Explore our primary array of high-grade custom neodymium permanent magnets engineered for maximum magnetic flux density and stability.
Optimal magnetic fastening solutions for commercial and retail identification networks.
Ultra-high precision magnets tailored for high-speed voice coil actuators and precision lens control.
Multipolar radial ring geometries optimized for micro-motors, encoders, and precision rotor systems.
High pull force magnet assemblies designed for heavy-duty industrial storage and mounting fixtures.
Engineered segment profiles delivering sustained remanent flux at operating limits for large industrial dynamos.
Raw material blocks and custom cuts offering high magnetic energy product (BH)max to meet tight specifications.
Nickel-plated steel cups holding high-coercivity NdFeB cores to multiply holding force and resist impact.
Classic cup structure holding NdFeB cores with threaded stud features for versatile industrial integration.
Welcome to Zhejiang Laysun Magnetics Ltd., 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.
Our state-of-the-art manufacturing facility spans a massive footprint, integrating metallurgy, powder processing, sintering, grain boundary diffusion (GBD), precision machining, and electroplating. We operate at the forefront of the industry to provide premium grade magnets with custom remanent magnetization ($B_r$) parameters that perform reliably even in the most demanding magnetic circuits.
An authoritative guide for magnetic circuit designers and industrial procurement engineers looking to maximize magnetic performance.
In permanent magnet design, Remanent Magnetization ($B_r$, often termed residual induction) is one of the most critical engineering constants. It measures the residual magnetic induction remaining within a magnetic material when the external magnetizing field strength ($H$) is reduced to zero. In physical terms, $B_r$ determines the peak flux density that the magnet can deliver to a given magnetic gap, directly impacting the torque density of motors, the sensitivity of acoustic transducers, and the holding force of structural magnetic fixtures.
Achieving high remanence is typically a balancing act against coercivity ($H_{cj}$). A material grade with ultra-high $B_r$ (such as N52 or N55) generally displays lower resistance to demagnetization under thermal stress compared to specialized high-coercivity grades (such as N35EH or N40AH). At Zhejiang Laysun Magnetics Ltd., we employ advanced chemical profiling and physical metallurgy to push the boundaries of this trade-off.
To overcome the limits of traditional NdFeB alloys, Laysun implements Grain Boundary Diffusion (GBD). By diffusing heavy rare earth elements like Dysprosium (Dy) or Terbium (Tb) through the grain boundary phase of the sintered Nd₂Fe₁₄B crystals, we significantly elevate the intrinsic coercivity ($H_{cj}$) without reducing the core grain's magnetization, thereby retaining a superior level of remanent magnetization ($B_r$). This process allows for the creation of components that maintain stable magnetic fields even under extreme temperatures up to 220°C.
| NdFeB Grade Group | Remanence ($B_r$) Range (Tesla) | Coercivity ($H_{cb}$) (kA/m) | Intrinsic Coercivity ($H_{cj}$) (kA/m) | Max Operating Temp (°C) |
|---|---|---|---|---|
| N-Series (N35 - N52) | 1.17 - 1.48 | ≥ 876 - 955 | ≥ 955 | 80 |
| SH-Series (N35SH - N50SH) | 1.17 - 1.43 | ≥ 876 - 1011 | ≥ 1592 | 150 |
| UH-Series (N33UH - N48UH) | 1.13 - 1.39 | ≥ 851 - 1003 | ≥ 1990 | 180 |
| EH-Series (N30EH - N45EH) | 1.08 - 1.35 | ≥ 812 - 979 | ≥ 2388 | 200 |
| AH-Series (N30AH - N40AH) | 1.08 - 1.28 | ≥ 812 - 947 | ≥ 2785 | 220 |
Pioneering the next generation of rare earth materials to meet carbon neutrality and ultra-high efficiency goals.
To combat raw material volatility, our R&D team is engineering high-temperature magnets that limit or entirely eliminate Dysprosium and Terbium. Through advanced grain size refinement (down to the sub-micron scale), we achieve robust coercivity levels while preserving the high $B_r$ required for automotive traction systems.
We are expanding our technological envelope into anisotropic bonded materials. By structuring the grain boundaries at a molecular level, these materials achieve higher remanent values and dynamic performance, unlocking complex geometries for the next generation of compact sensors and direct-drive actuators.
Laysun is building supply channels incorporating recycled magnets back into the strip casting process. This closed-loop metallurgy satisfies strict ESG mandates for global enterprises, cutting energy consumption during manufacturing by 60% while maintaining magnetic performance profile integrity.
How our custom remanent magnetization capabilities resolve technical challenges across critical global sectors.
Modern traction motors require extremely stable $B_r$ at high temperatures to maintain consistent torque and vehicle range. We supply customized sintered block magnets that leverage GBD technology, ensuring minimal thermal demagnetization under continuous high-power cycles.
