Automotive grade Permanent Nickel plating compact design Ring Shaped NdFeB magnets
1. Product Overview
The automotive grade Permanent heat resistant stableNickel plating compact design Ring Shaped NdFeB magnet is a high-performance permanent magnet featuring a Round disc design for secure mechanical fastening. The automotive grade Permanent high adhesive force Nickel plating compact design Ring Shaped NdFeB magnet is manufactured using high-grade NdFeB material (e.g., N35–N52) and coated with triple-layer nickel plating (Ni-Cu-Ni), significantly improving corrosion resistance and surface durability. It is ideal for applications requiring both strong magnetic performance and robust mechanical mounting.
2. Technical Parameters:
Product Data Level | Description |
Product Name | Automotive grade Permanent Nickel plating compact design Ring Shaped NdFeB magnets |
Magnet Grade | N42 (Br ≥ 13.2 KGs, Hcj ≥ 10.8 KOe) |
Dimensions |  D6x 3x1.5
|
Dimensional Tolerances | Length ±0.05mm, Width ±0.05mm, Thickness ±0.05mm |
Working Temperature | ≤ 80°C (custom high-temperature versions available) |
Surface Magnetic Field | 2400 Gauss (measured with TM-801 Gauss meter, Japan) |
Magnetic Flux | 1.8 mWb (measured with fluxmeter) |
3. Manufacturing Process
Magnetization Process:
Professional pulse magnetization equipment is used to inject strong and stable magnetic fields, ensuring the magnet meets design specifications and performs reliably under high load or high-frequency operation.
Grinding & Fine Finishing:
Advanced precision equipment grinds the magnet surface to ensure smoothness and tight dimensional tolerances, supporting high-precision industrial applications
4. Surface Treatment & Plating Technologies
Zinc Coating:
Offers enhanced chemical resistance and waterproofing, especially suitable for humid environments.
Triple Nickel Plating:
Ni-Cu-Ni electroplating dramatically enhances corrosion resistance and mechanical durability.
5. Appearance & Dimensional Inspection Standards
Manual Inspection with Micrometer/Caliper:
Ensures dimensional accuracy per design specification.
Visual Inspection:
Performed under standard lighting to detect cracks, surface defects, or imperfections.
2D Optical Measurement System:
Used for irregular or complex-shaped parts to verify geometric and dimensional accuracy
Magnetic Flux Testing:
Ensures consistent magnetic strength across each production batch.
6. Reliability Testing
Drop and Vibration Testing:
Simulates transportation and operational impact to verify product reliability in end-use conditions.
High-Temperature Demagnetization Test:
Confirms thermal stability by measuring magnetism retention under high temperatures.
Damp Heat Test:
Evaluates resistance to corrosion and humidity in moisture-rich environments.
7. Packaging & Transportation
Defect Sorting:
Visual and dimensional defects are removed before final packing
Magnetizing & Arranging:
Each magnet is uniformly magnetized and packed as per customer requirements.
Vacuum Packaging:
Prevents moisture and magnetic interference during shipping and storage.
Outer Packaging:
Shock-resistant, moisture-proof, and anti-magnetic interference packaging ensures safe transportation.
. Application Fields
² Consumer Electronics:
In Bluetooth speakers, earbuds, and microphones for sound generation
Inside smartphones, especially in vibration motors and closures.
Motors and Sensors:
Used in rotor-stator assemblies in miniature motors and BLDC (Brushless DC) motors. Integrated into speed or position sensors (e.g., hall effect sensors).
9. Usage Precautions
Handling:
NdFeB magnets are hard yet brittle—avoid dropping, collision, or edge impact.
Safe Operation:
Strong magnetic force may cause pinching—slide magnets apart instead of forcing them.
Proper Installation:
Identify and align polarities correctly to ensure stable operation.
Storage Conditions:
Avoid high temperatures, humidity, and corrosive (acid/alkali) environments.
Magnetic Interference:
Keep magnets away from sensitive equipment like hard drives, IC cards, and pacemakers.
10. Customization & Services
Customized dimensions, shapes, coating layers/thickness/color
Magnetic polarity and force specification
Laser engraving for logos or serial numbers
Encapsulation solutions and pull-force testing for specialized applications
If you require samples, technical datasheets, or certifications such as MSDS, RoHS, ISO 9001, QC080000, IATF 16949, ISO 14001, or ISO 27001, our sales engineers are ready to assist you.
Contact Us:
Phone: +86 18038225892
Email: helen@jinconn.com
Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong Province, China
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