Countersunk ring Epoxy Coated Magnet  is  often made from neodymium (NdFeB) and coated with an epoxy layer for enhanced corrosion resistance and durability. Here are the common technical parameters for these magnets:

1. Material: Neodymium-Iron-Boron (NdFeB)
2. Coating: Epoxy resin (typically 10-20 micrometers thick)
3. Shape: Ring
4. Dimensions:
-Outer Diameter (OD): Varies (e.g., 10 mm to 100 mm)
– Inner Diameter (ID): Varies (e.g., 5 mm to 90 mm)
– Thickness: Varies (e.g., 1 mm to 10 mm)
5. Magnet Grade: Common grades include N35, N42, N45, N50, N52, with higher numbers indicating stronger magnets.
6. Magnetic Properties:

– Remanence (Br): 1.1 to 1.5 Tesla
– Coercivity (Hcb): 836 to 923 kA/m
– Intrinsic Coercivity (Hcj): 955 to 2000 kA/m
– Maximum Energy Product (BHmax): 280 to 422 kJ/m³

7. Operating Temperature: Maximum operating temperatures typically range from 80°C to 200°C depending on the magnet grade.

8. Density: Approximately 7.5 g/cm
9. Magnetic Pole Orientation: Axially or radially magnetized (with poles on the circular faces or around the circumference)
10. Tensile Strength: Varies based on specific material composition, typically low in NdFeB magnets
11. Compressive Strength: Also varies, generally higher than tensile strength

 Additional Parameters Specific to Countersunk ring Epoxy Coated Magnet.
1. Corrosion Resistance: Epoxy coating provides good resistance to moisture and chemicals.
2. Adhesion Strength: Ensures the coating stays intact during handling and use.
3. Hardness: The epoxy coating adds a protective layer that resists scratches and minor impacts.

 Applications：
Countersunk ring Epoxy Coated Magnets are used in various applications due to their unique shape and protective coating:

1. Motors and Generators: Used in the rotors and stators of electric motors and generators.
2. Sensors: Employed in magnetic sensors, including Hall effect sensors.
3. Medical Devices: Used in medical equipment requiring strong, reliable magnets with corrosion resistance.
4. Automotive: Utilized in various components of electric and hybrid vehicles, including sensors and motors.
5. Industrial Applications: Applied in magnetic bearings, couplings, and other mechanical assemblies where corrosion resistance is important.
6. Consumer Electronics: Used in speakers, headphones, and other audio equipment.
7. Renewable Energy: Utilized in wind turbine generators and other energy harvesting devices.

Countersunk ring Epoxy Coated Magnet is a type of coating made from epoxy resin and a curing agent. Epoxy coatings are widely used for industrial and commercial applications because of their excellent chemical resistance, durability, and toughness. They are also used as protective coatings for metal surfaces, such as magnets, to provide corrosion resistance. Epoxy coatings bond well to metal surfaces and form a hard, durable barrier that can withstand a wide range of chemicals and environmental conditions. They also have excellent adhesion properties, which means they can effectively protect metal surfaces from corrosive substances without peeling or cracking over time. Epoxy is a cost-effective corrosion protection solution as it protects a surface for a longer time period, as compared to other corrosion protection techniques.