Custom Neodymium Disc Magnets: Spec Sheet, Tolerances and OEM Process

If you’re an aerospace engineer, automotive designer or motor design specialist sourcing high-stability permanent magnetic components, custom neodymium disc magnets from Fullzen Technology are your ideal choice. As the strongest commercial rare earth magnets, sintered  NdFeB disc magnets feature high energy density, compact structure and stable magnetic performance, widely customized for precision industrial equipment, vehicle motors and aerospace sensing systems. This guide systematically sorts out all the technical parameters you need to confirm before customization, standardized tolerance standards, optional configurations and our mature OEM service process, helping you accurately put forward customization requirements, avoid communication errors, and greatly shorten sample confirmation and mass production cycles.

Why Choose Custom Neodymium Disc Magnets from Fullzen Technology​

Standard neodymium disc magnets often fail to meet the dimensional accuracy, temperature resistance and assembly matching requirements of high-end industrial and precision equipment. For professional engineering projects including automotive motors, aerospace sensors and automated precision components, personalized customization is essential. As a professional China-based rare earth magnet manufacturer with more than 12 years of industry experience, Fullzen Technology focuses on OEM and project-based customized magnet production, strictly implementing international production and quality inspection standards.​

We support full customization of size, tolerance, grade, coating and magnetization direction, and all products comply with REACH and RoHS environmental certification standards. Whether you need ultra-precision small-size disc magnets or high-temperature resistant large-size magnetic components, we can optimize product performance and control costs according to your application scenarios. We offer comprehensive custom neodymium magnet solutions for all project scales, serving global industrial buyers from more than 30 countries.​

 

Custom Specs You Need to Provide​

To ensure the customized neodymium disc magnets perfectly match your assembly and usage scenarios, you need to confirm and provide the following core parameters. Clear parameter input is the premise of accurate quotation, qualified sample production and stable mass production.​

Dimensions & Tolerances​

Dimensional accuracy directly determines the assembly fit of disc magnets. Fullzen Technology implements strict industrial tolerance standards for customized disc magnets. The conventional dimensional tolerance is controlled within ±0.1mm, and ultra-precision tolerance up to ±0.05mm is available for high-precision equipment scenarios. You need to provide the exact diameter and thickness parameters of the magnet, and specify special tolerance requirements if your project has high assembly precision standards. All sizes are processed by automated precision cutting and grinding equipment to ensure consistent batch dimensional stability.​

Magnet Grade Selection​

Magnet grade determines magnetic strength, temperature resistance and service performance. We provide full-range mainstream neodymium disc magnet grades including N35, N42, N45, N48 and N52, as well as high-temperature resistant M, H, SH series grades to adapt to different working environments. N35-N45 grades are suitable for conventional holding and sensing scenarios with cost advantages; N48-N52 high-performance grades are preferred for precision motors and compact high-magnetic-force required equipment; high-temperature series grades can work stably in 100℃-200℃ environments to avoid demagnetization failure.​

Surface Coatings​

Neodymium disc magnets are prone to oxidation and corrosion without protective coating. We provide diversified surface coating solutions to adapt to different usage environments: Ni-Cu-Ni nickel plating is the standard coating with excellent wear and corrosion resistance for most industrial scenarios; epoxy coating provides super moisture and corrosion resistance, suitable for humid and outdoor working environments; zinc coating is a cost-effective option for dry indoor conventional applications. You can select the matching coating according to your equipment’s operating environment and durability requirements.​

Magnetization Direction​

Magnetization direction directly affects the magnetic field distribution and equipment operating effect of disc magnets. We support two mainstream magnetization methods: axial magnetization and diametric magnetization. Axial magnetization is the most common and cost-effective solution, with magnetic poles on two circular surfaces, suitable for fixing, sensing and packaging scenarios; diametric magnetization forms magnetic poles on the curved surface, mostly used for small motors, encoders and precision rotating equipment. You need to confirm the magnetization direction according to your product assembly logic.​

Pull Force & Performance Requirements​

For scenarios with clear magnetic force requirements, you can put forward explicit pull force indicators. We will match the corresponding magnet grade, size and process parameters according to your pull force standards, and test and verify the magnetic performance before delivery to ensure the actual magnetic force meets project design expectations.​

 

 Fullzen’s 6-Step OEM Process​

We have standardized a complete set of OEM customized production processes for neodymium disc magnets, realizing full-process traceability from demand docking to product delivery, effectively avoiding customization errors and quality fluctuations, and ensuring stable cooperation for bulk orders.

