0769-23388351
Toggle Navigation
Among numerous industrial and electronic products, powerful magnets are widely used due to their small size and strong magnetic force. However, when design pursues lighter, thinner, and more compact products, the thickness of magnets becomes a key parameter. Many people wonder: why can't powerful magnets be made too thin?
This is because neodymium magnet is a sintered material, which is hard and brittle like ceramic. Once the thickness becomes too thin (such as 0.3mm, 0.2mm, or even thinner), it is highly prone to chipping and cracking during processes like slicing, grinding, electroplating, and packaging, resulting in a significant drop in yield rate.
The accompanying image shows a thin flat round rare earth magnets.
Additionally, the magnetic flux (magnetic strength) of magnets is closely related to their volume, particularly with thickness having a significant impact on “magnetic force.” Even when using high-performance grades (such as N52), the magnetic flux density of overly thin magnets decreases rapidly, resulting in weakened magnetic force that fails to meet design requirements.
Another important point is that ultra-thin magnets are more prone to demagnetization due to high temperatures or external interference, which is unacceptable for electronic products and sensors that require high stability.
Although neodymium magnets cannot be made infinitely thin, through years of process refinement, 0.5mm has gradually become a relatively mature and mass-producible thickness.
Some customers' product designs require magnet thicknesses of 0.2mm or 0.3mm. What can be done?
For such thin thicknesses, we are also unable to assist, as the blades of magnet processing machines have a certain thickness, and we cannot produce them if they are too thin. A thickness of around 0.5mm is much easier to produce.
If your product has special requirements for magnet thickness, we recommend prioritizing thicknesses of 0.5mm or above and communicating with a professional magnet manufacturer to discuss customization options.
Some examples of our ultra-thin strong magnets:
Neodymium round magnets with a diameter of 5mm and a thickness of 4mm are more commonly used. If you feel that the magnetic force is not enough, the performance level can be appropriately improved. Welcome to consult the price!...
Our company is a permanent magnet supplier from China. We are good at processing micro-precision magnets, high-performance magnets, special-shaped magnets, and multi-pole ring magnets. The quality is guaranteed and the price is not expensive. We look forward to customer consultation from all over the world....
The sample is an N52 high-performance ultra small hole radially sintered neodymium rotor magnet, with specifications of 2mm outer diameter, 0.9mm bore, and 4.5mm height....
This is a square neodymium magnet for earphones, the length and width are 5mm, the thickness is 2mm, the thickness is magnetized, the surface is galvanized, 1mm or other thickness can also be selected, non-high temperature grade, the maximum working temperature is less than 80 ℃...
The sample is a high-performance ferrite rotor magnet with a radial 3-pair pole configuration (6 poles), measuring 20mm in outer diameter, center bore diameter of 8mm, and height of 27mm. surface magnetic flux density reaches approximately 1800 Gauss....
This is a small-sized short bar shaped neodymium iron boron strong magnet with a specification of 1.5 × 1.5 × 10mm. It is made of N42 performance grade neodymium iron boron material and magnetized along the length direction (10 mm direction)....
This is a rare earth NdFeB strong magnet with a length of 30mm, a width of 20mm and a thickness of 10mm. Surface treatment is nickel-copper-nickel, and the thickness is 10mm. Magnetization direction is length direction....
This product is a small rare earth NdFeB magnet ring, with gold plated surface, N52 grade, the magnetization method is axial, the size is 5mm outer diameter, 2mm inner hole, 2mm height, and the tolerance can be ±0.02mm. Welcome to consult us for the price....