Neodymium, Iron, Boron
Hot-pressed
Various magnetization patterns
Product
Powerful, versatile, and cost-effective
Hot-pressed NdFeB magnets are a special kind of permanent magnet. They are characterized by high performance and precise pole transition, are Dy-free, and are manufactured using the extrusion process. Radial pole alignment is achieved through mechanical deformation. The hot-pressed NdFeB magnet is versatile, suitable for motors with rotor diameters ranging from 6 to 80 mm. It finds applications in a variety of motors, including servo motors, EPS motors, spindle motors, stepping motors, synchronous machines, DC motors, and brushless DC motors. Additionally, it is utilized in sensor applications. By replacing segment magnets and being adhered as a ring onto rotor shafts, it streamlines rotor assembly, making it simpler, more reliable, and cost-effective.
More efficient assembly
Lower tolerances
Inherently better corrosion resistance
General
Setting new standards
Hot-pressed NdFeB magnets are radially oriented, anisotropic, dysprosium-free permanent magnets. They exhibit high coercivity and are among the most powerful magnets on the market. The magnet is available in various sizes of solid rings. The micrograin size of the raw material enables reducing the HRE content and thus lowering costs. Assembly is relatively simple – it consists of a single piece. Compared to sintered, radially oriented ring magnets, very small outer diameters are possible. Hot-pressed NdFeB magnets offer excellent corrosion resistance with minimal internal porosity and are heat-resistant up to 180 degrees Celsius.
Chemical Resistance
Largely Resistant
Motor oil
Organic solvents
Not Resistant
Uric acid
Acids and alkalis
Salts in aqueous solution
Production Process
Hot-pressed NdFeB magnets
Hot-pressed NdFeB magnets are manufactured through a multi-step process, from powder acquisition to cold and hot pressing, to the final extrusion in a hot state. Magnetization is achieved through the thermomechanical process, requiring no magnetic field for production. The magnet shape and size can be determined by the tools used.
Note
While hot-pressed NdFeB magnets boast impressive performance, they do come with drawbacks. Their versatility in shape fabrication is limited, and their production, involving rare earth metals, can be relatively costly. It is wise to explore various magnet options depending on your specific application needs, aiming to minimize any potential extra expenses.
Technical data
What the hot-pressed NdFeB magnet can do
The potential of hot-pressed NdFeB magnets extends beyond standalone applications. These multi-pole magnets are effortlessly integrated into assemblies, offering robust performance without requiring additional protection up to 12k RPM. Their utilization hinges on the magnetization form and the corresponding technical attributes.
NdFeB hot pressed, radial anisotropic
Preview
Further Questions? Talk to an Expert!
Moritz Erdmann
Key Account Manager
Performance that delivers
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