Product Introduction and Application fields
1.1 Product Introduction
Precision customized strong magnetic force black epoxy coated tile magnet is engineered for high-efficiency motors and precision-driven systems. Manufactured from premium-grade rare-earth materials, heat resistance strong magnetic force black epoxy coated stable small arc segment neodymium magnet delivers exceptional magnetic energy density (up to 52 MGOe) with excellent thermal stability and corrosion resistance. The black epoxy coating ensures long-term durability, even in humid or salt-spray-prone environments. Common applications include BLDC motors, servo motors, wind turbines, EV drive systems, and industrial automation.
1.2 Application fields
Motor and Generator Applications
High magnetic strength black epoxy coating high torque tile neodymium magnet is designed to closely fit the inner wall of the stator, enhancing magnetic field strength and improving motor efficiency. Its coating provides excellent corrosion resistance, making it ideal for high-humidity and salt-spray environments, ensuring long-term stable operation.

Home Appliance Applications
Widely used in motor systems of washing machines, air conditioners, and vacuum cleaners, this magnet helps improve energy efficiency (e.g., achieving China's Level 1 energy rating) while ensuring long-term reliability and low maintenance under high-temperature and humid conditions.

Technical Specifications
|
Product Name |
black epoxy coating tile magnet |
|
Magnet Grade |
N48 (Br ≥ 14.8 KGs, Hcj ≥ 10.5 KOe) - Customized |
|
Dimensions |
D8-D10×4 mm |
|
Tolerance |
±0.05 mm (Length, Width, Thickness) |
|
Operating Temperature |
≤ 80°C (Customized high-temp versions available) |
|
Density |
≥7.5 g/cm³ |
|
Surface Magnetic Field |
2400 Gauss (Measured using Japan TM-801 Gauss meter) |
|
Magnetic Flux |
2.2 mWb (Measured; value varies by material grade) |
Surface Treatment & Coating Technology
- High-Precision Bonding: The use of flexible epoxy adhesive enhances the bonding strength of the magnets.
-In-line Magnetic Field Compensation: During the assembly process, the magnetic field is measured in real time, and positional adjustments of the magnetic segments are made to compensate for deviations

Appearance and Dimensional Inspection
4.1 Appearance Inspection
Each magnet is visually inspected to ensure the surface is free from cracks, chips, edge breakage, and visible structural defects.
Surface coatings are checked for continuity, uniformity, and adhesion, with no peeling, blistering, pinholes, or exposed base material.
Corners, chamfers, and edges are examined to confirm they meet design requirements and reduce the risk of damage during handling or assembly.
Surface cleanliness is verified to ensure no oil residue, dust, or foreign contamination is present.

4.2 Dimensional Inspection
Critical dimensions such as length, width, thickness, diameter, or slot features are measured using calibrated measuring instruments.
Dimensional tolerances are verified against approved drawings and technical specifications.
Flatness, parallelism, and perpendicularity are inspected where required to ensure proper fit and alignment in assemblies.
Measurements are performed according to defined inspection plans to ensure batch consistency.

Packaging & Transportation
- Magnets are packed with spacers and reinforced cushioning
- Anti-corrosion packaging maintains coating integrity
- Magnetic shielding controls stray magnetic fields during transport
- Packaging is designed for safe long-distance and bulk shipment

FAQ
Q. Why choose epoxy coating for magnets?
Corrosion Resistance: Epoxy coating isolates the magnet from moisture, air, and salt spray-ideal for harsh environments like coastal areas or high humidity zones.
High Temperature Tolerance: Epoxy coatings typically withstand up to 200–380 °C depending on the formula and thickness.
Q.What is the typical thickness and color of the coating?
Thickness: Usually ranges from 10 to 30 μm.
Color: Standard is black, but custom colors like gray, red, or green are available for identification or aesthetic purposes.
Q.How does it compare to nickel or zinc coatings?
Epoxy is lighter, non-metallic, and chemically resistant.
Unlike Ni-Cu-Ni or Zn plating, it's non-conductive, ideal for applications where magnetic isolation and low eddy current loss are important.
Contact Us
Phone/WhatsApp/WeChat: +86 13829120676
Email: Info@jinconn.com
Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong Province, China
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