N52 Ring Magnets
Maximum strength annular neodymium magnets offering the highest magnetic performance available in commercial-grade ring magnet configurations.
Maximum Energy Product
48-52 MGOe
Premium Grade
Annular Design
Premium Performance N52 Ring Magnets
N52 magnets represent the pinnacle of commercial-grade magnet performance in annular configurations. With a maximum product (BHmax) of 48-52 MGOe, these magnets deliver approximately 15% greater magnetic strength than N45 grade magnets and than N48 grade magnets, making them the optimal choice for applications where maximum magnetic force in minimal space is critical. The N52 designation indicates the highest standard grade available for commercial applications without moving into specialized sintered formulations.
Manufacturing N52 rmagnets requires exceptional precision in material composition, sintering processes, and magnetization techniques to achieve and maintain the maximum theoretical magnetic properties. Our factory specializes in producing these high-performance magnets with consistent quality and reliable performance characteristics. The annular design of N52 magnets combines this exceptional magnetic strength with the mechanical advantages of a through-hole configuration, enabling innovative engineering solutions across demanding applications.
The exceptional performance of N52 magnets makes them particularly valuable in applications where size constraints, weight limitations, or extreme performance requirements preclude the use of lower-grade alternatives. These magnets deliver superior holding force, stronger magnetic fields, and enhanced efficiency in energy conversion applications compared to lower-grade alternatives.
Why N52 Ring Magnets Deliver Unmatched Performance
N52 magnets achieve their exceptional performance through precise control of material composition, advanced sintering techniques, and specialized magnetization processes. With over 30 years of magnet manufacturing expertise, we have perfected the production of N52 grade materials to deliver consistent, reliable performance that meets or exceeds published specifications. Our vertically integrated manufacturing process ensures complete control from raw material sourcing to final quality verification, guaranteeing authentic performance without exaggeration or misrepresentation.
N52 Performance Comparison
Understanding the performance advantages of N52 magnets requires comparison with other commonly available grades:
N42
| Energy Product (BHmax): | 42 MGOe |
|
Remanence (Br): |
13.0-13.5 kG |
|
Coercivity (Hc): |
≥10.5 kOe |
|
Relative Strength: |
100% (Baseline) |
Standard commercial grade suitable for most general applications
N48
| Energy Product (BHmax): | 48 MGOe |
|
Remanence (Br): |
13.8-14.2 kG |
|
Coercivity (Hc): |
≥11.0 kOe |
|
Relative Strength: |
114% of N42 |
High-performance grade for demanding applications
N52
| Energy Product (BHmax): | 48-52 MGOe |
|
Remanence (Br): |
14.3-14.8 kG |
|
Coercivity (Hc): |
≥10.5-11.0 kOe |
|
Relative Strength: |
124% of N42 |
Maximum commercial grade for critical applications
N52 Performance Advantage
Approximately 24% stronger than N42 grade magnets in equivalent configurations
Technical Specifications
Dimensional Range
Outer Diameter: 5mm - 150mm
Inner Diameter: 2mm - 120mm
Thickness: 2mm - 50mm
Standard Tolerance: ±0.05mm to ±0.1mm
Precision Tolerance: ±0.02mm (available)
Magnetic Properties
Grade: N52 (NdFeB)
BHmax: 48-52 MGOe
Br: 14.3-14.8 kG
Hc: ≥10.5 kOe
Hcj: ≥11 kOe
Max Operating Temp: 80°C (Standard)
Curie Temperature: 310°C
Coating Options
Standard: Nickel (Ni-Cu-Ni)
Alternative: Zinc (Zn)
Specialized: Epoxy, Parylene, Gold
Multi-layer: Enhanced corrosion resistance
Color Options: Standard silver, black epoxy, custom colors
Magnetization
Standard: Axial (through thickness)
Alternative: Radial, Multi-pole
Custom: Complex magnetization patterns
Magnetization Strength: Full saturation guaranteed
Field Uniformity: ±5% across magnet surface
High-Performance Applications
N52 ring magnets are specified for applications requiring maximum magnetic performance in constrained spaces:
High-Efficiency Motors
Brushless DC motors, servo motors, and precision actuators where maximum torque density and energy efficiency are critical for aerospace, medical, and robotics applications.
Advanced Sensor Systems
High-precision position sensors, encoders, and measurement instruments requiring strong, consistent magnetic fields for accurate signal generation in demanding environments.
Medical Imaging & Devices
MRI components, surgical navigation systems, and advanced therapeutic devices where maximum magnetic strength in minimal space enhances performance and patient outcomes.
Renewable Energy Systems
High-efficiency generators for wind turbines, hydroelectric systems, and other renewable energy applications where maximizing energy conversion efficiency is paramount.
Precision Robotics
Robotic actuators, grippers, and positioning systems where high magnetic strength-to-weight ratio enables precise control and responsive performance in automated systems.
Research & Scientific Equipment
Laboratory apparatus, particle accelerators, and specialized research equipment requiring maximum magnetic field strength for experimental and measurement applications.
Manufacturing Excellence
N52 Ring Magnets Production
Producing consistent N52 magnets requires specialized manufacturing expertise and stringent quality control throughout the production process. Our factory employs advanced techniques including:
- Precision raw material formulation with exacting control of neodymium, iron, and boron ratios
- Advanced sintering processes in controlled atmosphere furnaces with precise temperature profiles
- Specialized machining equipment capable of maintaining tight tolerances on delicate N52 materials
- High-capacity magnetization systems (up to 50,000 Oersteds) for complete saturation
- Comprehensive testing and verification of magnetic properties for every production batch
With over 30 years of magnet manufacturing experience and complete vertical integration from raw materials to finished products, we guarantee the authenticity and performance of our N52 magnets. Every magnet undergoes rigorous quality verification to ensure it meets or exceeds published specifications.
Quality Verification & Testing
Every batch of N52 magnets undergoes comprehensive testing to verify performance and quality:
Magnetic Performance
Precise measurement of Br, Hc, Hcj, and BHmax using specialized hysteresisgraph equipment to verify N52 specifications.
Dimensional Accuracy
Coordinate measuring machines (CMM) and precision micrometers verify all dimensions within specified tolerances.
Coating Integrity
Salt spray testing, cross-hatch adhesion tests, and thickness measurement verify coating quality and corrosion resistance.
Temperature Performance
Thermal cycling tests verify magnetic stability across specified operating temperature ranges.
Certifications & Compliance
IATF 16949:2016
ISO 9001:2015
ISO 14001
RoHS / REACH
CE Certified
ASTM Standards
Free N52 Ring Magnet Samples
Experience the superior performance of our N52 magnets firsthand. We offer complimentary samples for qualified engineering teams and businesses. Receive free N52 ring magnet samples for testing and evaluation, along with complete technical specifications and performance data sheets.
Includes: Free N52 magnet samples • Complete technical data • Application consultation • Quotation for production quantities
Contact Our N52 Specialists
Our technical team specializes in N52 grade magnets and their applications. Contact us for technical consultation, quotation requests, or application engineering support for your N52 ring magnet requirements.
Technical Hotline: +86 18119636123
Email: zb16@magnets-world.com
N52 specialists available
Response within 4 business hours
Global Delivery: Standard 3-6 weeks
Expedited options available
As a factory-direct manufacturer with over 30 years of experience, we guarantee the authenticity, performance, and quality of our N52 magnets. No minimum order quantity for samples.
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