NdFeB magnets for compact designs
and dependable operation.

01 / NdFeB MAGNETS

High-performance magnets

Make more of limited space.

Select NdFeB materials for target magnetic properties and actual operating temperature. Company materials list N52H, N55H, N58H and SH, UH, EH options, evaluated with operating conditions and sample validation.

• Magnetic properties & demagnetization resistance
• Temperature, magnetic circuit & operating conditions
• Confirm grades & performance reports by project

02 / NdFeB MAGNETS

Precision miniature magnets

Small dimensions. Detailed requirements.

Miniature parts must work in a real assembly. Use drawings to define critical dimensions, edges, magnetization and inspection datums, including dimensions after finishing in sample approval.

• Critical dimensions & assembly fit
• Edges & final coated dimensions
• Magnetization direction & inspection datums

03 / NdFeB MAGNETS

Custom-shaped magnets

Magnets shaped for your design.

Beyond rings and blocks, consider holes, arcs, steps and custom profiles for the available assembly space and magnetic circuit. Evaluate slicing, grinding and forming against drawings, machining datums and measurable requirements.

• Holes, arcs & custom profiles
• Machining datums & dimensional requirements
• Move into production after sample approval

04 / NdFeB MAGNETS

Coated magnets

Consider more than the surface.

Coatings affect the operating environment, final dimensions and assembly. Company materials list colored zinc, blue-white zinc, Ni-Cu-Ni, electroless nickel, composite coatings and epoxy. Confirm treatment and test conditions for bonding, press fitting and corrosion requirements.

• Surface finishing & operating environment
• Coating thickness & finished dimensions
• Bonding, press fitting & validation

05 / GRAIN BOUNDARY DIFFUSION

Grain boundary diffusion magnets

Consider demagnetization resistance as temperatures rise.

Dy/Tb grain boundary diffusion concentrates relevant elements near grain boundaries, offering a material route to balance remanence and demagnetization resistance. Zhongmai coordinates related material sourcing, machining, finishing and sample validation.

• Evaluate material suitability for dimensions & thickness
• Confirm temperature, magnetic circuit & opposing-field conditions
• Refer to the N48UH diffusion option in company materials

Blue-grey represents grains; warm colors highlight boundaries. The visual does not show measured structure, diffusion depth or results. It does not establish an in-house diffusion line. Material and component properties are confirmed by project.