Rare Earth Countersunk Magnet

Rare earth countersunk magnet represent the most advanced class of permanent magnets commercially available. Their extraordinary strength stems from the unique crystalline structures formed by alloys of rare earth elements (like Neodymium, Praseodymium, Samarium) with transition metals (Iron, Cobalt). This category primarily includes Neodymium Iron Boron (NdFeB) and Samarium Cobalt (SmCo) magnets. The design of rare earth countersunk magnet adds a critical mechanical fastening capability to these powerful materials, creating a component that is both incredibly strong and reliably mounted for severe service conditions.

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Product Information

Product Name	Rare Earth Magnet
Grade & Working Temperature	Grade	Working Temperature
	N30-N55	+80℃ / 176°F
	N30M-N52M	+100℃ / 212°F
	N30H-N52H	+120℃ / 248°F
	N30SH-N50SH	+150℃ / 302°F
	N25UH-N50UH	+180℃ / 356°F
	N38EH-N48EH	+200℃ / 392°F
	N28AH-N45AH	+220℃ / 428°F
Magnet Direction	Thickness, Axial, Radial, Radiation, Multi-pole, etc.
Coated	Zn, Ni, Epoxy, Au, Ag, Epoxy, etc...	Salt spray test can reach 38-96 hours
Tolerance	Lowest can reach ± 0.01mm
Stock	If in stock, free sample and deliver at same day; Out of stock, shipping time is same with bulk order.

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Magnet Magnetization Direction

The direction of magnets has been determined during pressing. The magnet magnetization direction of the finished product can't be changed once it is finished. Please be sure to confirm your required magnet magnetization direction.

Regular Coating

Surface treatment of curved neodymium iron boron magnets, commonly including galvanizing, nickel plating, nickel copper nickel plating, epoxy resin, gold plating, etc.

Certification

Our state-of-the-art factory, certified to IATF 16949 and ISO 9001, ensures every magnet is traceable and meets stringent quality criteria. We are a compliant global supplier for sensitive industries.

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Advantage of Rare Earth Countersunk Magnet

Enhanced System Efficiency

Higher BHmax reduces core losses in motors and generators, leading to lower operating temperatures and increased overall system efficiency and lifespan.

Stable High-Temp Performance

Specialized grades (e.g., EH, SH, UH) maintain a high percentage of their room-temperature energy even at 150°C+, crucial for demanding automotive and industrial drives.

Miniaturization Enabler

Achieve the same or greater magnetic output from a smaller magnet volume, allowing for more compact and lightweight product designs without sacrificing power.

Optimized for Dynamic Fields

Our proprietary manufacturing ensures low eddy current losses, making these magnets ideal for high-frequency applications like brushless DC motors and fast-acting solenoids.

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