Step 1: Submit Your Drawing & Requirements​

You can provide official engineering drawings or written detailed parameter specifications, including size, tolerance, grade, coating, magnetization direction, quantity and application scenarios. Our engineering team will sort out your core requirements for preliminary docking.​

Step 2: Quotation & Feasibility Review​

Our engineers will conduct manufacturability evaluation, raw material matching and process difficulty assessment according to your requirements, and provide an accurate formal quotation with clear validity period, MOQ and lead time.​

Step 3: Prototype Sample Production​

After confirming the quotation, we will arrange sample production strictly in accordance with the finalized parameters. The sample production follows the same process as mass production to restore the actual product performance truly.​

Step 4: Sample Approval & Final Confirmation​

We will send the produced samples to you for performance and assembly testing. All parameters will be finalized after your confirmation, and no arbitrary changes will be made in the subsequent mass production process.​

Step 5: Mass Production & QC​

Based on the confirmed samples, we carry out full-scale automated mass production. Multiple rounds of dimensional inspection, magnetic performance testing and appearance inspection are set in the production process to eliminate defective products.​

Step 6: Packing & Delivery​

Finished magnets are packed with anti-collision foam and standard export cartons, with professional magnetic isolation packaging to avoid magnetic interference during transportation. We support air, sea and express delivery to meet your different timeliness needs.​

 

Common Custom Applications​

Custom neodymium disc magnets offer extremely broad applicability in high-end industrial fields, and we have accumulated extensive customization experience in four core application scenarios.

Automotive Motors & Sensors​

Custom disc magnets are core components of new energy vehicle motors, steering sensors and automotive electronic accessories. We strictly control product consistency to ensure the stable operation of automotive equipment. We also supply neodymium cylinder magnets for motor assemblies with consistent quality to meet diversified motor structure design needs.​

Industrial Automation & Robotics​

In industrial automation equipment and robot precision positioning mechanisms, customized disc magnets provide stable magnetic sensing and fixing force, ensuring high-precision operation and repeated positioning accuracy of automated equipment.​

Consumer Electronics & Medical Devices​

Miniaturized customized disc magnets are applied to electronic speakers, magnetic charging components, medical diagnostic equipment and portable medical devices. The products are environmentally friendly, safe and stable, meeting medical and consumer electronics industry standards.​

Renewable Energy & Green Tech​

Our high-performance customized disc magnets are used in wind power equipment and new energy power generation components, relying on high energy density and long service life to support the stable operation of green energy equipment.​

 

MOQ, Lead Time & Free Sample Policy​

To facilitate customers’ project testing and bulk procurement, Fullzen Technology has formulated flexible service rules. The conventional MOQ for custom neodymium disc magnets is 1000pcs; for prototype testing projects, we support flexible small-batch customization and free sample services for qualified B2B customers. The lead time for standard customized products is 15-20 working days, and stocked conventional sizes can be delivered within 7-15 working days, effectively shortening your project cycle.​

 

Why Fullzen Is Your Reliable Neodymium Disc Magnet Supplier​

As a professional custom neodymium magnet manufacturer, Fullzen Technology has independent production workshops and a complete quality control system, realizing full self-control from raw material procurement, sintering molding to precision finishing. Beyond discs, we produce high-precision neodymium ring magnets for complex designs, covering mainstream magnet shapes required by industrial projects. We have raw material cost advantages, with product prices 10%-30% lower than the market under the same quality standards. With rich experience in serving global engineering projects, we can provide professional technical guidance and one-stop OEM customization solutions for your magnet design and procurement.