Ferrite Ring Magnet - SDM Magnetics Co., Ltd.

Ι What Is Ferrite Ring Magnet?

Ferrite magnets, also referred to as ceramic magnets or hard ferrites, are non-metallic permanent magnets crafted from Iron Oxide (Fe₂O₃), Barium Carbonate (BaCO₃), or Strontium Carbonate (SrCO₃) as primary raw materials. Produced through a powder metallurgy process, these magnets are recognized for their affordability, moderate magnetic strength, and exceptional corrosion resistance, making them highly suitable for applications where cost-efficiency and long-term durability are prioritized across various industries.

A ferrite ring magnet, one of the simplest ferrite magnet shapes, features a round, flat design with a central hole for versatile use. Measured by outside diameter (O.D.), inside diameter (I.D.), and thickness (T.), a ferrite ring magnet is efficient in applications such as holding systems, permanent magnet motors, speakers, and sensors, offering reliable performance across diverse sectors worldwide.

Magnetization Directions of Ferrite Magnet

A ferrite ring magnet is typically magnetized axially or diametrically, with its magnetization pattern customized for specific applications. Simple axially magnetized ferrite ring magnets are mainly used in speakers and certain holding systems, while axially multipole ones suit sensor devices. Most diametrically multipole ferrite ring magnets serve permanent magnet motors, though some support sensing applications, and they can also be magnetized radially or skewed for specialized uses.