Explore our premium grade NdFeB components manufactured under strict TS and ISO standards.
Video demonstration: Zhejiang Laysun Magnetics Ltd. state-of-the-art rare earth sintering and quality monitoring.
Your trusted global partner in the design, engineering, and mass-scale production of advanced permanent magnetic solutions. Since our inception in 1999, we have established our role as a national high-tech leader, integrating advanced sintering methodologies with strict quality management systems.
A technical guide on mechanical mounting options, magnetic properties, and coating selections for heavy-duty applications.
Screw-in neodymium magnets represent a hybrid solution combining the extreme power density of rare earth elements with the structural certainty of mechanical fastening. Standard neodymium magnets are inherently brittle and cannot easily be subjected to local mechanical stress. To counteract this, screw-in variants are built with specialized countersunk or counterbored channels. These channels enable countersunk or flat-head screws to attach the magnet directly to plastic, wood, or non-magnetic alloys without fracturing the underlying sintered crystal matrix.
Our manufacturing facility leverages vacuum induction melting (VIM) and close-loop helium powder milling to ensure high coercivity and limit structural micro-cracks. Through these refined processes, we consistently achieve magnet grades from N35 up to N52, alongside high-temperature operating configurations like the EH, UH, and AH series designed for temperatures peaking at 220°C.
| Magnetic Grade | Remanence (Br) - kGs | Coercivity (Hcb) - kOe | Intrinsic Coercivity (Hcj) - kOe | Max. Energy Product (BH max) - MGOe | Max. Temp Support (°C) |
|---|---|---|---|---|---|
| N35 - N52 | 11.7 - 14.8 | ≥ 10.8 | ≥ 12.0 | 33 - 53 | 80 |
| N38H - N48H | 12.2 - 14.3 | ≥ 11.4 | ≥ 17.0 | 36 - 49 | 120 |
| N35SH - N45SH | 11.7 - 13.7 | ≥ 11.1 | ≥ 20.0 | 33 - 46 | 150 |
| N30UH - N40UH | 10.8 - 12.8 | ≥ 10.2 | ≥ 25.0 | 28 - 41 | 180 |
| N28EH - N38EH | 10.4 - 12.5 | ≥ 9.8 | ≥ 30.0 | 26 - 39 | 200 |
Since NdFeB material contains abundant free iron, it oxidizes rapidly in humid environments. Zhejiang Laysun Magnetics offers custom barrier coatings, including Triple-Layer Ni-Cu-Ni, Epoxy Resins, Thermoplastic Elastomers, and Chemical Vapor Deposited Parylene for marine and hazardous operations.
Traditional cup assemblies (Pot Magnets) route magnetic flux paths to a single active face, dramatically increasing the localized pull force (often 3-4x compared to raw magnets). Screw-in pot assemblies protect the core from side-impact forces.
We supply axial, radial, and multi-pole orientation options. Countersunk magnets can be ordered in matched N/S pole pairs, allowing direct magnet-to-magnet latching systems with perfect geometric alignment.
Where high-retention structural magnets intersect with automation, automotive EPS, and offshore installations.
The requirement for reliable, modular mechanical-to-magnetic interfaces has skyrocketed. Our products serve as vital locking mechanisms, quick-release clamps, sensor mounts, and rotor assemblies. We supply directly to multinational developers in these critical sectors:
Different regions demand unique configurations of screw-in neodymium assemblies. In the United States and Canada, we observe high demand for heavy-duty rubber-coated pot magnets used in commercial vehicle rigging, outdoor sensor mounting, and modular machinery attachments. Compliance with ANSI tolerances is critical.
In the European Union, applications emphasize structural integration inside smart warehouse shelving, conveyor sorters, and high-end architectural fixtures. Strict adherence to RoHS, REACH, and WEEE directives dictates our coating choices, guaranteeing non-toxic, long-life, and corrosion-resistant finishes.
Within the APAC region, production efficiency dictates automated assembly lines. Our screw-in neodymium options are supplied with tight dimensional tolerances (down to ±0.05mm) to support robotic picking, visual inspection sorting, and automated screw-down operations.
A dual focus on the physical evolution of magnetics and the logistics backing massive global supply pipelines.
Traditionally, Dysprosium (Dy) and Terbium (Tb) were blended into the core alloy to preserve magnetic stability at high temperatures. Our next-generation R&D roadmap utilizes Grain Boundary Diffusion (GBD) technology. By diffusing Dy/Tb along the crystal boundaries rather than the entire grain, we reduce heavy rare earth use by 40% while preserving N52-class coercivity.
Zhejiang Laysun Magnetics operates a major 100,000 m² factory in Sichuan, close to rich domestic rare earth mining and refining hubs. This geographic positioning insulates our operations from raw material price volatility. By integrating the entire manufacturing process—from raw ingot casting and hydrogen decrepitation to sintering, precision wire cutting, machining, plating, and testing—we maintain direct custody of quality.
As the global demand for green energy transitions rises, NdFeB recycling has become paramount. Zhejiang Laysun Magnetics is pioneering closed-loop scrap recovery processes. We are optimizing chemical extraction methods to reclaim neodymium oxide from end-of-life electric vehicle motors and electronic drives, routing these materials back into high-performance industrial magnets.
Precision rare-earth components designed for specific industrial demands, motor architectures, and custom structural assemblies.
Providing the framework for secure, verifiable, and standardized supply lines to Tier 1 aerospace, automotive, and industrial buyers.
We comply with international design and testing protocols, ensuring chemical homogeneity, mechanical safety margins, and structural endurance. Contact our engineers for complete documentation packages, including material reports, salt spray test records, and magnetization graphs.
Certified standards include:
API 6D, API 607, CE, ISO9001, ISO14001, ISO18001, TS.
System Quality
Eco-Compliance
Industrial Sintering
Powering the structural assemblies and high-performance motors of the future.
With corporate planning based in Hangzhou and scalable manufacturing in Sichuan, we support logistics hubs globally.
To address the demands of multinational procurement structures, Zhejiang Laysun Magnetics maintains technical offices and warehousing centers. Our local facilities support:
Direct answers from our senior magnetic design engineers on mounting, thermal limitations, and ordering logistics.
Explore our countersunk, threaded stud, and hook configurations designed for industrial mounting and high-load fixtures.
Whether you need custom countersunk configurations, specialized anti-corrosive coatings, or large-scale automotive-grade shipments, our team of engineers is ready to assist. Contact us today to receive detailed technical datasheets, magnetic flux simulations, or a competitive quote.
For inquiries about our products, customization options, or bulk pricelist, please reach out to us and our sales engineers will respond within 24 hours.
Laysun Magnetics