Magnet Assemblies
Custom Magnet Solutions
Tailored Magnetic Performance for Your Unique Needs
Unlike standard off-the-shelf magnets, TOPMAG’s Custom Magnet service focuses on solving your unique magnetic challenges. Whether you need ultra-precise magnetic field distribution, extreme environment adaptation, or fully integrated magnetic assemblies, our Chinese headquarters R&D team provides end-to-end customization, from material selection and structural design to prototype validation and mass production. We combine 20+ years of magnetic material expertise with flexible manufacturing capabilities, delivering customized solutions that perfectly match your terminal equipment requirements.
Custom Value Proposition
TOPMAG’s Custom Magnets are categorized based on material composition, geometric complexity, and functional specifications, encompassing all advanced magnetic performance requirements, and can be engineered to precise customer-defined parameters.
View the relevant TOPMAG product page:

NdFeB Magnets

Ferrite Magnets

Alnico Magnets

SmCo Magnets

Magnet Assemblies
Custom Value Proposition
| No. | Core Value | Detailed Explanation |
|---|---|---|
| 1 | Solve Unmet Needs | Standard magnets cannot cover extreme working conditions (e.g., -60°C low temperature, 600°C high temperature, strong radiation) or ultra-precise magnetic field requirements. Our custom service fills this gap, providing solutions that off-the-shelf products cannot achieve. |
| 2 | Optimize Total Cost | By tailoring magnetic performance to your exact requirements, we eliminate over-specification waste and reduce your material and assembly costs by 10-20% compared to using standard magnets. |
| 3 | Accelerate Product Launch | Our rapid prototyping service (3-5 days for samples) and flexible small-batch production (MOQ 10 pcs) shorten your product development cycle by 30% on average. |
| 4 | Long-Term Technical Partnership | We assign a dedicated technical project manager to each custom project, providing ongoing support from design to mass production, ensuring your magnetic solution evolves with your product upgrades. |
Core Customization Capabilities
Custom Magnet Solutions are engineered to overcome specific application challenges, making them the definitive choice for industries where standard magnets fall short. Their strategic value is defined by several transformative capabilities:
Material Customization
Mix rare earth (NdFeB/SmCo) and non-rare earth (Alnico/Ferrite) materials to balance performance and cost; develop special alloys for extreme environments (e.g., corrosion-resistant SmCo, low-temperature NdFeB)
Shape & Size Customization
Produce irregular shapes (stepped, curved, multi-pole) with dimensional tolerance up to ±0.003mm; support large-size magnets (length ≤ 1000mm) and micro-magnets (diameter ≥ 0.5mm)
Magnetic Performance Customization
Adjust magnetic energy product (BH)max from 1 MGOe to 55 MGOe; customize magnetic field uniformity (±0.05mT) and multi-pole magnetization patterns
Surface Treatment Customization
Provide plating (Ni-Cu-Ni, Zn), coating (epoxy, PTFE), and passivation for special corrosive environments; support biocompatible coatings for medical applications
Assembly Integration Customization
Integrate magnets with metal/plastic components to create fully assembled magnetic modules, reducing your secondary assembly costs
Industry-Specific Custom Solutions
Leveraging the strengths of application-driven design, multi-material synergy, and precision engineering, TOPMAG’s Custom Magnet Solutions are extensively deployed in sectors such as new energy, industrial automation, aerospace, and medical devices, delivering core magnetic innovations for advanced manufacturing.
• Medical Devices——Customize low-noise, high-precision magnetic assemblies for MRI systems, surgical robots, and diagnostic sensors; meet ISO 13485 medical device quality standards
• Aerospace & Defense——Develop lightweight, radiation-resistant SmCo magnets for satellite attitude control and missile guidance systems; comply with MIL-STD-810 environmental testing standards
• New Energy Vehicles——Design high-torque NdFeB rotor assemblies for EV motors; optimize thermal stability to withstand 180°C continuous operation
• Semiconductor Equipment——Produce ultra-precise magnetic positioning components for wafer handling systems; achieve ±0.02mm dimensional accuracy
• Industrial Automations——Customize magnetic brakes and clutches for robotic arms; ensure 100,000+ hours of maintenance-free operation
End-to-End Customization Process
Demand Assessment
Our technical team conducts in-depth communication to understand your application scenario, magnetic performance requirements, environmental constraints, and volume needs, and provides a free feasibility analysis report.
Solution Design
Based on your needs, we select the optimal magnetic material, design the structural shape, simulate the magnetic field distribution via FEA (Finite Element Analysis), and propose a detailed customization plan.
Prototype Validation
We produce 1-5 prototypes for performance testing (magnetic field, temperature resistance, mechanical strength) and functional verification, and iterate the design based on your feedback.
Small-Batch Trial Production
After sample confirmation, we conduct small-batch production (10-500 pcs) to verify manufacturing stability and consistency.
Mass Production & Delivery
We scale up production with strict quality control, and provide full traceability for each batch of custom magnets.
Custom Technical Parameter Range
| Parameter | Specification |
|---|---|
| 1. Material Range | NdFeB (N35-N55, SH/H/EH/UH), SmCo (SmCo5, Sm2Co17), Alnico (Alnico 5-9), Ferrite (Y25-Y45), Hybrid Alloys |
| 2. Dimensional Tolerance | ±0.003mm (precision grade) to ±0.1mm (general grade) |
| 3. Temperature Resistance | -60°C to 600°C (depending on material) |
| 4. Magnetic Energy Product | 1-55 MGOe (1-228 kJ/m³) |
| 5. Magnetization Direction | Axial, radial, multi-pole, custom vector magnetization |
| 6. Surface Treatment | Ni-Cu-Ni plating, Zn plating, epoxy coating, PTFE coating, passivation, biocompatible coating |
Sample Center
We provide free Custom Magnet samples (only freight is charged) to help you validate the design and performance before committing to mass production. Sample application process:
| Process Step | Detailed Description |
|---|---|
| 1. Submit Sample Request | Fill in the sample application form on the website, indicating the required shape, grade, size and surface treatment |
| 2. Sample Confirmation | Our technical team will confirm the sample details with you within 24 hours and issue a sample quotation (freight only) |
| 3. Sample Delivery | After payment of freight, we will ship the sample within 3-5 working days; Provide tracking number for inquiry |
| 4. Test & Feedback | You can conduct performance tests on the sample; Our team provides technical support for test results |
| 5. Mass Order | After sample confirmation, we will arrange mass production according to the sample standards, ensuring consistent quality |
Looking for a reliable Custom Magnet supplier? Contact TOPMAG now! We provide tailored solutions based on your unique application requirements, from concept and material selection to performance optimization. Professional technical team, 24-hour online consultation, global logistics support.