NdFeB magnets, featuring high magnetic strength, excellent energy product, and compact size, are renowned for their efficiency. Resistant to demagnetization and capable of operating in harsh environments, these magnets are versatile in applications, ranging from electronics to automotive industries.
The N52 Round Pot Hole Neodymium Magnet represents the pinnacle of permanent magnet technology, engineered for high-performance holding applications across industrial and commercial sectors. Crafted from premium NdFeB (Neodymium-Iron-Boron) alloy, this magnet boasts the highest available magnetic energy product in its category, with a BHmax rating of 49.5 - 52 MGOe—significantly outperforming lower grades like N48 (45 - 48 MGOe) . Its distinctive round shape with a central pot hole design combines powerful magnetic force with versatile mounting capabilities, making it ideal for applications requiring secure attachment to posts, shafts, or rods. With a maximum operating temperature of 80°C (176°F) and a Curie temperature of 310°C, this magnet delivers reliable performance in controlled environments while maintaining exceptional coercivity (HCJ > 11 kOe) to resist demagnetization .
Product Features
Magnetic Strength
At the core of this magnet’s performance is its N52 grade material, which generates a surface field of up to 5200 Gauss and pull forces exceeding 147 lbs in standard configurations . This superior magnetic output ensures secure holding even for heavy components, outperforming traditional ferrite magnets by up to 10 times in equivalent sizes.
Precision Engineering
Manufactured with tight tolerances of ±0.05 mm on diameter and ±0.1 mm on thickness, the round pot hole design enables seamless integration into mechanical assemblies . The central hole accommodates fasteners or shafts, eliminating the need for additional mounting hardware and reducing installation complexity.
Durable Protective Coating
Each magnet features a Ni-Cu-Ni (nickel-copper-nickel) plating that provides excellent resistance to corrosion, oxidation, and wear . This multi-layer coating ensures long-term performance in indoor industrial environments, extending the magnet’s service life by preventing surface degradation.
Thermal Stability
While optimized for moderate temperatures, the magnet maintains reversible temperature coefficients of -0.12%/°C for Br and -0.75%/°C for HCJ, ensuring minimal performance loss within its operating range . This stability makes it suitable for applications with consistent ambient temperatures.
Applications
Industrial Holding Systems
Widely used in automation equipment, conveyor systems, and material handling, where its high pull force secures metal components during manufacturing, assembly, or storage. The pot hole design simplifies integration into robotic end-effectors and clamping mechanisms.
Medical Device Assembly
In medical equipment manufacturing, the magnet’s precision and cleanliness (compliant with industry standards) make it ideal for holding tools, fixtures, and components in diagnostic machines and surgical devices .
Consumer Electronics
Employed in magnetic closures for high-end appliances, audio equipment, and smart device accessories, where its compact size and strong holding force enhance product functionality and user experience.
Renewable Energy Systems
Used in small-scale wind turbines and solar tracking systems to secure moving parts, leveraging its reliability to withstand continuous operation in controlled outdoor environments.
FAQ
What distinguishes N52 grade from lower grades like N48?
N52 magnets offer a higher BHmax (49.5 - 52 MGOe) compared to N48’s 45 - 48 MGOe, translating to stronger magnetic force in the same physical size . This makes N52 ideal for applications where space is limited but maximum holding power is required.
Can the magnet be used in high-temperature environments?
The maximum operating temperature is 80°C (176°F) . Exposure to higher temperatures may cause irreversible demagnetization. For high-heat applications, consider heat-resistant grades like N52SH (up to 150°C).
How should the magnet be installed?
The central pot hole allows mounting via screws, bolts, or shafts. Ensure the mating surface is clean, flat, and made of ferrous material to maximize contact and pull force. Avoid contact with strong magnetic fields during installation to prevent demagnetization.
Is the coating resistant to moisture?
Yes, the Ni-Cu-Ni plating provides corrosion resistance against moisture and mild chemicals, making it suitable for indoor industrial environments. For submersion or harsh chemicals, additional protective measures are recommended.
