High Performance Ceramic Arc Magnets

We manufacture high-performance, industrial-grade ceramic arc magnets (also known as ferrite arc magnets) for electric motor manufacturers, pump assembly lines, and OEM component distributors worldwide. Built from strontium-based hard ferrite compositions (SrO*6Fe2O3), these permanent magnets are engineered for continuous-duty applications requiring superior thermal stability, chemical inertness, and cost-effective volume scaling.

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High-Performance Ceramic Arc Magnets | Industrial Grade Ferrite Solutions

Technical Specifications & Magnetic Performance
Our standard and high-energy ferrite grades are optimized for consistent magnetic flux output and structural reliability under heavy mechanical vibration and thermal stress.

Property	Typical Value	Technical Implication
Material Composition	Strontium Ferrite (SrO*6Fe2O3)	Chemically stable, oxidation-resistant ceramic matrix
Remanence (Br)	3800 – 4300 Gauss	Delivers predictable, stable magnetic field density in air gaps
Coercive Force (Hcb)	3000 – 4000 Oe	Resists demagnetization from external magnetic fields
Intrinsic Coercive Force (Hcj)	3500 – 5000 Oe	Prevents irreversible magnetic loss during high-load motor surges
Maximum Energy Product ((BH)max)	3.3 – 4.5 MGOe	Balanced magnetic output for mid-range and high-efficiency electric motors
Max Operating Temperature	Up to 250°C	Withstands sustained thermal buildup without structural breakdown
Density	4.8 – 5.1 g/cm3	Lightweight structural integration for high-speed rotors

Core Engineering Advantages

Thermal Stability in Continuous-Duty Motors
Motor operating heat causes magnetic degradation in low-grade materials. Our advanced ferrite formulations feature a low reversible temperature coefficient, ensuring stable magnetic flux output during sustained thermal loads up to 250°C in HVAC blowers, industrial pumps, and traction motors.

Natural Corrosion Resistance Without Electroplating
Because strontium ferrite is a ceramic oxide rather than a metal alloy, the material does not oxidize or rust in humid environments.

Operational Benefit: Eliminates the need for costly nickel, zinc, or epoxy protective coatings.

Application Impact: Completely removes the risk of coating flaking, blistering, or galvanic corrosion in water pumps, outdoor actuators, and automotive auxiliary systems.

Dimensional Precision for Air-Gap Control
Inconsistent arc radii lead to uneven motor air gaps, causing torque ripple, noise, and vibration. Our precision dry-pressing and high-temperature sintering (>1200°C) maintain strict tolerances on inner diameter (ID), outer diameter (OD), and arc angle, reducing assembly adjustment time on automated production lines.

Cost-Effective Scaling for High-Volume OEM Programs
Utilizing abundant iron oxide and strontium raw materials, these magnets offer a highly stable supply chain and a significantly lower bill-of-materials cost compared to neodymium-iron-boron (NdFeB) alternatives, making them the optimal choice for high-volume appliance and automotive manufacturing.

Global Compliance & Quality Assurance

To meet the rigorous demands of international automotive and industrial supply chains, our manufacturing and quality management processes fully adhere to global standards:

Quality Certifications: Certified under ISO 9001 and IATF 16949 (stringent quality management for automotive production).

Environmental Directives: Fully compliant with RoHS and REACH regulations regarding restricted hazardous substances.

Rigorous Testing: Every production lot undergoes precise dimensional profiling, 100% flux output testing (using Helmholtz coils), and visual inspection prior to secure export packaging.

Customization Capabilities for OEM Projects

We custom-engineer arc magnets to perfectly match your motor stator geometries and magnetic circuit designs.

Dimensional Parameters: Custom radii, chord lengths, thicknesses, and span angles fabricated directly from your CAD drawings, 3D models, or technical specifications.

Polarity & Magnetization Patterns:

Through-thickness magnetization
Radial orientation (Anisotropic)
Multi-pole segmented configurations

Application Matrix

Electric Motors: DC permanent magnet motors, brushless DC (BLDC) motors, and high-efficiency starter motors.

Automotive Actuators: Seat adjustment motors, power window drives, and cooling fan assemblies.

Fluid Dynamics: Submersible water pumps, circulation pumps, and HVAC blower assemblies.

Industrial Equipment: Magnetic couplings, eddy-current brakes, and auxiliary power generators.

FAQ

Q: What are ceramic arc magnets made of?

A: Ceramic arc magnets are manufactured from hard ferrite materials, primarily composed of iron oxide combined with strontium or barium compounds. This ceramic crystal structure provides exceptional corrosion resistance and long-term magnetic stability.

Q: Are ceramic arc magnets suitable for electric motors?

A: Yes. They are widely used in DC motors, brushless motors, fans, pumps, and generators because their custom arc geometry fits seamlessly into curved motor housings while delivering a stable, reliable magnetic field.

Q: What is the maximum working temperature of ceramic arc magnets?

A: Our high-performance ceramic arc magnets can operate continuously at temperatures up to approximately 250°C, depending on the specific magnetic grade and operational environment.

Q: Do ceramic arc magnets need a surface coating?

A: Generally, no. Unlike rare-earth or metallic magnets (such as NdFeB or Alnico), ferrite ceramic magnets naturally resist rust and oxidation, making secondary surface coatings unnecessary for standard or humid environments.

Q: Can you manufacture custom ceramic arc magnets?

A: Yes. We specialize in OEM/ODM custom manufacturing based on your blueprints or technical data, including custom dimensions, span angles, magnetic grades, and tailored magnetization directions.

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