neodymium disc magnets

In precision engineering and advanced manufacturing, Neodymium Disc Magnets deliver exceptional magnetic performance in compact circular form. These high-performance rare earth magnets are engineered by a manufacturer with three decades of permanent magnet expertise, specializing in NdFeB materials for B2B industrial applications. Our Neodymium Disc Magnets serve critical roles in brushless DC motors, magnetic couplings, sensor systems, and precision holding fixtures across automotive, aerospace, medical device, and robotics sectors. Utilizing high-purity raw materials with ≥95% purity ensures consistent magnetic properties and long-term stability, avoiding recycled materials that compromise performance. With advanced machining capabilities achieving tolerances within ±0.01mm, these disc magnets meet stringent precision requirements for modern industrial assemblies.

Parameter	Details
Product Name	Neodymium Disc Magnets (NdFeB Disc Magnets)
Shape	Disc/Circular with axial magnetization
Standard Sizes	Diameter: 2mm-100mm; Thickness: 1mm-50mm (Custom diameters up to 150mm)
Grade Range	N35-N52 (Standard), N30-N55 (Full series including M/H/SH/UH/EH/AH temperature grades)
Material Composition	High-purity NdFeB (Neodymium ≥95%, Iron, Boron) with heavy rare earth additives
Surface Coating	Ni-Cu-Ni triple-layer (Standard), Optional: Zn, Epoxy, Au, Ag, PTFE, Rubber
Dimensional Tolerance	±0.01mm to ±0.1mm (Precision machining for high-accuracy applications)
Magnetic Properties	Br: 1.2T-1.5T; Hcb: ≥10 kOe; BHmax: 35-55 MGOe
Operating Temperature	80°C (Standard), Up to 200°C+ with high-temperature grades
Pull Force Range	0.5 lbs to 500+ lbs depending on size and grade

 

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• Axial magnetization with strong magnetic field concentration on flat surfaces
• Precision machining ensures uniform dimensions for automated assembly processes
• High surface finish with triple-layer Ni-Cu-Ni coating prevents corrosion in humid environments
• Widely used in BLDC motors, magnetic encoders, security systems, and medical imaging devices
• Custom Neodymium Disc Magnets available with specific diameter-thickness ratios for optimized magnetic circuits

• 30-year magnet specialist with full control from raw material to finished product
• Precision CNC machining achieves ±0.01mm tolerance for high-accuracy industrial applications
• Complete NdFeB grade spectrum (N30-N55) including temperature-resistant M/H/SH/UH/EH/AH series
• Automated electroplating lines ensure uniform coating thickness and superior corrosion resistance
• Rigorous quality control with SGS testing for 300+ substances ensures REACH/RoHS/CP65 compliance
• High-purity materials (≥95%) prevent demagnetization and ensure consistent magnetic output batch-to-batch

1. High-purity NdFeB powder preparation with ≥95% neodymium content
2. Isostatic pressing in magnetic field orientation for optimal magnetic alignment
3. Vacuum sintering at precisely controlled temperatures
4. CNC grinding and slicing to achieve disc shape with precise dimensions
5. Surface treatment and multi-layer electroplating (Ni-Cu-Ni standard)
6. Magnetization in powerful pulse magnetizers
7. Comprehensive testing: dimensional accuracy, coating thickness, magnetic properties
8. Individual packaging in partitioned boxes to prevent contact damage

Every batch of Neodymium Disc Magnets undergoes 12-step quality verification:

• Raw material composition analysis (ICP-OES)
• Dimensional accuracy measurement with coordinate measuring machine
• Coating thickness testing via X-ray fluorescence
• Salt spray testing (ASTM B117) for corrosion resistance
• Magnetic property testing with hysteresis graph
• Temperature cycling tests (-40°C to +150°C)
• Adhesion testing of coating layers
• SGS testing for REACH, RoHS, and other regulatory compliance

Each Neodymium Disc Magnet is individually wrapped in anti-static foam and placed in compartmentalized plastic boxes. Outer cartons feature moisture barrier lining and shock-absorbent corner protection. For international shipments, we provide complete documentation including material certificates, test reports, MSDS, and customs declarations. Sea, air, and express delivery options available with tracking. European and North American warehouse stock enables fast regional delivery.

Our engineering team provides complimentary magnetic circuit design assistance for Neodymium Disc Magnets integration. We offer free samples for evaluation, rapid prototyping (5-7 days), and flexible customization including:

• Custom diameters from 0.2mm to 150mm with precise thickness control
• Special coatings: epoxy for electrical insulation, rubber for impact protection
• Multi-pole magnetization patterns for encoder applications
• Countersunk holes or special geometries for mechanical fixation
• Kitting and pre-assembly services for automated production lines