Product Overview
High adhesive force tile magnets are precision-engineered NdFeB components specifically designed for permanent magnet motor and generator applications. Manufactured with controlled magnetic orientation and tight dimensional tolerances, these arc-shaped magnets ensure optimal air-gap flux distribution and strong bonding performance when assembled onto rotors or stators.
Material Neodymium (NdFeB)
|
Product Name |
high adhesive force tile magnets |
|
Magnetic Grade |
N42 (Br ≥ 13.5 kGs, Hcj ≥ 12 kOe) |
|
Thickness |
D 8mm x 3mm |
|
Dimensional Tolerance |
Length ±0.05mm, Width ±0.05mm, Thickness ±0.05mm |
|
Magnetisation Direction |
Axially Magnetised |
|
Operating Temperature |
≤80°C (high-temp version available) |
|
Density |
≥7.5 g/cm³ |
|
Surface Magnetic Field |
3800 ±200 Gauss (measured with TM-801 Gauss meter) |
|
Magnetic Flux |
2.3 mWb (measured with fluxmeter) |
Key Magnetic Parameters
Br (Remanence)
Determines the magnetic flux output of the magnet. Higher Br enables higher torque in motors and higher sound pressure in speakers within the same volume.
Hcj (Intrinsic Coercivity)
Defines the magnet's resistance to demagnetization. This parameter is critical for high-temperature operation and environments with strong reverse magnetic fields.
(BH)max (Maximum Energy Product)
Indicates the maximum usable magnetic energy per unit volume and directly impacts system miniaturization and power density.
2.2 Thermal Behavior and Long-Term Stability
▲ Operating Temperature vs. Maximum Tolerance
The operating temperature refers to the temperature at which the magnet can function continuously without irreversible demagnetization. The maximum tolerance temperature is a short-term limit and should not be used for long-term design.
▲ Temperature Coefficient
NdFeB magnets exhibit a reversible loss of remanence as temperature increases, typically:
- -0.10% to -0.12% per °C
- This effect can be mitigated through grade selection, magnetic circuit optimization, or design safety margins.
▲ Magnetic Aging (Time Decay)
Under proper design and stable operating conditions, the annual magnetic decay rate is typically less than 1%. Elevated temperature and reverse magnetic fields are the primary risk factors.
Packaging Process
Magnets are inspected and cleaned prior to packaging
01
Non-magnetic spacers prevent contact and magnetic impact
02
Moisture-barrier materials protect coatings during storage and transit
03
Shock-absorbing inner packaging minimizes mechanical stress
04
Customization & Value-Added Services
Flexible Magnet Design:
Custom dimensions, geometries, and surface finishes, including coating structure, thickness, and color options.
Optimized Magnetization Solutions:
Magnetization direction and magnetic output tailored to specific application requirements.
Permanent Marking Services:
Precision laser engraving for logos, part numbers, or traceability codes.
Application-Specific Validation:
Specialized packaging solutions and pull-force testing to ensure performance in demanding use cases.
◆ Please contact us for free samples, magnet customization solutions, and MSDSRoHS, ISO 9001, QC080000, IATF 16949, ISO 14001, ISO 27001 or other relevant certificates!
FAQ
Q1. How critical is edge and corner quality for corrosion resistance?
Extremely critical. Most corrosion failures initiate at sharp edges or chipped corners where coating coverage is weakest.
Q2. Why does epoxy coating sometimes peel after assembly?
Peeling is often caused by press-fit stress, poor surface pretreatment, or thermal expansion mismatch between epoxy and the NdFeB substrate.
Q3. Can coating performance vary significantly between suppliers even with the same coating type?
Yes. Surface preparation, plating bath control, curing conditions, and thickness uniformity have a major impact on real performance.
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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