Explore our high-performance NdFeB magnetic configurations designed for extreme environmental durability, high holding forces, and optimized magnetic paths.
Founded at the turn of the millennium in 1999, Zhejiang Laysun Magnetics Ltd. has evolved from an ambitious engineering team into a globally recognized benchmark for custom NdFeB Magnet Assemblies. We supply critical industries worldwide from our advanced, sprawling manufacturing base of 100,000 m² located in Suining, Sichuan.
By specializing in the design, optimization, and volume export of high-performance rare earth magnetic circuits, we help our partners navigate complex engineering requirements. Whether you are engineering traction motors for Electric Vehicles, high-response actuators for aerospace drones, or compact components for consumer devices, Laysun Magnetics provides structural integrity and reliable magnetic performance.
Driving magnetic boundaries forward through cutting-edge Grain Boundary Diffusion, high-precision assembly lines, and FEA-validated magnetic path design.
Standard NdFeB alloys face severe degradation when operational temperatures exceed 80°C. To address the demands of high-rpm electric vehicle drivetrains and wind generators, our technical roadmap prioritizes Grain Boundary Diffusion (GBD) technology. GBD allows us to selectively diffuse heavy rare earths (Dysprosium, Dy, or Terbium, Tb) into the magnet's crystal interfaces. This method preserves a high remanence (Br) while increasing the intrinsic coercivity (Hcj), saving material costs and reducing reliance on scarce heavy metals.
Our engineering laboratory utilizes 3D Finite Element Analysis (FEA) to simulate flux distribution, leakage parameters, and demagnetization stress. By optimizing the metal backing plates and flux-focusing sleeves (such as Halbach arrays), we deliver assemblies that offer up to 40% higher structural efficiency than standard raw magnet groupings.
Reduces the required volume of Dy/Tb by up to 70% while supporting operational temperatures exceeding 220°C. Perfect for compact EV drivetrains and aerospace servos.
Custom-engineered structural housings designed to focus magnetic flux on one face while reducing magnetic leakage on the reverse side to near-zero levels.
We use high-temperature, impact-resistant structural acrylics and heat-cured epoxies, combined with precision surface prep, to prevent adhesive failure under mechanical stress.
Equipped with state-of-the-art CNC, grinding, and automated assembly units, achieving tight mechanical tolerances within ±0.005mm for complex multi-pole rotors.
Delivering high-reliability magnetic sub-assemblies tailored to satisfy strict industry parameters across modern automation and green tech sectors.
Industrial robotic arms and joints require high angular accuracy and compact torque density. Our custom rotor assemblies support high motor speeds with zero cogging torque, enabling smooth movements.
Weight reduction is critical for UAV flight times. We produce extremely lightweight, high-rpm outrunner rotor sleeves containing custom segmented arc magnets designed for drone propulsion.
Designed for severe thermal cycles and mechanical vibrations, our automotive-grade rotor segments meet rigorous IATF 16949 parameters to deliver consistent performance over time.
Handheld equipment demands high drop-proof resilience and continuous overload protection. Our encapsulated magnet assemblies maintain holding power despite severe vibration.
From magnetic accessories like ring assemblies for smartphones to precise voice coil motors (VCM) for high-end optical zoom systems, we supply compact, micro-scale components.
Modern household appliances rely on brush-less DC motors for energy efficiency. Our cost-effective, high-volume magnetic rotors help appliance OEMs meet strict international energy ratings.
Global supply networks face constant disruptions, making consistency and raw material security vital for OEMs. Located near abundant rare-earth sourcing regions, Zhejiang Laysun Magnetics Ltd. provides vertical integration that covers raw material blending, vacuum induction melting, sintering, machining, surface treatment, and final assembly.
Our Suining factory features intelligent, automated manufacturing lines. Fully automated robotic workstations handle the magnet charging and assembly processes, minimizing human error and potential damage during manufacturing. This level of automation keeps our production rates consistent and enables us to handle large-scale orders efficiently.
Optimizing procurement processes through transparent raw material indexing, precise customization, and reliable shipping protocols.
We work to reduce overall procurement costs by using optimized structural designs and high-yield automated manufacturing processes to keep prices competitive.
Magnetic components require specialized packing for air and ocean freight. Our shipping containers are equipped with custom magnetic shielding materials to comply with IATA safety standards.
We support various delivery terms including FOB, CIF, DDU, and DDP. Our logistics team handles customs compliance to ensure smooth delivery straight to your warehouse.
API 6D, API 607, ISO 9001 Compliant
Our quality assurance program is designed to deliver consistent manufacturing performance. We maintain certifications including API 6D, API 607, CE, ISO 9001, ISO 14001, and ISO 18001 (OHSAS). Every batch of rare earth magnets undergoes magnetic flux, dimensional tolerance, and surface plating tests before dispatch.
To support global supply chains, our raw materials are certified compliant with RoHS and REACH standards. We also adhere to Conflict Minerals guidelines, helping international buyers meet ESG reporting requirements.
Engineered to withstand demanding environments, our magnet assemblies offer high holding force, dynamic flux distribution, and long-term durability.
Critical design and manufacturing insights to guide engineering and sourcing decisions.
Raw permanent magnets are brittle and prone to structural cracking. A customized magnet assembly protects the magnet with steel sleeves or frames, which also redirect and focus the magnetic flux. This structure improves mechanical strength and increases the effective holding force on active contact areas by up to 2-4 times compared to a bare magnet.
We test our assemblies using salt spray exposure (SST) for plating life, thermal cycling to check adhesive strength under heat stress, and push-pull force testing. Hysteresis graphs verify coercivity (Hcj) levels, confirming that assemblies operate within thermal limit guidelines without significant magnetic loss.
Triple-layer Nickel-Copper-Nickel (Ni-Cu-Ni) electroplating is the standard choice. For harsh outdoor or marine environments, we recommend thick epoxy coatings, rubber insulation, or Everlube treatments to protect the magnets from oxidation.
Yes. We produce high-purity assemblies in cleanrooms, utilizing specialized non-outgassing structural adhesives and titanium or high-grade stainless steel housings for medical devices and aerospace applications.
Custom tooling and prototype validation typically take 15 to 21 days. Once samples are approved, high-volume production generally requires 25 to 35 days, depending on raw material specifications and tooling complexity.
We verify multi-pole rotor positions using high-resolution optical scanners and coordinated measuring machines (CMM). Dynamic balancing tests are performed at rated operating speeds to minimize vibration and runout in final applications.
Laysun Magnetics
