Neodymium Disc Magnets

Product Information 

Neodymium magnets or NdFeB disc magnets are round coin-shaped Neodymium magnets of varying diameter and thickness. Generally the NdFeB disc magnets are axially magnetized i.e. one circular flat face is a North pole, the other circular flat face is a South pole with the distance between the flat faces (the disc thickness) being the distance between the poles (the magnet is magnetized along the central axis of the Neodymium disc magnet).

Our super strong neodymium disc magnets range

from the grade N35, N38, N52 to N35M, N38M... N35H, N38H... N35SH... The coatings of NicuNi, Zinc and , Black Epxoy, Gold, Silver etc are available. Sometimes the disc magnets with a countersunk hole that drilled in the middle to attach it to nonmetallic materials, such as wood or plastic plant. These round magnets can allow the screw’s head to reside below, or maybe with the face of the magnet to ensure it doesn't interfere with the magnet's performance.

Neodymium disc and round magnets are widely used for motor, sensor and holding applications.

Neodymium Disc Magnets Synonyms

Neodymium-iron-boron, Nd-Fe-B, NdFeB alloy 30/100, NdFeB alloy 30/150, NdFeB alloy 30/200, Nd2Fe14B, NdFeB alloy 30/200, neodymium alloy base

CAS 104723-96-8

Neodymium Disc Magnets Specification

Per your request or drawing

We can customized as required

Neodymium Magnets Approximate Pull Information

Coatings, rust, rough surfaces, and certain environmental conditions can significantly reduce the pull force. Please be sure to test the actual pull in your actual application. For critical applications, it is suggested that the pull be de-rated by a factor of 2 or more, depending on the severity of a potential failure.

Manufacturing Methods for Neodymium Magnets

Our neodymium discs are sintered for optimal magnetic strength and axially magnetized (the magnetism direction is along the axis of the magnet from the north to the south poles). Common finishing options include uncoated, nickel (Ni-Cu-Ni) and gold (Ni-Cu-Ni-Au) plated coatings.

Standard Dimensional Tolerances for NdFeB Disc Magnets

Standard diameter tolerances for Rare Earth Magnets (SmCo & NdFeB) based on the following dimensions:

+/- 0.004” on dimensions ranging from 0.040” to 1.000”.

+/- 0.008” on dimensions ranging from 1.001” to 2.000”.

+/- 0.012” on dimensions ranging from 2.001” to 3.000”.

*Tolerance on thickness is +/-0.004” regardless of size.

Properties (Theoretical)

Features include:
• Neodymium magnets are the most powerful commercially produced magnets.
• Neodymium magnets are hard and brittle and may chip or break if dropped.
• Disc Neodymium magnets are magnetized through the thickness or diametrically magnetized.
• Uncoated neodymium magnets may corrode in humid conditions
• Operating temperatures vary among material grades.Usually ranges from 80°C to 220°C. 
• Keep cautious when handling magnetized neodymium magnets, their exceptional magnetic force may cause them to attract to metal (or to each other) so strongly that fingers in their path could prove painful.

Rare Earth Disc Magnets, also called disc neodymium magnets, are the perfect marriage of small size and maximum power or strength.We provide a large variety of Neodymium disc magnets in a variety of sizes and with several coatings such as Nickel, zinc or Epoxy etc for protection against corrosion.

Follow us to choose the right magnets you want ：

If you have any inquiry, please kindly advise the following items:

Dimensions or drawing with tolerances.

Material grade or magnetic properties.

Magnetic direction
Surface coating(if necessary)

Quantity and delivery terms

Applications of  Neodymium Disc Magnets
This type of permanent magnet can be used for different applications such as: metal separation, magnetic therapy, brochure closures, school science experiments, jewellery-making, packaging, book-binding and POS displays, as well as engineering applications.
With a diameter greater than the thickness, our rare earth disc magnets provide a very strong magnetic field and high coercivity. Excellent value for money ensures that Neodymium discs are among the most widely used commercially available magnets.
Please contact our sales team if you require more information about our neo disc magnets.

Available dimensions and tolerance for Disc Magnets/Cylinder Magnets:

Packing of Neodymium Disc Magnets

Standard Packing:

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes Special package is available on request.

ATTs’ Neodymium Disc Magnets are carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

Chemical Identifiers