Product Overview
The N52 Round Pot Hole Neodymium Magnet represents the pinnacle of permanent magnet technology, engineered for high-performance holding applications across industrial and commercial sectors. Crafted from premium NdFeB (Neodymium-Iron-Boron) alloy, this magnet boasts the highest available magnetic energy product in its category, with a BHmax rating of 49.5 - 52 MGOe—significantly outperforming lower grades like N48 (45 - 48 MGOe) . Its distinctive round shape with a central pot hole design combines powerful magnetic force with versatile mounting capabilities, making it ideal for applications requiring secure attachment to posts, shafts, or rods. With a maximum operating temperature of 80°C (176°F) and a Curie temperature of 310°C, this magnet delivers reliable performance in controlled environments while maintaining exceptional coercivity (HCJ > 11 kOe) to resist demagnetization .
Product Features
Magnetic Strength
At the core of this magnet’s performance is its N52 grade material, which generates a surface field of up to 5200 Gauss and pull forces exceeding 147 lbs in standard configurations . This superior magnetic output ensures secure holding even for heavy components, outperforming traditional ferrite magnets by up to 10 times in equivalent sizes.
Precision Engineering
Manufactured with tight tolerances of ±0.05 mm on diameter and ±0.1 mm on thickness, the round pot hole design enables seamless integration into mechanical assemblies . The central hole accommodates fasteners or shafts, eliminating the need for additional mounting hardware and reducing installation complexity.
Durable Protective Coating
Each magnet features a Ni-Cu-Ni (nickel-copper-nickel) plating that provides excellent resistance to corrosion, oxidation, and wear . This multi-layer coating ensures long-term performance in indoor industrial environments, extending the magnet’s service life by preventing surface degradation.
Thermal Stability
While optimized for moderate temperatures, the magnet maintains reversible temperature coefficients of -0.12%/°C for Br and -0.75%/°C for HCJ, ensuring minimal performance loss within its operating range . This stability makes it suitable for applications with consistent ambient temperatures.
Applications
Industrial Holding Systems
Widely used in automation equipment, conveyor systems, and material handling, where its high pull force secures metal components during manufacturing, assembly, or storage. The pot hole design simplifies integration into robotic end-effectors and clamping mechanisms.
Medical Device Assembly
In medical equipment manufacturing, the magnet’s precision and cleanliness (compliant with industry standards) make it ideal for holding tools, fixtures, and components in diagnostic machines and surgical devices .
Consumer Electronics
Employed in magnetic closures for high-end appliances, audio equipment, and smart device accessories, where its compact size and strong holding force enhance product functionality and user experience.
Renewable Energy Systems
Used in small-scale wind turbines and solar tracking systems to secure moving parts, leveraging its reliability to withstand continuous operation in controlled outdoor environments.
FAQ
What distinguishes N52 grade from lower grades like N48?
N52 magnets offer a higher BHmax (49.5 - 52 MGOe) compared to N48’s 45 - 48 MGOe, translating to stronger magnetic force in the same physical size . This makes N52 ideal for applications where space is limited but maximum holding power is required.
Can the magnet be used in high-temperature environments?
The maximum operating temperature is 80°C (176°F) . Exposure to higher temperatures may cause irreversible demagnetization. For high-heat applications, consider heat-resistant grades like N52SH (up to 150°C).
How should the magnet be installed?
The central pot hole allows mounting via screws, bolts, or shafts. Ensure the mating surface is clean, flat, and made of ferrous material to maximize contact and pull force. Avoid contact with strong magnetic fields during installation to prevent demagnetization.
Is the coating resistant to moisture?
Yes, the Ni-Cu-Ni plating provides corrosion resistance against moisture and mild chemicals, making it suitable for indoor industrial environments. For submersion or harsh chemicals, additional protective measures are recommended.
SDM Magnetics is one of the most integrative magnet manufacturers in China. Main products : Permanent magnet,Neodymium magnets,Motor stator and rotor, Sensor resolvert and magnetic assemblies.
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108 North Shixin Road, Hangzhou, Zhejiang 311200 P.R.China
