NEODYMIUM ARC MAGNETS
High Performance Segment Magnets
Neodymium arc magnets have an irreplaceable advantage in motor applications because of their unique, curved shape. They provide a strong and stable magnetic field in the rotation system, and such special size and shape make them indispensable in applications that require high precision.
Arc Magnets in Standard Sizes & Custom Options
The size of neodymium arc magnets defines the fields and devices they can serve. The big ones are used in motors and wind turbines, while the smaller ones are used in robotics, precision instruments, and sensors. The curvature and size of these magnets define the precise distribution of the magnetic field in rotating systems, ensuring optimal interaction between the magnetic field and the operational components.
Sizing is critical to ensuring the magnet fits correctly in the system, resulting in maximum magnetic field strength and functional precision.
- The radian ranges typically from 22.50 mm to 29.00 mm (0.89″ to 1.14″).
- The second radian ranges from 10.00 mm to 17.50 mm (0.39″ to 0.69″).
- The height ranges from 15.00 mm to 30.00 mm (0.59″ to 1.18″).
- The angle ranges from 60.00 mm to 90.00 mm (2.36″ to 3.54″).
During customization, we ensure that each magnet’s dimensions are exact and give rigorous tolerance limits. The specific tolerances are:
Diameter tolerances range from
- 1.00 mm to 25.00 mm (0.04″ to 1.00″), tolerance is ±0.10 mm (±0.004″)
- 25.00 mm to 50.00 mm (1.00″ to 2.00″), tolerance is ±0.20 mm (±0.008″)
- 50.00 mm to 75.00 mm (2.00″ to 3.00″), tolerance is ±0.30 mm (±0.012″)
- 75.00 mm to 90.00 mm (3.00″ to 3.54″), tolerance is ±0.40 mm (±0.016″)
- Thickness tolerance: ±0.10 mm applies to all sizes.
These tolerances and dimensions may be adjusted based on a specific application’s operating environment and design requirements.
Magnetization Pattern and Direction
Neodymium arc magnets have a distinctive curved structure, necessitating particular magnetisation processes to ensure optimal magnetic field efficiency. Since arc magnets are often used in spinning devices, the distribution and direction of the magnetic field are crucial. Here are some standard magnetisation methods:
Magnetized thru Circumference
Magnetising throughout the perimeter of the neodymium arc magnet helps to distribute the magnetic field equally over the surface’s curve. In this manner, in the event of spinning systems, the magnetic field provides constant strength in all directions, making it suitable for applications involving motors and other systems that need steady magnetic fields.
Magnetized thru Thickness
Magnetising through thickness indicates that the magnetic field permeates the whole thickness of the neodymium arc magnet. This magnetisation is ideal for excellent power applications like high-power motors and wind turbines.
Magnetized North Outer Face
This magnetisation method sets the north pole on the magnet’s outer surface and is often favoured when the orientation of the magnetic pole is critical, for example. In spinning applications, this helps to place the magnetic field correctly.
Magnetized South Outer Face
Unlike north-pole magnetisation, this approach positions the south pole on the magnet’s outer surface. It is utilised in applications that need the direction of the magnetic field near the south pole, such as directional magnetic field control and precision instrumentation.
Magnetized thru Circumference
Magnetized thru Thickness
Magnetized North Outer Face
Magnetized South Outer Face
Arc Magnet Features & Characteristics
- What are neodymium arc magnets? Neodymium Arc Magnets are manufactured from a combination of neodymium, iron, and boron. They are arc-shaped and typically seen in motors and generators.
- Why are arc-shaped neodymium magnets used in motors? Arc-shaped neodymium magnets may increase magnetic flux efficiency and are ideal for use with rotors and stators to enhance motor performance.
- How Does the Arc Shape Affect Magnetic Fields? Arc-shaped magnets generate a circular magnetic field, making them useful for applications such as motors and generators.
- Are Neodymium Arc Magnets Capable of Magnetic Coupling? Yes, arc-shaped neodymium magnets can effectively transfer torque and are often employed in magnetic coupling systems.
- How are neodymium arc magnets manufactured? Sintering at high temperatures, then cutting into arcs and magnetising using precise equipment.
- What Are Some Common Applications for Neodymium Arc Magnets? Used mostly in motors, generators, magnetic resonance imaging (MRI), speakers, and other equipment.
- What are the various grades of Neodymium Arc Magnets? Neodymium arc magnets come in a variety of magnetic strength classes, including N35 and N52. The greater the magnetic strength, the broader the use.
- How Do I Handle Neodymium Arc Magnets? Handle with caution, avoid forceful impacts, use protective gloves, and keep away from electrical gadgets.
Arc Magnets in Other Designs
In addition to the Neodymium arc magnets, we provide other arc magnet forms: ferrite, alnico, and Smco arc magnets. Each of these arc magnets harnesses the arc shape for its particular advantages, making these elements suitable for various application needs.
Ferrite arc magnets are a cost-effective alternative for applications with excellent temperature resistance. Ferrite materials, with their high corrosion resistance and low conductivity, are ideal for long-term use in severe settings.
Alnico arc magnets have excellent temperature stability and resistance to demagnetisation, making them ideal for applications that demand high magnetic field stability and accuracy. They generate a homogenous magnetic field and retain a strong magnetic force even at high temperatures, making them ideal for high-stability electronics.
SmCo arc magnets have magnetic characteristics similar to neodymium but are more resistant to temperature and corrosion. Samarium-cobalt magnets can maintain output under very harsh circumstances, making them ideal for high-end technological equipment that must function consistently for an extended period.
