Explore our leading selection of custom sintered NdFeB magnets, magnetic assemblies, and OEM magnetic components built to strict industrial specifications.
Permanent magnets—specifically sintered neodymium-iron-boron (NdFeB) and samarium-cobalt (SmCo) alloys—represent the cornerstone of modern industrial electrification and green energy transformation. In the era of the global carbon neutrality push, the commercial market value of rare-earth magnets has experienced explosive growth. According to current industrial studies, permanent magnets account for the high-efficiency performance of more than 90% of electric vehicle traction motors, industrial robotics, wind power generators, and state-of-the-art consumer appliances.
As the world transitions from internal combustion engines to battery electric propulsion systems, the demand for high-coercivity (Hcj) magnets featuring dysprosium (Dy) and terbium (Tb) heavy rare-earth additives has escalated. These elements prevent thermal demagnetization in high-stress, high-temperature motor enclosures. Industrial buyers are prioritizing suppliers capable of providing stable chemical formulations, superior thermal resilience, and guaranteed magnetic flux consistency over large manufacturing cycles.
Founded in 1999, Zhejiang Laysun Magnetics Ltd. has evolved from an ambitious high-tech startup into a national vanguard in rare earth magnet manufacturing. Our modern, sprawling 100,000-square-meter manufacturing facility in Suining, Sichuan, serves as the engineering hub where over 300 skilled professionals fabricate advanced NdFeB magnets, pot magnets, and specialized magnetic fixtures. With an annual capacity of 5,000 tons of rare earth materials, we provide comprehensive services from raw material sintering to precision machining and coating.
China produces approximately 85% to 90% of the world’s sintered neodymium magnets. This dominance is not simply a matter of resource concentration; it is driven by profound vertical integration, process engineering advantages, and logistical clusters. From primary mining and mining separation in Sichuan and Inner Mongolia to secondary processing, machining, plating, and testing—the entire value chain is located in close proximity. This drastically reduces transit times and prevents oxidation risks of intermediate raw materials.
Our factories benefit from direct access to rare earth extraction and separation facilities, insulating our international clients from raw material shortages and volatile global price swings.
Utilizing strip casting, hydrogen decrepitation (HD), and vacuum induction melting furnaces, we ensure micro-crystalline structural uniformity with minimized heavy rare earth usage.
Equipped with high-precision wire EDM, coreless grinding machines, and automatic optical sorting equipment, we guarantee dimensional tolerances as tight as ±0.01mm.
Our comprehensive catalog spans high-energy NdFeB block, disc, cylinder, ring, and custom arc segment magnets tailored to industrial requirements.
Our materials power advanced systems in six industrial verticals, ensuring stable performance under severe thermal and mechanical stresses.
High torque-to-weight ratios are essential for joint servo motors. Our high-grade N52 and N50SH sintered NdFeB segments deliver high power densities for cobots.
Outrunner brushless motors for drones require lightweight, high-temperature magnets. We manufacture customized curved magnets that reduce cogging torque and enhance flight times.
From drive motors to Electric Power Steering (EPS) systems, Laysun NdFeB magnets provide long-term magnetic flux stability at operating temperatures exceeding 150°C.
Industrial drills, angle grinders, and demolition tools require compact permanent magnet motors with excellent resistance to mechanical shock and vibrations.
Providing micro-sized disc and ring magnets for smartphones, MagSafe peripherals, acoustic drivers, and voice coil motors (VCM) for optical image stabilization.
Powering energy-efficient compressor motors in domestic HVAC units, refrigerator pumps, and smart locks with high remanence and long lifetime performance.
The permanent magnet industry is shifting toward environmental compliance, reduced dependency on scarce heavy rare-earths, and closed-loop recycling. Modern research is focused on grain boundary diffusion (GBD) technology. GBD allows dysprosium or terbium to be diffused along the grain boundary junctions rather than distributed evenly throughout the entire NdFeB crystal matrix. This process allows manufacturers to increase the magnet’s thermal performance (coercivity) without compromising its remanence (remanent magnetization), while using up to 70% less heavy rare-earth additives.
Simultaneously, industrial buyers are requiring comprehensive supply chain tracing and green footprint auditing. Carbon verification from raw material processing to final shipment is becoming a primary metric for Tier 1 automotive suppliers. Laysun Magnetics complies with REACH, RoHS, and modern environmental criteria to support carbon reduction goals.
Headquartered in Hangzhou, China, Eneroc and Laysun Magnetics are building worldwide subsidiaries and offices to support our customers across North America, Europe, and Asia-Pacific. Below is our key logistics and facility layout:
We hold certifications including API 6D, API 607, CE, ISO9001, ISO14001, ISO18001, and TS specifications. Contact us directly to receive copy of our quality audits.
Procuring neodymium permanent magnets at an industrial scale requires evaluating specific technical parameters to avoid project delays, performance issues, or mechanical failures. Standard purchase specifications include:
Understand the distinction between standard (N35–N52), medium (M), high (H), super (SH), ultra-high (UH), extreme-high (EH), and anomalous (AH) thermal grades. While N52 provides high room-temperature flux density, its maximum operating temperature is 80°C. An N45SH grade operates reliably at temperatures up to 150°C.
Ensure your supplier provides batch-specific demagnetization hysteresis curves (B-H curves) demonstrating magnetic performance at room temperature and the target operating temperature. Key parameters include remanence (Br), coercivity (Hcb), intrinsic coercivity (Hcj), and maximum energy product (BHmax).
Sintered NdFeB is prone to oxidation. Select a coating based on environmental exposure: multi-layer Ni-Cu-Ni, passivation, Zn plating, epoxy resin coating, or parylene encapsulation. Specify Salt Spray Testing (SST) duration requirements (e.g., 24h, 48h, 96h, or up to 240h for marine environments).
Precise dimensional control prevents assembly clearance issues. Our standard grinding tolerance is ±0.05mm, with tolerances as tight as ±0.01mm available for precision applications. Ensure geometric dimensioning and tolerancing (GD&T) specifications match your design requirements.
Technical answers to key permanent magnet procurement, engineering, and manufacturing questions.
Partner with Zhejiang Laysun Magnetics Ltd. for technical precision and cost-effective bulk production.
For inquiries about our custom permanent magnets, engineering specifications, or bulk pricing lists, contact us. We will get in touch with you within 24 hours.
Laysun Magnetics