Explore our industrial-grade round permanent magnets, optimized for high coercivity, superior thermal stability, and maximum energy density.
Empowering global engineering through pioneer rare earth magnetics technology since 1999.
Established at the turn of the millennium, Zhejiang Laysun Magnetics Ltd. has evolved from a progressive R&D hub into a globally recognized national high-tech manufacturing leader. Strategically headquartered with a production base expanding over 100,000 square meters, we maintain a highly specialized workforce of 300+ professional engineers, technicians, and manufacturing specialists. Our annual output capacity of premium-grade sintered Neodymium (NdFeB) magnets reaches 5,000 tons.
We are dedicated to advanced materials research, structural manufacturing, surface treatment engineering, and strict quality verification. Our strategic solutions deliver custom-dimension round magnets (discs, rings, tubes, and complex concentric assemblies) that meet the strict requirements of electric mobility, industrial robotics, precision electronics, and clean energy systems.
High-performance round permanent magnets, particularly those based on the Nd2Fe14B tetragonal crystalline structure, represent the pinnacle of modern magnetics technology. These components provide high energy density relative to their volume, allowing engineers to reduce the footprint of electric motors, actuators, acoustic transducers, and sensor arrays. Choosing the correct industrial partner requires a deep understanding of structural metallurgy, coating durability, and thermal demagnetization resistance.
The transition toward electrification has driven demand for high-grade rare earth permanent magnets. Industrial round magnets (discs and rings) are critical to this demand, functioning as rotor components in electric vehicles (EVs) and stator assemblies in wind power generators. Additionally, the regional distribution of raw earth mining and processing makes secure material sourcing critical for global buyers.
Zhejiang Laysun Magnetics Ltd. mitigates supply chain risks by maintaining direct partnerships with domestic raw material refineries. Our facility in Sichuan handles every stage of production—from raw powder alloy preparation, pressing under high-gradient magnetic fields, sintering in vacuum induction furnaces, to precision grinding and surface finish deposition. This full vertical integration ensures stable lead times and consistent magnetic flux alignment across large-volume production runs.
Selecting a supplier requires balancing magnetic properties against working environmental conditions. Thermal demagnetization is a primary failure point in heavy machinery; using grades with appropriate Intrinsic Coercivity (Hcj) prevents degradation at elevated operating temperatures.
| Magnet Grade Family | Remanence (Br) - kG | Coercivity (Hcb) - kOe | Intrinsic Coercivity (Hcj) - kOe | Max Working Temperature |
|---|---|---|---|---|
| N35 - N52 (Standard) | 11.7 - 14.8 | ≥ 10.8 | ≥ 12.0 | 80°C / 176°F |
| N35M - N50M (Medium Temp) | 11.7 - 14.3 | ≥ 11.1 | ≥ 14.0 | 100°C / 212°F |
| N35H - N48H (High Temp) | 11.7 - 13.9 | ≥ 11.4 | ≥ 17.0 | 120°C / 248°F |
| N35SH - N45SH (Super High) | 11.7 - 13.5 | ≥ 11.6 | ≥ 20.0 | 150°C / 302°F |
| N30UH - N40UH (Ultra High) | 10.8 - 12.8 | ≥ 10.5 | ≥ 25.0 | 180°C / 356°F |
| N28EH - N38EH (Extra High) | 10.4 - 12.5 | ≥ 10.1 | ≥ 30.0 | 200°C / 392°F |
| N28AH - N35AH (Max Temp) | 10.4 - 11.7 | ≥ 9.8 | ≥ 35.0 | 220°C / 428°F |
Our 100,000 m² factory operates automated lines for raw material processing, alloy pressing, sintering, and post-machining. Sintering is conducted under protective gas or vacuum atmospheres to prevent the oxidation of active neodymium elements. Precise dimensional tolerance control is maintained using advanced wire-cutting, double-side grinding, and mechanical core drilling tools.
Developing magnetic solutions that solve engineering challenges across clean energy, robotics, consumer electronics, and automotive industries.
Frameless servo motors and multi-axis articulation joints demand compact, lightweight magnetic components. Our customized NdFeB ring magnets provide high angular torque density, allowing rapid acceleration and high-precision positioning in industrial robotic arms.
Aerospace and UAV propulsion systems require highly balanced magnetic fields to run efficiently. We manufacture high-uniformity ring magnets for brushless outrunner motors, minimizing torque ripple and heat generation during long flight missions.
Electric power steering (EPS) motors demand highly reliable permanent magnets. Our NdFeB rotor segments and ring configurations operate stably under continuous vibrations and temperatures exceeding 150°C.
High-torque cordless drills and industrial saws require impact-resistant magnetic motor components. We supply NdFeB magnets encapsulated in structural epoxy coatings to handle high centrifugal forces and mechanical stress.
Smartphones, haptic feedback actuators, and magnetic accessories require thin, low-profile magnetic rings. We offer thin-walled NdFeB rings with precise magnetic pole counts for consumer consumer electronic applications.
From variable-frequency compressor motors in smart refrigerators to linear actuators in HVAC systems, our magnets help reduce power consumption and acoustic noise levels in modern home appliances.
Precision-made NdFeB round configurations, surface coatings, and specific assemblies engineered for international quality standards.
Because sintered rare earth materials contain high concentrations of iron and neodymium, they are naturally susceptible to atmospheric oxidation and chemical corrosion. To prevent structural failure in harsh environments, choosing the correct coating chemistry is critical.
Zhejiang Laysun Magnetics Ltd. provides customized surface treatments, including multi-layered Nickel-Copper-Nickel (Ni-Cu-Ni), electrodeposited Black Epoxy, Passivation films, and protective Outer Rubber or Stainless Steel casings. In marine and highly humid environments, our multi-layered Ni-Cu-Ni plating provides excellent salt spray resistance, passing standardized 96-hour testing and extending the operational life of the magnets.
To address the rising cost of Heavy Rare Earth Elements (HREEs) like Dysprosium (Dy) and Terbium (Tb), our R&D team has implemented advanced Grain Boundary Diffusion (GBD) technology. By diffusing Dy or Tb compounds selectively into the grain boundaries of the sintered magnet rather than distributing them throughout the crystal grain, we achieve high intrinsic coercivity (Hcj) while minimizing remanence (Br) loss. This approach reduces raw material dependency and lowers the cost of thermal-resistant magnets.
Our global supply chain network serves customers across Europe, North America, and Southeast Asia.
Our quality system is verified by international standards, ensuring consistent tolerances and magnetic alignment across every batch.
Zhejiang Laysun Magnetics Ltd. maintains certified compliance under international standardizations including ISO 9001:2015 for quality management, ISO 14001:2015 for environmental systems, and IATF 16949 for automotive manufacturing. Our products meet global environmental directives, including RoHS and REACH regulations, ensuring safe integration into consumer electronics and medical devices.
ISO 9001 Certification
ISO 14001 System
IATF 16949 Standard
Common questions from design engineers and procurement departments regarding round permanent magnets.
Explore our specialized range, including rubber-coated mountings, high-strength hooks, and thin-profile rings for mobile applications.
Zhejiang Laysun Magnetics Ltd. provides magnetic analysis, prototype simulation, and high-volume manufacturing solutions. Contact us for direct wholesale pricing and technical documentation.
Submit your specifications, drawings, and quantity requirements. Our engineering team will respond within 24 hours.
Contact Factory Direct
Laysun Magnetics