Precision servo motors in robotic arms demand high-energy-density NdFeB magnets. Our precise dimensional tolerances (+/-0.05mm) combined with high flux consistency permit robots to maintain position repeatability under variable load states.
Weight reduction is critical for UAV flight efficiency. Our high-grade custom ring and segment magnets deliver maximum magnetic force per gram, enabling lightweight drone motors to run cooler and consume less power.
Brushless motors in industrial power tools face strong vibration and sudden temperature spikes. We manufacture NdFeB block and arc magnets with highly adhesive coatings (epoxy, chemical plating) that prevent cracking and magnetic decay.
Miniature audio drivers, dynamic transducers, and smartphone magnetic interfaces (such as MagSafe) require extremely thin NdFeB rings and plates. Laysun produces ultra-thin micro-magnets without compromising magnet stability.
From variable-frequency compressor motors in high-efficiency air conditioners to laundry equipment, our large-capacity sintered NdFeB solutions lower system energy draw and reduce operational acoustic noise.
Explore our diverse portfolio of sintered and custom neodymium magnetic assemblies developed for target system architectures.
Tailored magnetic geometries providing linear force outputs in hard disk drives, optical focus systems, and high-frequency speakers.
Sintered NdFeB rings with optional radial or diametrical magnetization configurations for brushless rotor construction.
Industrial-grade block magnets featuring multi-layer Ni-Cu-Ni plating for superior atmospheric protection and structural integrity.
Optimized alloys providing deep magnetizing stability, suitable for custom machining and demanding environments.
Precision array magnets custom-shaped to enable rapid self-alignment in consumer device interfaces.
High-coercivity blocks engineered to resist demagnetization under the severe thermal stresses of EV powertrains.
Versatile cylindrical and coin profiles designed for modern switchgear, relays, and hardware locking mechanisms.
Cylindrical magnets with tight axial alignment, ideal for high-precision magnetic sensors and industrial control components.
Specialized high-durability magnets designed for Electronic Power Steering, offering high reliability in vehicular chassis structures.
Standard and heavy-duty blocks providing high holding force ratios, designed for heavy machinery applications.
Optimized curved geometries that fit motor housings to reduce gaps and increase magnetic induction efficiency.
Ultra-thin circular layouts designed to provide stable holding power for consumer smartphone mounting accessories.
Our main production hub, located in Suining, Sichuan, operates under advanced Smart Factory 4.0 principles. The facility is strategically positioned near core Chinese rare earth mining and refining hubs. This proximity secures a reliable, direct feed of critical raw elements (Neodymium, Praseodymium, Dysprosium, Terbium), insulating our operations and our clients from raw material price volatility.
By utilizing automated vacuum induction melting furnaces, hydrogen decrepitation systems, jet mills, and multi-axis CNC slicing machines, we ensure our annual capacity of 5,000 tons is delivered with high consistency. Each production batch undergoes strict automated physical inspection, keeping geometric tolerances and magnetic profile distribution within strict thresholds.
Watch our manufacturing line in action and explore our production capabilities.
For B2B buyers, sourcing custom magnets goes beyond locating high $B_r$ parameters. It requires vetting manufacturing capabilities for compliance, supply stability, and long-term product reliability. Laysun works closely with procurement departments to streamline compliance workflows.
Headquartered in Hangzhou, China, Eneroc is building our worldwide subsidiaries and offices to serve our customers. From our base, we direct local engineering support, manage bonded warehouses, and handle shipping clearance for our European, American, and Asian clients.
Meeting global standards for quality, environment, and industrial safety.
Zhejiang Laysun Magnetics operates under rigorous quality controls, including API 6D, API 607, CE, ISO9001, ISO14001, ISO18001 / TS16949 guidelines. If you need documentation copies for your supplier verification, please contact us.
Answers to engineering and procurement questions regarding custom NdFeB magnet performance.
Discover our specialized magnetic assemblies and high-performance custom blocks for industrial setups.
Heavy-duty rectangular blocks with customized magnetization vectors for sorting and logistics systems.
Potted magnet designs featuring countersunk holes for quick screw mounting in industrial enclosures.
Precisely configured circular arrays engineered for quick, secure magnetic docking in mobile devices.
Robust manual lift systems built with high-performance NdFeB cores to securely lift heavy steel plates.
Heavy-duty magnetic rings designed for high-RPM rotors and demanding electromechanical generators.
Motor-grade sintered blocks designed with GBD treatment to maintain stable fields under high operational loads.
Highly reliable sensor and rotor magnets produced to strict automotive safety standards.
Heavy-duty magnetic pins designed for industrial scheduling and office visual management systems.
For inquiries about our high-performance NdFeB solutions, custom remanent magnetization setups, or price estimates, submit your details. Our engineering team will respond within 24 hours.
Laysun Magnetics