Explore high-coercivity, precision-engineered rare earth magnetic components direct from our ISO9001 & IATF 16949 certified manufacturing lines.
Zhejiang Laysun Magnetics Ltd. provides cost-optimized, high-energy NdFeB 30mm magnets backed by quarter-century rare-earth metallurgical experience.
In modern electromechanical engineering, the 30mm dimension (spanning 30mm diameter discs, 30mm x 30mm square blocks, 30mm outer diameter rings, and customized 30mm segment magnets) represents a critical "sweet spot" for flux output versus spatial footprint. Procurement teams searching for high-performance yet cheap Neodymium Magnet 30mm manufacturers and companies face a complex trade-off between raw material cost, magnetic stability, temperature resistance, and corrosion protection.
At Zhejiang Laysun Magnetics Ltd. (headquartered in Hangzhou, with a mega production facility in Suining, Sichuan), we eliminate this dilemma. By integrating direct rare-earth alloy sourcing, automated powder metallurgy sintering, and advanced Grain Boundary Diffusion (GBD) technology, we supply top-tier 30mm Neodymium magnets at factory-direct pricing to Fortune 500 enterprises and OEM integrators worldwide.
Comprehensive magnetic classification, physical tolerances, and metallurgical characteristics for design engineers.
| Magnet Grade | Remanence ($B_r$) [Tesla / KGauss] | Coercivity ($H_{cb}$) [kA/m / kOe] | Intrinsic Coercivity ($H_{cj}$) [kA/m / kOe] | Max Energy Product ($(BH)_{max}$) [MGOe] | Max Working Temp (°C) |
|---|---|---|---|---|---|
| N35 - N52 | 1.17 - 1.48 T / 11.7 - 14.8 kG | ≥ 868 kA/m / ≥ 10.9 kOe | ≥ 955 kA/m / ≥ 12.0 kOe | 33 - 53 MGOe | 80 °C (176 °F) |
| N35M - N50M | 1.17 - 1.43 T / 11.7 - 14.3 kG | ≥ 875 kA/m / ≥ 11.0 kOe | ≥ 1114 kA/m / ≥ 14.0 kOe | 33 - 50 MGOe | 100 °C (212 °F) |
| N33H - N48H | 1.14 - 1.40 T / 11.4 - 14.0 kG | ≥ 836 kA/m / ≥ 10.5 kOe | ≥ 1353 kA/m / ≥ 17.0 kOe | 31 - 48 MGOe | 120 °C (248 °F) |
| N30SH - N45SH | 1.08 - 1.36 T / 10.8 - 13.6 kG | ≥ 796 kA/m / ≥ 10.0 kOe | ≥ 1592 kA/m / ≥ 20.0 kOe | 28 - 45 MGOe | 150 °C (302 °F) |
| N28UH - N40UH | 1.02 - 1.30 T / 10.2 - 13.0 kG | ≥ 764 kA/m / ≥ 9.6 kOe | ≥ 1990 kA/m / ≥ 25.0 kOe | 26 - 40 MGOe | 180 °C (356 °F) |
| N28EH - N38EH | 1.02 - 1.26 T / 10.2 - 12.6 kG | ≥ 748 kA/m / ≥ 9.4 kOe | ≥ 2387 kA/m / ≥ 30.0 kOe | 26 - 38 MGOe | 200 °C (392 °F) |
Utilizing high-precision diamond wire cutting and CNC double-disc grinding, our 30mm magnets maintain ultra-tight dimensional tolerances down to ±0.03mm on thickness and ±0.05mm on diameter.
Protection options include triple-layer Ni-Cu-Ni (Nickel-Copper-Nickel), Black Epoxy, Rubber Coating, Zinc (Zn), and Gold plating tested up to 96 to 500 hours under ASTM B117 salt spray testing.
Available in axial magnetization, diametrical magnetization, multi-pole radial ring patterns, and customized skew magnetization tailored specifically for motor stator/rotor assemblies.
Why Zhejiang Laysun Magnetics Ltd. provides unmatched cost-efficiency for wholesale 30mm Neodymium magnet procurement.
The global magnet market is heavily influenced by raw material price volatility, specifically Praseodymium-Neodymium (PrNd), Dysprosium (Dy), and Terbium (Tb). Zhejiang Laysun Magnetics mitigates pricing risk for global buyers through key strategic levers:
From Electric Power Steering (EPS) to magnetic holding fixtures, discover where custom 30mm magnets deliver vital performance.
30mm segment and arc NdFeB magnets are standard components in Automotive Electric Power Steering (EPS) sensors and drive motors, operating under high thermal stresses (up to 180°C).
Compact joint actuators in articulated industrial robots use 30mm outer diameter ring magnets to maximize torque density and dynamic responsiveness in tight spaces.
Commercial UAV brushless motors utilize lightweight N52/N50H 30mm curved magnets to maximize thrust-to-weight ratios and extend battery flight times.
Cordless drills, impact drivers, and saws require high-grade pot magnets and block magnets to maintain rotational torque under heavy mechanical loads.
Precision ring arrays with 30mm pitch dimensions are deployed in magnetic wireless charging modules, laptop latches, and high-fidelity audio Voice Coil Motors (VCM).
Encapsulated 30mm pot magnets and multi-magnet lifter arrays provide steel fabrication yards with reliable holding forces up to 1000kg without electricity.
Zhejiang Laysun Magnetics Ltd. operates under strict international quality control systems. Every production batch of 30mm Neodymium magnets undergoes BH curve testing, ICP raw material analysis, and optical laser dimension checks.
Our global offices and supply logistics network headquartered in Hangzhou ensure fast RFQ turnaround times (<24 hours) and seamless door-to-door DDP shipments across Europe, North America, Southeast Asia, and the Middle East.
Expert answers on technical selection, magnetic pull calculation, pricing structure, and factory sourcing.
Select from our extended catalog of industrial magnet lifters, OEM EV blocks, VCM magnets, and Magsafe components.
Partner with Zhejiang Laysun Magnetics Ltd. to secure direct manufacturer pricing, ISO9001/IATF16949 quality assurance, and robust global delivery support within 24 hours.
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