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Round Disc Ferrite Magnets

Round ferrite magnets are sintered permanent ferrite magnets manufactured by high-temperature sintering of raw materials including iron oxide and strontium carbonate. They feature neat disc and round sheet structures.
Grades of Magnetic Performance:Y10/Y25/Y30/Y33/Y35
Dimensions & Specifications:Custom OD & thickness, in stock standard sizes & custom precision grinding supported
Surface Coatings:Normally uncoated
Operating Temperature:≤250℃

Product Details

Round ferrite magnets are mainly manufactured into disc and round sheet shapes, with dimensions defined by outer diameter and thickness. They feature even magnetic field distribution and flat contact surfaces for magnetic attraction.

Despite their lower magnetic energy product compared with NdFeB and SmCo magnets, they offer outstanding cost performance, superior corrosion resistance and excellent temperature stability. They will not oxidize or rust and require no electroplating protection. Hard and wear-resistant, these magnets adapt to long-term continuous operation and complex industrial working conditions, serving as the preferred basic permanent magnetic material for home appliances, motors, hardware fixation and general magnetic attraction structures.

Magnet Magnetization Direction: Customizable to match equipment magnetic circuit structures and assembly methods.

圆形铁氧体磁铁

1. Material Composition

Raw inorganic materials including iron oxide, strontium carbonate and barium oxide are mixed in fixed proportions, then processed through crushing, powder making, compression molding and high-temperature sintering for forming.

Stable formula creates dense material with consistent magnetic performance. The magnets resist acid, alkali and aging, and feature an ultra-long service life.

2. Product Classification

Two types available: standard round ferrite magnets and high-precision ground round ferrite magnets.

  • Standard type: cost-effective for general fixing applications.

  • Precision ground type: superior flatness and dimensional accuracy, ideal for precision motors, sensors and accurate magnetic assembly.

3. Production Process

Raw material mixing → fine crushing & powder preparation → mold pressing into round blanks → high-temperature sintering shaping → surface precision grinding & chamfering → dimensional sorting → magnetization & performance testing → finished product packaging.

Precision processing such as surface grinding, chamfering and polishing is supported.

4. Surface Treatment

Ferrite owns inherent rust and corrosion resistance; raw black sintered blanks can be directly used without electroplating or coating. For extremely humid working environments, simple passivation treatment is optional to avoid oxidation and peeling.

5. Main Applications

Small DC motors, fan motors, household appliance motors, speaker magnetic circuits, door & window magnetic catches, magnetic hardware bases, instrument sensors, magnetic teaching aids, auxiliary positioning for machinery, magnetic fixtures for automation equipment, magnetic toy parts and more.

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