0769-23388351
Toggle Navigation
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;
Samples consist of high performance zinc plated hollow cylindrical sintered neodymium magnets and rotor shafts by radial magnetization, can be used for high speed hair dryer, vacuum cleaner, aeromodelling motors, etc,...
This is a disc-shaped ferrite magnet, anisotropic Y30 grade, diameter is 16mm, thickness is 5mm, 16x5mm, the surface is uncoated, natural color, suitable for industry, toys, crafts, if you are satisfied with this size, you can contact Our company will quote for you....
The round countersunk magnet is mainly used with screws. You can choose the size of the magnet, the size of the screw hole, the depth and the level of magnetic properties according to your actual needs. If you need our company to evaluate the price, please send us an inquiry for processing samples....
This is a small samarium cobalt magnet, made of rare earth samarium cobalt magnetic material, the size is 2mm in diameter and 2mm in thickness, the material is Sm2Co17, the grade is 26, and it is axially magnetized, so the N pole and S pole are on the plane, The surface is uncoated and is mainly used in high temperature industrial environments....
This is a ferrite square magnet, also known as a ceramic rectangular magnet. It is a widely used and cheap magnet material. The size of this sample is 15mm in length, 8mm in width, 3mm in thickness, and magnetized in thickness. The surface magnetism is 1030 Gauss about....
This is a circular ferrite magnet with a diameter of 5mm and a thickness (height) of 5mm, provided by the Chinese magnet supplier courage, with axial magnetization and no coating. This size is a relatively small ferrite magnet that can be seen. One that can withstand temperatures as high as 250°C and as low as -40°C, if you are interested in it, contact us for a quote....
This product is a ring magnet with an outer diameter of 8mm, an inner diameter of 2mm and a thickness of 3mm. It belongs to the series of 8mm ring magnets. The surface is nickel-plated, and it is axially magnetized....
Our factory specializes in producing all kinds of ferrite magnetic products, all kinds of square, round cake, magnet and ring. There are many mold specifications. If there is no mold, you can open the mold for processing! Welcome to inquire about the price!...