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In the field of magnetic couplings, neodymium-iron-boron magnets serve as the core functional material and directly determine the upper limit of a product’s performance. Magnetic couplings essentially rely on magnetic fields to achieve contactless torque transmission, and neodymium-iron-boron magnets, with their ultra-high magnetic energy product (BHmax), have become the mainstream and irreplaceable material of choice. Compared to traditional mechanical couplings, magnetic couplings achieve power transmission through magnetic coupling, which not only features a more advanced structure but also places higher demands on magnet performance.
As for the role of the magnets, their primary function is to provide a stable and powerful magnetic coupling force. The inner and outer rotors form a closed magnetic circuit via the magnets, enabling synchronous transmission without physical contact.
High-Power Neodymium Ring Magnets
One of the greatest advantages of neodymium-iron-boron magnets is their high power density. This enables magnetic couplings to be designed to be compact and lightweight, making them particularly suitable for space-constrained equipment such as magnetic drive pumps, precision transmission systems, and automated machinery.
Furthermore, neodymium magnets significantly enhance the reliability and safety of magnetic couplings. Since the transmission process is entirely contactless, there is no wear or risk of mechanical seal failure, enabling true “zero leakage”—a critical factor in industries such as chemicals, pharmaceuticals, and food processing.
In terms of application adaptation, magnet manufacturers can provide highly customized magnet solutions. For example, arc-shaped segment magnets or solid magnetic rings can be selected based on the coupling structure. Additionally, different temperature resistance grades (such as SH and UH) and protective coatings (nickel plating, epoxy, etc.) can be chosen according to operating conditions to ensure long-term stable operation of the magnets in high-temperature, humid, or corrosive environments.
Other commonly used 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....