What is an N52 arc magnets?

Magnetic materials play a crucial role in modern industry and high-tech fields. Among them, neodymium iron boron (NdFeB) magnets are highly favored for their superior magnetic properties. And when it comes to high performance and special shapes, N52 arc magnets are undoubtedly a leader.

What is the "N52" grade?

"N52" is a grade of neodymium iron boron (NdFeB) permanent magnet material. It is one of the highest energy product grades among commercially available high-performance magnets.

Magnetic energy product is the most important indicator of magnet performance; it represents the maximum work a magnet can do. The energy product of an N52 grade magnet typically ranges from $49.5 to $52.5 MGOe (mega-Oersted). This indicates that N52 magnets possess extremely high magnetic force, making them ideal for applications requiring strong and sustained magnetic fields.

The Mystery of Shape: Design and Application of Arc Magnets

Arc magnets (also known as tile magnets or sector magnets) are a common type of irregularly shaped magnet among neodymium iron boron (NdFeB) magnets. Their shape is part of a circular ring, with an arc or sector-shaped cross-section, typically possessing a certain curvature. This unique shape design gives them irreplaceable advantages in the following applications:

Electric Motors and Motors: The primary application of N52 arc magnets is in various permanent magnet motors. For example, servo motors, wind turbines, and electric vehicle drive motors. Arranging arc magnets circumferentially on the rotor or stator effectively creates radial or tangential magnetic fields, providing efficient and stable power to the motor.

Sensors and Actuators: They are also commonly used in equipment requiring precise magnetic field control.

Due to the high magnetic strength of N52 and its unique arc-shaped structure, this high-performance rare-earth magnet maximizes the utilization of magnetic field space, improving the efficiency and power density of the equipment.

Quality and Selection: Factors to Consider When Choosing N52 Arc Magnets

When selecting and customizing N52 arc magnets, in addition to the energy product (N52), the following key factors need to be considered:

Temperature Resistance (Operating Temperature): The performance of neodymium iron boron magnets decreases as temperature increases. N52 grade magnets typically have different temperature resistance series (e.g., N52, N52M, N52H, etc.), with the letter representing the maximum operating temperature. For example, motors used in high-temperature environments may require N52H or a higher temperature resistance grade.

Dimensional Tolerances: The accuracy of the curvature, length, width, and height of the arc magnet is crucial for motor assembly.

Surface Treatment (Platinum): Neodymium iron boron materials are susceptible to corrosion, therefore surface treatments such as nickel (Ni), zinc (Zn), or epoxy resin plating are required to protect the magnets.

N52 arc magnets are strong magnetic products that combine high energy product and a special geometric structure. With its powerful performance and precise shape, it has become one of the core rare-earth permanent magnet components driving the development of modern permanent magnet motors and other high-end technological equipment. As technology advances, the demand for this high-performance magnet will continue to grow.