Explore our premium sintered NdFeB magnets engineered to withstand demanding operational environments in robotics and industrial assemblies.
Founded at the turn of the millennium, Zhejiang Laysun Magnetics Ltd. has rapidly evolved from a visionary startup to an industry pacesetter in permanent magnet fabrication. Our state-of-the-art factory, sprawling across 100,000 square meters in the vibrant industrial corridor of Sichuan, serves as the engineering core of our international export network.
We specialize in the research, custom synthesis, and large-scale manufacturing of high-performance sintered NdFeB (Neodymium Iron Boron) materials. Our technical innovations power the next generation of automation—from highly accurate automotive Electric Power Steering (EPS) and brushless DC motors to robotic articulation joints, wind turbine rotors, and aerospace positioning modules.
A comprehensive overview of material dynamics, Chinese supply chain integration, and design strategies for OEM projects.
In modern robotics, performance limits are defined by power density, response times, and thermal efficiency. Sintered Neodymium-Iron-Boron (NdFeB) magnets represent the pinnacle of energy density (ranging up to 52 MGOe), making them indispensable for brushless DC (BLDC) motors, frameless torque motors, and Voice Coil Motors (VCMs) used in robotic arms and automated end-effectors.
By leveraging high remanence (Br) and coercive force (Hcj), engineers can design smaller, lighter motors with higher torque capabilities. For instance, in automated guided vehicles (AGVs) and warehouse cobots, reducing the motor's weight directly translates to lower power draw and longer battery life. Our specialized OEM manufacturing produces custom curved arc magnets and multi-pole rings with micro-tolerances to minimize cogging torque, enabling smooth, vibration-free movements in precision pathing applications.
The manufacturing of advanced permanent magnets is tightly coupled with raw material accessibility and processing capacity. China houses the world's most robust rare earth industrial ecosystem, covering mining, extraction, alloying, sintering, and surface treatment. Operating our production facility in Suining, Sichuan, places Zhejiang Laysun Magnetics Ltd. in a highly advantageous position.
This proximity guarantees direct, unhampered access to critical heavy rare earths like Dysprosium (Dy) and Terbium (Tb). These elements are vital for high-coercivity grades (such as EH and AH classes) that perform without demagnetization at temperatures up to 230°C. By managing everything from powder metallurgy to final surface coating under one roof, we eliminate intermediate supply chain margins, protect against resource volatility, and offer stable pricing models for long-term OEM automation contracts.
Expanding automation systems into North American, European, and Japanese markets demands absolute compliance with international industrial regulations. Our production facilities and processing techniques adhere strictly to certified global standards:
Furthermore, we perform advanced non-destructive testing, including flux density measurements, demagnetization curve analysis (hysteresis graph testing), and salt spray chamber tests to verify that plating finishes can withstand humid, chemical-laden, or marine industrial environments.
To reduce time-to-market, global procurement departments need more than just a component vendor—they require active engineering partners. Zhejiang Laysun Magnetics Ltd. addresses this through cross-border collaboration, providing dedicated local contact channels and robust design verification services. We assist OEM project leads in sizing, orientation optimization (diametrical, axial, or multi-polar radial), and selecting cost-effective material grades. Our engineering office analyzes 3D CAD models, runs simulation tests to estimate thermal behavior, and produces rapid functional prototypes within 7 to 10 days.
How Laysun Magnetics delivers key components for major technological industries.
High-grade NdFeB arc and block segments tailored for planetary gearboxes, frameless motors, and articulate joint controllers requiring reliable positioning and torque retention.
Sintered block magnets designed for driving motors, battery pack holding sensors, and safety steering systems (EPS), providing thermal stability under heavy cyclic stress.
Micro-dimensioned magnetic ring assemblies, custom MagSafe-compatible internal brackets, and highly sensitive speaker diaphragms with strict magnetic field tolerances.
Corrosion-resistant generator rotor magnets with multi-layer protective finishes (Epoxy/Nickel-Copper-Nickel) designed to last decades in harsh marine environments.
Highly precise voice coil motor (VCM) magnets integrated into automated surgical arms, MRI scanning assemblies, and rapid lab diagnostics liquid handlers.
High-capacity magnetic lifting devices capable of securely carrying raw steel blocks and components up to 1000kg without dynamic power input.
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