Product Overview & Application examples
Strong stability cylindrical magnets for Industrial. Such as brush less DC motors (BLDC), wind turbine rotors, and high-torque industrial motors. The magnet features an arc structure and can be customized in terms of curvature, thickness, inner/outer diameter, and magnetization direction. With optimized arc geometry and precision orientation magnetization, it provides stable and uniform magnetic flux output, ensuring excellent performance even under high-speed rotation or heavy-load conditions with strong stability cylindrical magnets
Technical Parameters
|
Product Name |
Strong stability cylindrical magnets |
|
Magnet Grade |
N42 (Br ≥ 14.3 KGs, Hcj ≥ 10.8KOe) |
|
Dimensions |
Customize |
|
Tolerance |
±0.05 mm in length, width, and thickness |
|
Working Temperature |
≤ 80°C (custom high-temperature versions available) |
|
Density |
≥ 7.5 g/cm³ |
|
Surface Magnetic Field |
3000 ± 200 Gauss (measured with TM-801 Gauss meter, Japan |
|
Magnetic Flux |
1.8 mWb (measured with fluxmeter) |
Reliability and testing system
To ensure stable performance and consistent quality, a comprehensive reliability and testing system is implemented throughout production.
Inspection & Control Scope:
Incoming inspection: chemical composition and magnetic properties
In-process control: monitoring and sampling at critical steps
Pre-shipment inspection:
Magnetic property testing (Br / Hcj / (BH)max)
Dimensional and visual inspection
Coating adhesion testing
Salt spray test (as required)
Available Documentation:
Magnetic performance test report
Dimensional inspection report
Coating and salt spray test report (upon request)
Quality Control & Inspection
Quality consistency and full traceability are maintained throughout the manufacturing process.
- Magnetic properties are measured using calibrated equipment, including Helmholtz coils and flux meters, to ensure compliance with specified performance ranges.
- Functional testing, such as pull-force and holding force verification, is performed where applicable.
- Dimensional accuracy, surface condition, and coating integrity are inspected at multiple stages of production
- Batch traceability is ensured through documented records and laser marking.
- The quality management system is implemented in accordance with ISO and IATF requirements.
Safety, Packaging & Transportation
Standardized packaging procedures and safety guidelines are applied to ensure safe handling, transportation, and stable performance of NdFeB magnets.
Safety & Handling Guidelines:
- Strong magnetic force-keep hands clear to prevent pinching injuries
- Brittle material-avoid impact, dropping, or excessive mechanical stress
- Protective gloves are recommended during handling
- Keep away from electronic devices, magnetic storage media, and pacemakers
- Avoid high temperatures or strong reverse magnetic fields to prevent demagnetization
Packaging & Transportation:
Individual or layered separation to prevent magnetic attraction and collision
Shock-proof and moisture-resistant inner packaging
Export-compliant outer packaging
Magnetic shielding packaging available for air and international transportation
Customization & Service Capability
We offer flexible customized magnet solutions, covering the entire process from requirement definition to mass production.
Service Scope:
Customization process: requirement review → technical evaluation → sample approval → mass production
01
Minimum order quantity (MOQ): determined by product specifications and process requirements
02
Sampling lead time: typically 7–15 days
03
Mass production lead time: typically 20–30 days, depending on order volume and complexity
04
Technical support: magnet selection guidance and application support
05
FAQ
Q1. How do I choose between high Br and high Hcj grades for my application?
High Br grades are suitable when space is limited and maximum magnetic output is required, but they are more sensitive to demagnetization. High Hcj grades should be selected when the magnet is exposed to elevated temperatures, reverse magnetic fields, or harsh working conditions, even if this means slightly lower magnetic strength.
Q2. What is the practical difference between SH, UH, EH, and AH grades in real use?
The difference lies mainly in coercivity and temperature stability. SH grades are typically suitable up to ~150 °C, UH to ~180 °C, EH to ~200 °C, and AH to ~230 °C. However, real-world safety margins usually require operating at least 20–30 °C below these limits.
Q3. Can a higher-grade magnet replace a larger magnet volume?
To a certain extent, yes. Increasing BHmax can allow volume reduction, but magnetic circuit design, saturation of surrounding steel, and thermal limits often become the bottleneck before theoretical performance gains are fully realized.
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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