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Today, when I was visiting a motor forum, I found that a netizen asked how to choose the magnetic steel of the brushless DC motor? What are the effects of the remanence, coercive force and magnetic energy product of the magnetic steel in the brushless DC motor on the performance of the magnetic steel? Then there is how to select the correct magnetic steel performance parameters according to the conditions of the motor. If the parameters such as remanence are the same, what is the difference between ferrite and rare earth?
This is almost the case. In the magnetic steel, the residual magnetism br refers to the magnetic induction intensity of the magnet at this time after the magnetic field is magnetized to the technical saturation under the action of the external magnetic field of the magnet. ) Intrinsic coercive force HCJ refers to the reverse magnetic field strength required to reduce the magnetization of the magnet to zero, (whether the magnet can continue to work at high temperature and how much temperature it can withstand, mainly depends on HCJ) Magnetic energy product (BH) max refers to the product of B and H at any point in the demagnetization curve, and the maximum value of BXH is called the maximum magnetic energy product. (Comprehensive parameters, the selection of magnetic steel mainly depends on BR and HCJ)
What kind of magnet should the bldc motor choose?
This mainly depends on the comprehensive consideration of your application field, power, maximum operating temperature, and even original design experience, Generally, more neodymium arc magnets are used.
What is the difference between ferrite and rare earth magnets?
Both ferrite and rare earth neodymium magnets belong to permanent magnets. Permanent magnets are a general term. Sintered ferrite magnets, injection molded ferrites, sintered NdFeB magnets, bonded NdFeB magnets, etc. are all types of permanent magnets. The magnetic properties, plasticity, machinability and economy of various materials are different, depending on how you choose.
The above motor magnets can be customized by our company. Customers with drawings are welcome to send drawings to our business for quotation, and look forward to your consultation.
Brushless motors may also use the following magnets;
The material is rare earth neodymium magnetic material, N35 grade, standard ±0.05mm tolerance, welcome customers from Turkey, India, the United States, the United Kingdom, Dubai, Germany and other customers to inquire about the price....
This is a powerful cylindrical magnet with countersunk holes provided by Courage magnet manufacturer in China. The material is neodymium magnetic material. It belongs to rare earth magnets and can be processed according to your actual needs of diameter, height and counterbore depth. Customized, some customers choose countersunk holes, some customers choose straight holes, the position of the holes can be on the side...
Product Size: Tiny cylinder strong magnets, Magnet size: diameter 2mm, thickness 3mm，If you have wholesale and customized requirements for small cylindrical magnets, you are welcome to contact us for quotation and proofing....
This is a round neodymium magnet with a diameter of 2mm and a height of 2mm. It belongs to the category of mini magnets. The magnetic grade can be selected from N35-N52. It is also possible to withstand high temperature of more than 100 degrees. The surface is nickel-plated and copper-nickel can protect the magnet higher Extend the service life, suitable for DIY decorations, fixing photos, changing Lego, electronic products, etc., and accepting customization....
Neodymium iron boron segmented magnets, also called neodymium arc-shaped bending magnets, are mainly used for the stator or rotor of the motor, usually requiring a temperature resistance of more than 100 ℃, using radial pairing magnetization, this product is R35, 60 degrees, 6 arc-shaped Magnets can be assembled into a ring...
This is a ceramic ferrite ring magnet with an outer diameter of 10mm, an inner hole of 4.6mm and a thickness of 4mm. The magnetization method is radial 4-pole. If you are interested in this product, please contact our company to provide samples and prices....
Axial magnetized ring magnets can be made of neodymium, ceramic ferrite, or samarium cobalt. No matter what you want, our company can provide you with it. You can ask us for the size you want. Grade, if not available, it can also be customized for you. The ferrite ring can also be multi-pole magnetized. Welcome to inquire....
Under Neodymium Arc Magnets, you can find many shapes of Motor Arc Magnets, if you need a specific size, which is not available on our website, please contact us to get a factory quotation for custom Arc Magnets, delivery time....