Description
Elevate your audio and industrial applications with our high-quality Alnico 5 Large Ring Magnets, specifically engineered for superior performance in loudspeakers and beyond. Measuring an impressive outer diameter of 250mm (D250), inner diameter of 190mm (D190), and height of 150mm, these ring-shaped magnets deliver exceptional magnetic strength and stability, making them a top choice for manufacturers in the electronics, automotive, and audio industries.
Key Features and Specifications
- Material: Alnico 5 (Aluminum-Nickel-Cobalt alloy) – Known for its high remanence (Br up to 1.25 T) and coercivity (Hc up to 60 kA/m), providing reliable magnetic properties in demanding environments.
- Dimensions: Outer Diameter (OD): 250mm | Inner Diameter (ID): 190mm | Thickness/Height: 150mm – Custom sizes available upon request for B2B orders.
- Shape: Ring (Annular) – Ideal for applications requiring a hollow center, such as speaker assemblies, sensors, and magnetic separators.
- Magnetic Properties: Energy product (BHmax) of 4-6 MGOe, with excellent temperature stability up to 550°C, outperforming many ferrite or neodymium alternatives in high-heat scenarios.
- Surface Treatment: Optional coatings like nickel or epoxy for enhanced corrosion resistance; uncoated options for cost efficiency.
- Tolerance: ±0.05mm standard, ensuring precision fit in assembly lines.
- Magnetization: Axial or multi-pole options available to suit your specific needs.






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