Product Overview & Application Fields
These round countersunk NdFeB magnets are engineered to provide high holding stability, precise positioning, and secure mechanical fixation in applications where compact size and reliable mounting are required.
- The countersunk hole design enables flush screw mounting, ensuring stable installation, accurate positioning, and resistance to vibration or displacement
- Optimized magnetic circuit and geometry deliver high holding force in a compact form, supporting space-constrained assemblies
- Excellent magnetic stability and repeatability make the magnets suitable for precision fixtures, tooling aids, and small-component positioning
- In industrial and engineering environments, they are widely used for temporary or semi-permanent fastening, alignment, and modular assembly
- In energy-related applications, including renewable energy devices, their stable magnetic performance supports reliable operation under continuous load conditions
By combining strong magnetic performance, secure mechanical integration, and dimensional precision, these round countersunk magnets offer a dependable and application-focused solution for both professional engineering use and high-quality consumer applications.
Technical Parameters
|
Product Name |
strong stability round countersunk magnets |
|
Magnetic Grade |
N42 (Br ≥ 13.5 kGs, Hcj ≥ 12 kOe) |
|
Dimensions |
D - 15mm x 4mm (customizable) |
|
Dimensional Tolerance |
Length ±0.05mm, Width ±0.05mm, Thickness ±0.05mm |
|
Operating Temperature |
≤80°C (high-temp version available) |
|
Density |
≥7.5 g/cm³ |
|
Surface Magnetic Field |
2450 ±200 Gauss (measured with TM-801 Gauss meter) |
|
Magnetic Flux |
2.3 mWb (measured with fluxmeter) |
Reliability Testing
Magnetic Stability & Flux Loss Test
Magnetic flux and key magnetic parameters are measured before and after environmental and mechanical testing. Any changes in magnetic performance are recorded to confirm long-term magnetic stability and minimal flux loss under specified operating conditions.
Visual, Dimensional & Functional Inspection
Following all reliability tests, comprehensive inspections are performed, including visual examination, dimensional verification, and functional checks, to ensure the products continue to meet specified quality and performance requirements.
Packaging & Transportation
Magnets are inspected before packaging to ensure correct dimensions, coating quality, and magnetic performance.
Individual magnets or layers are separated using non-magnetic materials to prevent collision, chipping, and surface damage.
Inner packaging includes cushioning and magnetic isolation to reduce vibration and magnetic interaction.
Outer packaging uses reinforced cartons or wooden cases according to weight and transportation requirements.
Clear labels and handling instructions are applied, with magnetic shielding added when required for shipment compliance.
Custom Solutions & After-Sales Service
Customization Services
- Magnet design support based on customer drawings or application needs
- Optimization of magnetic strength, coercivity, and operating temperature
- Custom coatings and packaging solutions
- Batch traceability and labeling options
After-Sales Service
- Prompt response to customer feedback and inquiries
- Technical consultation for installation and application issues
- Quality issue handling with structured investigation and improvement measures
- Long-term technical cooperation and continuous improvement support
FAQ
Q1. When is it necessary to use heavy rare earth diffusion (HRED) magnets?
HRED is recommended when high temperature resistance and demagnetization stability are required without significantly reducing magnetic output.
Q2. How does coating thickness influence assembly and performance?
Excessive coating thickness can affect fit tolerance and air gaps, while insufficient coating increases corrosion risk. Proper balance is essential.
Q3. What causes magnets to attract metal debris during operation?
Strong stray fields and open magnetic circuits can attract ferrous particles, which may cause wear, noise, or sensor interference if not properly shielded.
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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