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Arc magnets are mainly used in various DC motors, such as brushless DC motors, permanent magnet DC motors, etc., and magnets are indispensable. So what are the main arc magnet materials used in motors? What are the advantages? Please read on.
Strong magnetic force, can keep the power unchanged, reduce the size of the motor, the starting current is also small, and it is not easy to stall (ie overload). Generally, the temperature resistance H level and above are used.
2. Ferrite arc segmented magnet
It has the advantages of low price, high magnetic permeability, high temperature resistance, and not easy to demagnetize. The proportion of ferrite magnetic tiles in the motor is also large.
3. Bonded NdFeB magnetic tile
Bonded NdFeB magnetic tile is also a kind of magnetic tile, but it is made of bonded NdFeB material, and there are few customers. At least I haven't come across it yet.
4. Samarium cobalt magnetic tile
Samarium cobalt magnetic tiles are mainly used in some high-end motors, with a temperature resistance of up to 300 ℃, and the price is relatively expensive, and most of them are replaced by neodymium arc magnets.
Arc magnets can also be punched, see: Perforated counterbore arc neodymium magnet
At present, the customers on the market are mainly neodymium arc bending magnets and ferrite bending magnets. The production of neodymium arc magnets does not require molds, but ferrite arc magnets do (except for molds). Customers are welcome to provide size consultation. price, sample.
Introduction to related arc magnet articles;
How to custom arc magnets? What should we pay attention to?
You are now seeing the specifications of this magnet ring OD 13mm, bore diameter 8mm, thickness of 3.5mm, the surface of the black epoxy, due to the reason of the photo may look like a ferrite, the actual bonded ring magnets, suitable for a variety of types of motor, sensor, and electric appliances....
Neodymium iron boron is divided into sintering, bonding and injection molding according to the different production processes. The general neodymium arc magnet is sintered, also called sintered arc neodymium magnet. Today this product is a bonded arc magnet that is not much used. The difference between sintered arc magnets is that bonded NdFeB magnet tiles require molds to produce....
Courage magnet manufacturers in China specialize in the production of various specifications of NdFeB strong magnetic tiles, large-radian strong magnetic tiles, large-sized arc magnetic tiles, arc-shaped sector magnets, and you are welcome to consult the arc-shaped magnets for quotation and proofing....
You are now browsing this ring for bonded neodymium magnets, gray epoxy on the surface, outer diameter 8mm, diameter of the hole is 4.5mm, height 6mm, it's mainly used in the field of electric motors, if you need other specifications, please consult us....
The sample shows a chemical nickel coated NdFeB small cylindrical magnet with N42 grade of magnetic properties, requires magnet N pole scribe marking, 2mm diameter, 2mm thickness, axial magnetization, the difference with conventional nickel is not obvious from the appearance but it is more suitable for use in wet, acidic or alkaline environments....
This is a small and thin (flat) round countersunk magnet, diameter 8mm, thickness is only 2mm, you see the countersunk hole neodymium magnets are generally about 3mm thick, so it belongs to the thinner countersunk hole magnets, if you want to be thinner it is difficult to process, for the customization of this type of magnets we are very good at,...
N42SH grade radial hollow cylindrical magnet 6.3x3x11mm for high speed motors...
This product is a T-shaped strong magnet, the material is rare earth NdFeB, it is a custom-shaped irregular Nd magnet, the sample is N52 grade, the surface is nickel coated, mainly used for connectors, electronic products, medical equipment, the maximum working temperature It is 80 degrees Celsius. If you need to use it in a high temperature environment, you need to replace the temperature resistant material....