Home / Blog / Where are the NdFeB block magnets used?

Where are the NdFeB block magnets used?

What are neodymium magnets?

The neodymium permanent magnet is the powerful magnet that can be obtained anyplace on the planet. The magnetic fields that are produced by magnets made of neodymium are unmatched in size and strength when compared to the magnetic fields that are produced by magnets manufactured of other types of materials. They are the product of choice for a wide variety of consumer, commercial, and industrial applications as a result of their exceptionally high magnetic strength as well as their relatively low cost that they cost.

What are NdFeB block magnets?

The draw strength of neodymium block magnets can be as much as 300 pounds, which is impressive given their relatively small size. The magnetic properties of neodymium magnets are significantly superior to those of other permanent magnet materials, making them the strongest permanent rare-earth magnets currently available on the market. Neodymium block magnets are the product of choice for a wide variety of applications in the consumer, commercial, and technical sectors due to their exceptional magnetic strength. Neodymium magnets, also known as NdFeB block magnets, are typically described using their three dimensions as the defining characteristic. The first two dimensions provide specific information regarding the size of each magnet pole face, while the third dimension establishes the distance that separates the poles.

Applications of NdFeB block magnets:

NdFeB block magnets find widespread application in a variety of motor applications, including electric bicycle motors, elevator traction machine motors, refrigerator air conditioner motors, wind-driven motors, speakers, microphones, hearing aids, stereo headphones (MP3, MP4), telephone receivers, electro-acoustic sensors, magnetic gears, magnetic brakes, magnetic fixtures, magnetic salvage devices, magnetic bearings, magnetic pumps, magnetic valves, magnetic seal doors, and many more.

Features of NdFeB block magnets:

  • Neodymium Block Magnets, NdFeB Block Magnets, and Neodymium Cube Magnets are all available in a variety of dimensions and grades.
  • The dimensions can go up to a maximum of 200 millimeters by 150 millimeters by 80 millimeters.
  • To protect the magnets against corrosion, a variety of coatings, such as NiCuNi (or Ni-Ni), White Zinc, Color Zinc, Epoxy, Phosphatizing, Teflon, Au, Ag, and so on, are required to be applied.
  • It is characterized by a high magnetic coercivity.

NdFeB block magnets

The manufacturing process:

  1. Mixing: 

To begin, all of the components necessary to produce the desired quality of magnet are loaded into a vacuum induction furnace, where they are subjected to heat and melted together to produce the alloy material. After the mixture has been cooled, it is cast into ingots, which are further processed in a jet mill to produce fine grains.

  1. Grinding/Pressing: 

After that, the extremely fine powder is compacted inside a mold while magnetic energy is delivered to the mold at the same time. Magnetism is produced by a coiled-up piece of wire that, when an electrical current is run through it, takes on the characteristics of a magnet.

  1. Sintering: 

The previously magnetized material has now been demagnetized and will undergo re-magnetization at a later stage in the process. At this point, the material has become far too flexible and fragile to be of any practical use. The material is next subjected to a process known as sintering, which involves heating it to almost the point where it melts. This causes the powdered magnet particles to join together and is the next phase in the process. This procedure takes occurs in an atmosphere that is devoid of oxygen and is inert.

  1. Cooling: 

The material that has been heated is cooled, which is a process that rapidly cools the material. This technique of quick cooling reduces the number of places with low magnetism and increases overall performance. At this point, the raw magnets go through the process of being machined into their final shape, which in this case is that of block magnets.

  1. Coating:

Neodymium block magnets can be coated in a wide variety of materials, depending on the desired effect. A combination of nickel, copper, and nickel is by far the most typical, although they can also be coated in other metals or even rubber or PTFE if necessary.

  1. Final Step: 

After being plated, the completed product is re-magnetized by being placed inside a coil. This coil, when energized by an electric current, generates a magnetic field that is three times more powerful than the needed strength of the magnet. Because this is such a powerful operation, the magnet, if it is not held in place, can be pushed out of the container like a bullet if it is not held in place.

  1. Checking: 

After the NdFeB block magnets have been prepared, they undergo tests and confirmations. It is put through a variety of tests, and if it is successful in all of them, then it is ready to be packaged.

NdFeB block magnets from Mag spring: 

Mag Spring is an online company that sells NdFeB block magnets that are exceptionally powerful. They are built of rare earth materials, which can retain their magnetic properties even when heated and have a magnetic pull that is far higher than that of other magnet materials. When it comes to purchasing neodymium block magnets, the only place you need to go is Mag Spring because of the technology and expertise that they possess. We are able to produce magnets of any shape, size, or material thanks to the tools and expertise at our disposal. As a result, we can produce anything that you require. For example, NdFeB block magnets.


The usage of NdFeB block magnets is widespread because of their versatility. Therefore, you should purchase those that are of high quality. At Mag Spring, you will be able to get block magnets of the finer quality. Come to our website to make your purchase of the block magnets.

Contact us