Engineered high-performance NdFeB structures, custom round profiles, and permanent magnet assemblies.
Founded at the turn of the millennium, Zhejiang Laysun Magnetics Ltd. has rapidly evolved from a visionary startup to an industry pacesetter. Our state-of-the-art factory, sprawling across 100,000 square meters in the vibrant city of Suining, Sichuan, is the heart of our operations. Here, our dedicated team of 300 employees works tirelessly to produce an impressive 5,000 tons of rare earth magnets annually.
Your trusted partner in the world of advanced magnetic solutions. Since our inception in 1999, we have grown to become a national high-tech leader in manufacturing rare earth magnets, a testament to our unwavering commitment to excellence in this niche field. Specializing in the development, research, production, and sales of high-performance rare earth NdFeB magnets, we cater to a diverse range of applications. Our magnets are integral to various sectors, including electric vehicles, industrial motors, computers, and consumer electronics, enhancing the efficiency and performance of these technologies.
Maximizing flux density, dimensional precision, and environmental resistance in industrial designs.
Round rare earth magnets, primarily composed of sintered Neodymium-Iron-Boron (NdFeB), represent the peak of modern magnetic material science. The tetragonal Nd2Fe14B crystal structure possesses an exceptionally high uniaxial magnetocrystalline anisotropy, which yields extremely high saturation magnetization and coercive force. When machined into round, disc, cylinder, or ring profiles, these materials provide optimal force-to-volume ratios, key to compact space engineering.
In standard disc configurations, magnetization is typically axial (parallel to the cylindrical axis). However, specialized applications such as brushless DC (BLDC) motors or automotive steering systems (EPS) frequently require radial magnetization or multi-polar orientation along the circumference. Radial sintering demands complex alignment fields during powder compaction, but it produces superior rotational uniformity and flux consistency.
| Material Class | Remanence (Br) | Coercivity (Hcb) | Intrinsic Coercivity (Hcj) | Max Energy Product (BH max) | Max Temp Limit |
|---|---|---|---|---|---|
| NdFeB Sintered (N52) | 1.42 - 1.47 T | ≥ 828 kA/m | ≥ 875 kA/m | 390 - 414 kJ/m³ (50-53 MGOe) | 80 °C |
| NdFeB High-Temp (50UH) | 1.40 - 1.45 T | ≥ 828 kA/m | ≥ 1990 kA/m | 366 - 398 kJ/m³ (47-50 MGOe) | 180 °C |
| NdFeB Ultra-Temp (38EH) | 1.22 - 1.28 T | ≥ 907 kA/m | ≥ 2387 kA/m | 287 - 310 kJ/m³ (36-39 MGOe) | 200 °C |
| Sm2Co17 (High-Temp) | 1.10 - 1.15 T | ≥ 760 kA/m | ≥ 1500 kA/m | 215 - 240 kJ/m³ (26-30 MGOe) | 350 °C |
Precision grinding using diamond wheel machinery is crucial to achieving high dimensional tolerances on round rare earth magnets. Standard commercial tolerances are kept to ±0.05mm, while critical components for aerospace, medical sensors, or high-performance voice coil motors (VCM) can be calibrated down to ±0.01mm. This degree of control minimizes air gaps and thermal deflection in high-speed rotary assemblies.
Evaluating Total Cost of Ownership (TCO) and mitigating supply-chain vulnerabilities.
Fluctuations in Praseodymium-Neodymium (PrNd), Dysprosium (Dy), and Terbium (Tb) significantly impact pricing. We offer flexible index-based contract structures to assure cost predictability.
Executing zero-defect strategies through automated optical inspection (AOI) sorting systems. We target < 50 PPM for global automotive and high-reliability aerospace applications.
Proper packaging designed to isolate stray magnetic fields is critical for air freight compliance under IATA Regulation 953. Standardized steel-shield packaging ensures safe and compliant transport.
Through our advanced manufacturing plant in Suining, Sichuan, Zhejiang Laysun Magnetics Ltd. meets the scale demands of global supply chains. Sourcing rare earth magnets at scale requires direct evaluation of manufacturer production setups. Our 100,000 square meter plant houses continuous vacuum sintering furnaces, automated cutting networks, and high-efficiency surface plating plants. This complete vertical integration keeps production reliable and prices stable, protecting our partners from third-party vendor delays.
Integrating precision magnetICS into modern global technology sectors.
High-coercivity round magnet segments and arc configurations are vital for permanent magnet synchronous motors (PMSM) and automotive electric power steering (EPS) systems. These components must withstand operational temperatures exceeding 180°C while resisting demagnetization under high load conditions.
Servo motors, robotic joint actuators, and automated magnetic lifters (with up to 1,000kg lifting capacities) rely on high-grade sintered NdFeB. Precision sizing limits mechanical play, ensuring accurate positioning in multi-axis setups.
Compact voice coil motors (VCMs), acoustic drivers, and wireless charging interfaces (such as MagSafe phone rings) require extremely thin disc or ring magnets. These micro-magnets must be produced with high dimensional precision and thin, reliable protective coatings.
High-torque, low-weight magnetic components for robotic joints.
Lightweight NdFeB discs optimized for high RPM outrunner motors.
Automotive-grade magnets built to withstand extreme thermal conditions.
Durable magnetic cores for brushless hand-held power systems.
Ultra-thin profiles designed for premium consumer hardware.
Reliable, long-life magnetic components for smart home appliances.
Pioneering advancements in grain refinement, anti-corrosion, and heavy rare earth minimization.
To reduce dependence on scarce heavy rare earth elements (HREEs) like Dysprosium (Dy) and Terbium (Tb) while maintaining thermal stability, we employ advanced Grain Boundary Diffusion (GBD) processes. By diffusing Dy/Tb compounds directly along the boundary phases of sintered NdFeB crystals, we significantly boost intrinsic coercivity ($H_{cj}$) with minimal impact on remanent magnetization ($B_r$). This technique enables high thermal performance (grade UH/EH) while keeping material costs stable for our customers.
Uncoated neodymium magnets are highly susceptible to oxidation. Our chemical and physical vapor deposition processes apply multi-layered coatings that shield these components in harsh operating environments:
Browse our specialized selection of rare earth magnets engineered for industrial and commercial operations.
Adhering to strict international standards for high-reliability applications.
Operating as a global partner means maintaining compliance with international trade and quality standards. Our manufacturing processes conform to rigorous regulatory frameworks, ensuring seamless integration into your supply chain:
Our Quality Certifications: API 6D, API 607, CE, ISO9001, ISO14001, ISO18001, TS. (If you need our certificates, please contact us). We work alongside verified labs to confirm that all shipped orders meet these requirements, ensuring that every batch is traceably documented.
Headquartered in Hangzhou, China, Eneroc is building our worldwide subsidiaries and offices to serve our customers. This structure enables us to provide direct localization support, local regulatory clearance, and rapid logistics options for our commercial accounts across key economic zones.
Addressing key engineering and logistics questions from professional procurement teams.
Custom automotive assemblies, coated pot magnets, and heavy industrial magnetic lifters.
Join us in our journey towards a magnetically empowered future. At Zhejiang Laysun Magnetics Ltd., we are more than just a company; we are a movement towards a more efficient and technologically advanced world.
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Laysun Magnetics