Neodymium Disc Magnets

Adams Magnetic Products offers high-quality neodymium disc magnets, widely used for motor, sensor, and holding applications. These disc magnets are known for their exceptional strength and reliability.

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Assorted small silver neodymium disc magnets of different sizes arranged on a white surface, with a U.S. penny beside them.

What Are Neodymium Disc Magnets?

Neo disc magnets are round, flat rare earth magnets made from an alloy of neodymium, iron, and boron (NdFeB). They are known for their exceptionally strong magnetic force relative to their size and are commonly used in compact, high-performance applications.

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Advantages

  • Unmatched Strength: Neodymium magnets are the most powerful magnets available.
  • Versatility: Suitable for a wide range of applications, including motors and sensors.
  • Cost-Effective: Advances in manufacturing have made them affordable for everyday use.
  • High Magnetic Properties: Exceptional holding power.
  • Hard and Brittle: Prone to chipping and breaking if dropped.
  • Corrosion Resistance: Uncoated magnets may corrode in humid conditions.
  • Temperature Tolerance: Operating temperatures vary among material grades.
  • Assembly: Often assembled using strong adhesives like Loctite 325.
  • Handling Precautions: Strong magnetic force requires careful handling.

Neodymium disc and rod magnets are used in:

  • Motors
  • Sensors
  • Holding devices
  • Various industrial and consumer applications

Specifications

Contact us at 800-747-7543 if you don’t see what you’re looking for in this brief listing.

3D model of a red-and-blue cylindrical magnet with a vertical arrow.

Neodymium Discs, Magnetized through Thickness

Additional sizes, plating options, and grade choices are also available upon request and may be on hand from stock.

  • Dimensions are listed in inches
  • All of these neodymium disc and rod magnets are nickel-plated
  • All of these magnets are supplied magnetized

Contact us at 800-222-6686 if you don't see what you're looking for in this brief listing.

Item#DiameterThicknessGradePounds Pull
50B6060
0.0600.06052110.1
50B0537
0.1000.06050140.4
50B0078
0.1200.12035120.5
50B0717
0.1250.03248120.3
50B0505
0.1250.12530140.5
50R0178
0.1250.12552110.8
50B0676
0.1870.12535121.1
50B0219
0.2480.20030142.2
50B0376
0.2500.10035121.5
50B0727
0.2500.10042121.8
50B0091
0.2500.12530121.6
50B0502
0.2500.25038143.0
50B0675
0.2500.25042123.3
50R0037
0.2500.37535143.0
50R0020
0.2500.50030172.5
50B0658
0.3120.12552114.0
50B0389
0.3750.06035121.7
50B0155
0.3750.12535123.5
50B0669
0.3750.12552115.3
50B0522
0.3750.25048177.8
50B0149
0.5000.12535125.3
50B0733
0.5000.12548127.0
50B0132
0.5000.25035129.0
50B0692
0.5000.250421210.5
50B0368
0.5000.375351211.0
50B0395
0.5000.500351212.0
50B0292
0.6250.06030142.5
50B0114
0.6250.375351215.5
50B0238
0.7500.12535128.0
50B0379
0.7500.375351220.0
50B0321
1.0000.06045125.2
50B0058
1.0000.250351422.0

Interested in Learning More?

Adams is ready to be a part of your magnetic products with stock and custom disc magnets. Tell us about your application, and our engineering team will help identify the right fit. Contact us to find out more.

Prefer to call? 800-747-7543

What happens next?

A customer service representative will get back to you shortly. Depending on your requirements, a member of our engineering or business development team may follow up with you.

Frequently Asked Questions

How strong are neodymium disc magnets?

Neodymium magnets are the strongest permanent magnets available today. Strength depends on size, thickness, and grade (such as N35–N56). Even small discs can generate significant holding force, making them ideal for space-constrained designs.

These magnets are available in multiple grades, typically ranging from N35 to N56. Higher grades offer greater magnetic strength but may have lower maximum operating temperatures. Adams Magnetic Products can help you select the right grade based on performance and environmental requirements.

Most Neo disc magnets are coated to protect against corrosion. Common finishes include:

  • Nickel (Ni-Cu-Ni)
  • Epoxy
  • Zinc
  • Gold (for specialized or aesthetic applications)

The best coating depends on the operating environment, including humidity, temperature, and exposure to chemicals.

These disc magnets typically operate up to 80°C (176°F). Higher-temperature grades are available that can withstand temperatures up to 230°C (446°F), though magnetic strength may vary. Always confirm temperature requirements before selecting a magnet.

Yes. Neodymium magnets are hard but brittle and can chip or crack if allowed to snap together or impact a hard surface. Proper handling, spacing, and protective coatings or housings are recommended, especially during assembly.

Absolutely. They can be customized by:

  • Size and thickness
  • Grade selection
  • Coating or plating
  • Magnetization direction (typically axial for discs)
  • Tight tolerances for engineered assemblies

Adams Magnetic Products specializes in both standard and custom magnet solutions.

These magnets are axially magnetized, meaning the magnetic poles are on the flat circular faces. Diametric magnetization is also available for specific design requirements.

Strong neodymium magnets require careful handling. Fingers can be pinched if magnets snap together, and they should be kept away from electronics, pacemakers, and magnetic storage media. Proper safety guidelines should always be followed.

Key factors include required magnetic force, available space, operating temperature, environment, and cost targets. Adams Magnetic Products’ engineering team can help evaluate your application and recommend the optimal magnet solution.

Yes. In addition to supplying neodymium disc magnets, Adams Magnetic Products offers value-added services such as magnet assemblies, bonding, coating selection, and design support to simplify your supply chain.