OEM Bulk Permanent Strong Small Circular Neodymium Magnets for Assembly
Brand: magnet forever
Product origin: china
Delivery time: 35 days
Supply capacity: 100000 pieces/month
High-precision Zinc Plated Neodymium Disc Magnets designed for industrial assembly, sensors, and mechanical holding. Featuring custom grades from N35 to N52 and tight tolerances (±0.05mm), our factory provides durable zinc coating for practical anti-corrosion protection. Ideal for OEM/ODM orders with fast lead times and bulk supply.
Zinc Plated Neodymium Disc Magnets are high-performance permanent magnets engineered for industrial distributors, OEM manufacturers, and product designers seeking reliable holding force and practical surface protection. Made from high-grade sintered NdFeB (Neodymium Iron Boron) materials, these circular rare earth magnets provide an exceptional strength-to-size ratio for compact and precision assemblies.
Featuring a durable zinc finish, these disc magnets offer cost-effective corrosion resistance tailored for indoor applications, enclosed mechanical housings, and concealed components. Whether you require standard off-the-shelf micro dimensions or fully customized industrial orders, we deliver full-tier support from sample evaluation to mass manufacturing.
Technical Specifications & Parameters
We provide a comprehensive range of technical configurations to meet precise engineering drawings and assembly demands:
| Parameter | Specification Details |
|---|---|
| Product Name | Zinc Plated Neodymium Disc Magnet / Round NdFeB Magnet |
| Magnetic Material | Sintered Neodymium-Iron-Boron (NdFeB) |
| Shape / Profile | Disc / Cylinder / Round (Custom profiles available) |
| Magnetic Grades | N35, N38, N42, N45, N48, N50, N52 (M, H, SH series optional) |
| Popular Sizes | D8×1mm, D10×1mm, D10×2mm, D10×3mm, D10×5mm (Customized D1-D200mm) |
| Surface Coating | Zinc (Zn) Plating (Galvanized Metallic Silver Finish) |
| Magnetization Direction | Axial Magnetization (Through Thickness) or Diametrical |
| Dimensional Tolerance | ±0.05 mm standard (Precision machining down to ±0.02 mm) |
| Working Temperature | Standard ≤80°C (Up to 150°C/200°C for high-temp grades) |
| Supply Type | Factory Wholesale / OEM & ODM Custom Manufacturing |
Why Choose Zinc Plating for NdFeB Disc Magnets?
While nickel (Ni-Cu-Ni) is widely used for decorative mirror finishes, zinc coating (Zn) offers unique engineering advantages for industrial assembly:
Cost-Effective Protection: Provides essential anti-oxidation coverage at a competitive cost structure for high-volume wholesale orders.
Practical Indoor Durability: Prevents raw rare-earth oxidation in dry indoor operating conditions, plastic-molded parts, and adhesive-sealed enclosures.
Strong Bonding Capability: The smooth, matte metallic silver surface exhibits excellent compatibility with structural adhesives and industrial glues.
Controlled Layer Thickness: Thin galvanic coating layers preserve tight dimensional tolerances necessary for precision electronic housing.
Choosing the Right Magnetic Grade & Size
Selecting the ideal neodymium magnet requires balancing spatial constraints, air gap, working temperature, and required pull force:
Standard Grades (N35 – N42): Highly recommended for general magnetic catches, sensors, closures, and plastic insertion parts requiring stable economic performance.
High-Performance Grades (N48 – N52): Engineered for applications with strict volumetric limits where maximum magnetic energy product ($BH_{max}$) is mandatory.
Hot Mini Sizes: Precision dimensions such as D8×1mm, D10×1mm, and D10×5mm are widely supplied for micro-mechanisms, leathercraft fasteners, and compact electronics.
Quality Control & B2B Manufacturing Reliability
To deliver consistent quality across mass production runs, every batch undergoes standardized testing aligned with international ISO and RoHS standards:
Dimensional Inspection: Micrometer and optical measurement checks to verify strict compliance with project drawings.
Magnetic Field Assessment: Surface Gauss checks and BH-curve data validation to guarantee exact grade specifications.
Coating Adhesion & Finish Check: Visual and mechanical evaluation to confirm uniform plating thickness without flaking or micro-cracks.
Export Protection Packaging: Specialized demagnetized isolation packaging for air transport, preventing magnetic flux leakage during international shipping.
Frequently Asked Questions (FAQ)
1. What is the Minimum Order Quantity (MOQ) for zinc plated disc magnets?
There is no single MOQ for all sizes. MOQ depends on magnet dimensions, requested grade, coating specifications, and current stock status. Contact our team with your required dimensions and quantities for a rapid stock check and production evaluation.
2. Can you produce mini sizes like D8×1mm or D10×1-5mm?
Yes. Ultra-thin disc magnets such as D8×1mm, D10×1mm, D10×2mm, and up to D10×5mm are within our standard manufacturing scope. We also accommodate custom technical drawings for non-standard diameters and thicknesses.
3. Is zinc plating better than nickel plating for neodymium magnets?
Zinc plating offers a matte silver appearance, thinner layer buildup, and strong adhesive bonding capabilities at a lower price point. It is optimal for hidden components and dry indoor assemblies. Nickel plating provides a higher shine and improved moisture resistance for exposed exterior surfaces.
4. Do you support OEM custom branding and special packaging?
Yes. We support custom labeling, barcode packaging, inner box arrangements, and customized outer cartons tailored for wholesale distribution or retail preparation.
Request a Custom Quotation & Technical Evaluation
Looking for custom zinc-plated neodymium disc magnets or high-volume wholesale pricing? Send us your technical drawings, magnetic grade requirements, operating temperature, and order quantities. Our engineering team will respond within 24 business hours.
