Product Overview
This precision- engineered zinc coated magnet with N52 grade, featuring extremely high magnetic strength, excellent demagnetization resistance, and precise dimensional accuracy. The product's precision can be customized according to customer requirements. Its sophisticated ring-shaped design meets high-performance magnetic needs in compact spaces, making it widely applicable in high-end electronic devices, audio equipment, premium perfume bottle caps, and other fields.
The zinc coated tile magnet is manufactured using advanced wire cutting, center-less grinding, and double-disc grinding processes, ensuring neat edges and uniform dimensions. Surface treatment includes multi-layer metal coating (Ni+Cu+Ni) or optional Zn coating, effectively preventing oxidation and corrosion from environmental factors, thereby extending the product's service life.
These NdFeB arc magnets exceeded our expectations in high-speed motor applications. The strong magnetic force and precision arc shape made assembly seamless, and the epoxy coating provided excellent durability against corrosion. Ideal for our brushless motor production line
Technical Specifications
|
Product Name |
Zinc coated tile magnets |
|
Material Grade |
N52 (Br ≥ 14.2 kGs, Hcj ≥ 12 kOe) |
|
Dimension |
D20-D14×6 mm (R3) |
|
Dimensional Tolerance |
±0.05 mm (length/width/thickness) |
|
Operating Temperature |
≤80℃ (high-temperature versions customizable) |
|
Density |
≥7.5 g/cm³ |
|
Surface Magnetic Field |
3200 ± 200 Gauss (measured with Japanese TM-801 Gauss meter) |
|
Magnetic Flux Value |
2.3 mWb (measured with fluxmeter) |
Magnetization & Field Design
NdFeB magnets can be magnetized using axial, radial, multi-pole, or orientation-specific magnetization methods, depending on application requirements. Selecting an appropriate magnetization pattern is critical for optimizing magnetic field distribution, maximizing effective magnetic flux utilization, and improving overall system efficiency.
For applications with strict requirements on magnetic field directionality or uniformity, customized magnetization and magnetic circuit design can be implemented. Through controlled magnetization processes and optimized magnetic path layouts, magnetic output can be precisely tailored to meet functional and performance targets, ensuring stable and efficient operation in demanding systems.
Geometry Design & Machining Capability
NdFeB magnets feature high hardness and brittleness, which place stringent demands on machining processes and equipment. With advanced cutting, grinding, and shaping technologies, a wide range of geometries can be reliably produced, including thin plates, long bars, rings, and complex custom shapes.
Strict dimensional tolerance control is maintained throughout the machining process to ensure accurate fit and alignment during assembly. This level of geometric precision enhances system stability and performance consistency, making NdFeB magnets suitable for high-precision and high-reliability applications.
Packaging Process and Instructions
In compliance with magnetic product transportation requirements, we implement professional packaging methods:
- Defective items in appearance and dimensions are removed.
- Qualified products are uniformly magnetized and neatly arranged.
- Customized box quantities and labels per customer requirements.
- Each box is vacuum-packed with magnetic shielding plates and shock-absorbing pads.
- Small boxes are packed into master cartons with moisture, impact, and magnetic interference protection.
Packaging methods can be customized.
Shipping
6.1 Shipping Challenges with NdFeB Magnets
Due to their strong magnetic field, shipping neodymium magnets-especially in bulk or large sizes-requires special care. Key challenges include:
Magnetic Interference
Strong fields can interfere with aircraft instruments, especially if not properly shielded.
International Air Transport Association (IATA) imposes strict regulations for air freight.
Fragility
NdFeB magnets are brittle and prone to chipping, especially during vibration or collision in transit.
6.2 Shipping Options
Air Freight
- Fastest method; ideal for urgent or high-value orders.
- Shielding required to comply with IATA PI902 standards:
- Magnetic field strength must not exceed 0.159 A/m (200 nT) at 4.6 m (15 ft) from the package
- Typically done with iron/steel sheets or custom shielding enclosures.
Sea Freight
- Ideal for large quantities or heavy items (e.g., >100 kg).
- More cost-effective, but slower.
- No magnetic shielding requirement for ship cargo, but moisture control (e.g., VCI bags, desiccant) is essential.
Ground/Express Courier (DHL, UPS, FedEx)
- Good for small and medium volumes.
- Couriers may require magnetic declaration and limited field strength-shielding still needed for high-grade magnets
6.3 Documents & Labeling Requirements
Required Documentation:
Commercial Invoice
Packing List
Magnetic Field Test Report (especially for air shipments)
Shipper's Declaration for Dangerous Goods (if applicable)
MSDS (Material Safety Data Sheet)
Customization and Services
We support various customization services:
● Size, shape, and coating (layer count, thickness, color) customization.
● Polarity direction and magnetic strength adjustment.
● Laser-engraved logos or serial numbers.
● Special application packaging solutions and pull-force testing support.
If you need any solution for your mobile, speaker or robotics project technical data sheet,please feel free to contact our sales engineers, we are always ready to assist you!
Please contact us for free samples, magnet customization solutions, and MSDSRoHS, ISO 9001, QC080000, IATF 16949, ISO 14001, ISO 27001 or other relevant certificates!
We're here to help!
Phone/WhatsApp/WeChat: +86 13829120676
Email: info@jinconn.com
Website: www.jinconnmagnet.com
Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong, China
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