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If you have any questions regarding ferrite magnets, please visit the ‘Frequently Asked Questions’ section on the Carichi Magnets website, where you’ll find answers to many ferrite-related queries. Today’s question is: Can ferrite magnets be magnetised with multiple poles on a single side? How is this achieved?
First, the answer: ferrite magnets can indeed be magnetised with multiple poles on a single face. This applies to circular, ring-shaped and square magnets, amongst others. We have sample displays on our website, and I will include product links at the end of this article.
In this type of single-face, multi-pole magnetisation, one face of the ferrite magnet features multiple N and S poles; this face exhibits strong magnetism, whilst the opposite face has virtually no magnetic properties.
Single-sided 4-pole ferrite disc magnet
Where are single-sided multipole magnetised ferrite magnets typically used?
To my knowledge, they are mainly used in motor control systems, rotary encoders, Hall sensors, smart home appliances and other such fields.
How is single-sided multipole magnetisation achieved in ferrite magnets?
It requires the use of a specific magnetising coil, which is placed in close contact with the end face of the ferrite, as shown in the image below.
As a supplier of ferrite magnets, our company can provide customers across various industries with standard axial and radial ferrite magnets, as well as multi-pole axial and radial ferrite magnets. Should you require a quotation, samples or have any enquiries, please feel free to contact us via WeChat, telephone or our online customer service.
A magnet with multiple magnetic poles on only one face;
Single sided 8 poles injection molded ferrite ring 25x8x5mm
2N2S 4-pole axial single-sided multi-pole ferrite ring 17mm x 4.5mm
Single sided 128 poles and 126 poles magnetic encoder ring magnet
This is a very small rectangular ferrite block magnet, measuring 2.45 mm in length and 1 mm in both width and height. It is magnetised along its length and is barely noticeable when held in the hand....
7.4x6x5mm Ferrite Small Block Magnet Introduction，Material: Hard Ferrite (Ceramic)，Shape: Block / Rectangle / Bar，Coating: No Coating，Grade (Chinese Stardard): Y30，Operating temperature: -40°C to 250°C，Delivery time: 7-15 days，Magnetization direction: thickness....
U-shaped neodymium magnets are a type of high-performance permanent magnet material with a structure resembling the letter ‘U’. Manufactured from sintered neodymium-iron-boron, they are characterised by high magnetic energy product....
This is a radial 4-pole ring (Hollow cylinder) magnet, the material is bonded NdFeB, with high magnetic performance, the size is 16mm outer diameter, inner hole 5mm, height 20mm, surface gray epoxy treatment, suitable for water pump motor...
This product is a 4-pole ring magnet, injection-molded ferrite material, the sample size is 22mm outer diameter, 7mm inner diameter, 4mm thickness, 2 N poles and 2 S poles, mainly used for push rod motors, magnetic induction devices, encoders, etc.,...
This is a radial 2 pole circular magnet designed specifically for magnetic encoder chips. It is made of sintered neodymium-iron-boron with N35 grade performance and is suitable for standard environments....
This product is a multi pole magnetic ring with an inner diameter of 1.5mm. The material is injection molded ferrite. It adopts axial multi pole magnetization and is mainly used for DC motors. If you have a sample of similar injection molded magnetic products, please contact us for quotation....
This is a very small size rectangular block magnet with galvanized surface, 3mm length, 1.5mm width and height, with very fine tolerance, magnetized by lengthwise direction, mainly used in precision electronics, instrumentation, please contact us if you need to buy....