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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;
Buy thin ring magnets, customize ultra-thin ring neodymium magnets, you can contact China's pneumatic magnet manufacturers for quotation, we have a great price advantage for small precision strong magnets, many customers in the United States, Turkey and other countries choose to cooperate with us, today's size of the outer diameter of 9.2mm, inner diameter of 5mm, thickness of 1mm, galvanized surface...
This product is a high-performance 8-pole ring magnet with radial magnetization. The material is ferrite. It belongs to a ferrite multi-pole magnetized ring. The outer diameter of the magnet is 75mm, the inner diameter is 51mm, and the height is 35mm....
The sample is M10 countersunk hole square NdFeB magnet, the length and width are 75mm, thickness is 25mm, with strong magnetic strength, specializing in heavy industry, machinery and equipment, salvage, etc., welcome to bring quantities to consult the price....
Sample display is a N52 grade ultra-thin rectangular block neodymium magnet, length size 8mm, width 1.8mm, thickness is only 0.6mm, can be affixed with adhesive backing, scribing marking, although the size is small, but still has a certain degree of magnetism, suitable for use in a number of precision instruments, meters, handicrafts, toys....
This is ring-shaped neodymium magnet with an outer diameter of 4mm, a thickness of 4mm, and a middle hole of 1.6mm. It is N48 grade, with a surface magnetic force of about 3900 Gauss. It is produced and photographed by the courage magnet manufacturer carrich. If you are interested in this product, please leave us a message or send us an email....
Buy small hole radial magnet ring, high precision radial cylindrical magnet with small hole, welcome to contact Courageous Magnet Manufacturer, we have many customized cases, such as the one you see now, belongs to the motor radial magnet, outer diameter 2.5mm, center hole 1mm, height 4.8mm, N48H grade...
This product is a rectangular pot magnet with a hole, usually a counterbore. It is used together with screws. There are one with one counterbore and two with two counterbore holes. It is suitable for fishing, lifting metal objects, kitchen and bathroom hooks, etc., rectangular Can magnet specifications are customized according to customer requirements. Please contact us for prices....
Our company is a manufacturer of permanent magnets for electric motors, we can provide you with multi-pole ring magnets made of various materials, you are now browsing this is an injection molded ferrite ring, OD 41mm, hole 35mm, height 24.5mm, radial 4-polar magnetization, surface magnetic strength of 750 gauss or so, there are molds and samples, welcome to inquire about the price....