Neodymium Iron Boron ring high-strength magnet is a ring-shaped sintered NdFeB permanent magnet processed by precision cutting, drilling and grinding based on high-performance NdFeB magnetic blanks. As a core high-strength magnetic component in the NdFeB magnet series, it has the characteristics of ultra-high magnetic energy product, strong magnetic adsorption force, concentrated magnetic field and stable magnetic performance, and is one of the most widely used special-shaped magnets in industrial precision equipment, electronic motors and mechanical transmission fields. The ring structure is designed with a hollow inner hole and circular outer circle, which can be sleeved on rotating shafts, fixed columns and other components, realizing coaxial positioning, magnetic transmission and magnetic induction functions. The product adopts high-purity neodymium, iron and boron raw materials, through vacuum melting, powder making, orientation pressing, high-temperature sintering and tempering treatment, which ensures the internal crystal structure of the magnet is dense and uniform, with no internal cracks, pores and impurities, and the magnetic performance reaches the national standard and international industrial high standard.

In terms of performance advantages, neodymium iron boron ring high-strength magnets have ultra-high magnetic properties. The conventional magnetic grade ranges from N35 to N55, and high-temperature resistant grades such as M, H, SH, UH can be customized, with a maximum magnetic energy product of up to 55 MGOe. The magnetic field of the ring magnet is concentrated and uniform, the axial and radial magnetic force distribution is regular, and the magnetic attenuation is extremely slow, with permanent magnetism basically no attenuation in normal temperature use environment. Compared with block and sheet NdFeB magnets, the ring structure has better stress uniformity, can withstand uniform axial and radial pressure, and is not easy to deform and crack during high-speed rotation and mechanical assembly. The product has high dimensional accuracy, after precision grinding and fine boring, the outer circle tolerance can reach ±0.02mm, the inner hole tolerance is controlled within ±0.01mm, and the perpendicularity and flatness are excellent, fully meeting the high-precision assembly and rotation matching requirements of precision mechanical equipment.

The structural diversity of neodymium iron boron ring high-strength magnets is extremely rich, supporting personalized customization of various specifications. It can be processed into thin-walled rings, thick-walled rings, large-diameter rings, micro-small rings, step rings, grooved rings and other special structures according to customer needs. The outer diameter ranges from 2mm to 500mm, the inner diameter ranges from 1mm to 480mm, and the thickness is adjustable from 1mm to 100mm, which can adapt to the size requirements of different equipment components. In terms of surface treatment, conventional electroplating nickel, zinc plating, epoxy resin coating, passivation and other processes are available, which can effectively improve the corrosion resistance, rust resistance and wear resistance of the magnet, and extend the service life in harsh working environments such as high humidity, high salt fog and industrial corrosion. The high-strength characteristics of the product make it have super strong magnetic adsorption force, a small-sized ring magnet can bear several times or even dozens of times of its own weight of adsorption force, realizing lightweight and high-efficiency magnetic transmission and fixing.

Neodymium iron boron ring high-strength magnets are mainly used in high-precision industrial and electronic fields. In the motor industry, they are core components of permanent magnet synchronous motors, brushless DC motors, stepping motors and miniature vibration motors, providing stable magnetic field power for motor rotation, improving motor efficiency and reducing energy consumption. In the mechanical transmission field, they are used for magnetic coupling, magnetic transmission shaft, magnetic brake and magnetic clutch components, realizing non-contact transmission and avoiding mechanical friction loss. In the electronic sensor industry, they serve as magnetic induction cores of hall sensors, speed sensors, position sensors and displacement sensors, providing stable magnetic field sources for precise signal induction. In the medical equipment field, they are applied to magnetic resonance equipment auxiliary components, medical precision instrument positioning parts and rehabilitation equipment magnetic components. In addition, they are also widely used in aerospace precision equipment, automobile electronic systems, automation equipment, precision instruments and meters, and high-end audio equipment. With the rapid development of intelligent manufacturing and high-precision electronic equipment, the market demand for high-precision and high-strength NdFeB ring magnets is continuously growing, and they have become an indispensable core component of modern high-end manufacturing industry.