerance finishing should be planned around brittleness, coating buildup, edge condition, and production yield.