Product Overview & Application Scenarios
Introducing our high quality rare earth magnets especially engineered for micro motors, precision assemblies, and compact magnetic systems. Featuring high magnetic energy density, tight dimensional tolerances, and superior mechanical stability, these rare earth magnets ensure efficient performance in space-constrained applications. Their customized geometry and reliable coating options offer enhanced corrosion resistance and long-term durability, making them ideal for high-speed, high-precision devices.
1.1 Application Scenarios
Micro Motors & Micro Drive Systems
Brushless DC motors (BLDC)
Miniature servo motors
High-speed micro spindles
√ Reason: Compact size with strong magnetic performance enables high torque in miniature systems.
Medical Devices & Instruments
Surgical navigation tools
Magnetic micro-actuators
Drug delivery pumps
√ Reason: Precision shape and high reliability in clean, low-noise environments.
Precision Sensors & Encoders
Angular and linear position sensors
Magnetic Hall effect sensors
Miniature optical encoder magnet rings
√ Reason: Stable magnetic field ideal for signal precision and sensor sensitivity.
Technical Specifications
|
Product Name |
rare earth bar magnets |
|
Magnet Grade |
N52 (Br ≥14.2 kGs, Hcj ≥12 kOe) |
|
Dimension |
L7x5x3mm |
|
Dimensional Tolerance |
+/-0.05 |
|
Operating Temperature |
≤80°C (High-temp versions available) |
|
Density |
≥7.5 g/cm³ |
|
Surface Magnetic Field |
3,500 Gs |
|
Magnetic Flux |
2.0 mWb (Fluxmeter-tested) |
Surface Treatment & Coating Technology
Surface treatment is a critical process for NdFeB magnets due to their inherent sensitivity to oxidation and corrosion.
Coating systems are selected based on application environment, operating temperature, and service life requirements.
Commonly used coatings include Ni–Cu–Ni plating, zinc plating, epoxy coating, phosphate coating, and Parylene.
Plating and coating processes are carried out under controlled parameters to ensure uniform thickness and strong adhesion.
Coating integrity is verified to minimize risks such as pinholes, micro-cracks, peeling, and edge exposure.
Surface treatment is optimized to provide effective protection without adversely affecting dimensional tolerances or magnetic air gaps.
Packaging & Transportation
● Full Quality Control: Only flawless magnets are approved for shipment.
● Standardized Magnetization: Ensures stable output and assembly efficiency.
● Sealed Against Moisture: Packaging blocks humidity and corrosion risks.
● Transit-Ready Protection: Packaging designed for impact resistance and global logistics.
FAQ
Q1. How is magnetic field uniformity evaluated for precision applications?
Magnetic field distribution is analyzed using flux mapping systems or Hall probe scanning to detect local field deviations that could affect performance.
Q2. How is powder particle size distribution verified?
Particle size distribution is verified using laser diffraction analysis to ensure uniform sintering behavior and consistent magnetic performance.
Q3. How is alignment accuracy evaluated in anisotropic NdFeB magnets?
Alignment accuracy is evaluated by comparing theoretical magnetic orientation with actual magnetic field measurements after sintering and magnetization.
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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