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The magnet in the brushless motor is installed on the rotor and is one of the important parts of the brushless motor. So what requirements does the brushless motor have for the magnet? For example, magnetic performance requirements, shape, number of poles, etc., let me introduce to you today.
Where are the brushless motor magnets located?
Magnet performance requirements for brushless motors
The brushless motor mainly uses high-performance rare earth NdFeB magnets. Because the power of the motor is closely related to the performance of the magnet, it can be basically understood that the volume and grade of the neodymium magnet determine the maximum power of the motor.
Magnet Shape Requirements for Brushless Motors
The shapes of brushless motor magnets mainly include square magnets, tile-shaped (arc) magnets, ring magnets, and bread-shaped magnets.
Advantages of square-shaped magnets: simple processing, relatively cheap price, and a good choice for motors that pursue cost.
Advantages of arc magnets: The arc can ensure that the air gap between the magnet and the silicon steel sheet is always consistent, and it seems that the power and efficiency are better than the square magnet.
Advantages of bread-shaped magnets: According to professionals, they believe that this type of magnet is more effective than arc-shaped magnets.
Ring magnet advantages: easy installation, superior performance, high-end general use ring!
Number of magnet poles required for brushless motors
Common magnet types of brushless motor magnet;
This magnet ring is made of high-performance rare earth neodymium as the base material, with an outer diameter of 30 millimeters and a thickness of 6 mm, in a ring design. In terms of surface treatment, a nickel layer is first used as a base to enhance corrosion resistance and coating adhesion....
This 1/2-inch neodymium magnet is circular in shape and features a phosphated coating, offering excellent corrosion resistance, making it particularly suitable for applications in humid or harsh environments. It measures 12.5 mm x 3 mm and provides strong magnetic force...
This magnet is a ring-shaped neodymium magnet with radial 10 poles. The material is bonded NdFeB, the inner circle is magnetized with 10 poles, and the strong magnetic surface is inner circle. The size of the magnet is 32.6mm in outer diameter, 28.6mm in inner diameter, and 6mm in height....
This product is a square ceramic magnet, made of sintered ferrite anisotropy, with low remanence, low recovery magnetic permeability, and strong anti-demagnetization ability. 12mm, suitable for fitness equipment, massager, magnetic control machine, air pump, if you are interested in this product, please contact....
You are now viewing this is a super small (tiny) size ferrite block magnet sample, high performance grade Y30, magnet length 2.45mm, width and thickness are 1mm, magnetization direction along the length....
This product is a variety of isotropic ferrite (Y10) rotor magnets ring, which are processed and manufactured by the Chinese permanent magnet supplier Courage Magnet. The inner aperture size of the magnet is 5.4mm, and the surface is smooth and free of defects. It can be magnetized according to the number of magnetic poles required by customers, such as radial 2, 4, 6, and 8 poles...
This product is a float switch magnet, a float ring magnet, and the material is ferrite. Drinking system, etc.), industrial equipment (such as: air oil compressor, air cooler, drain, lubricating oil system), gardening equipment, medical equipment, beauty salon equipment, aquaculture and industrial water purification, sewage treatment system, automatic door control system, Automotive and other industries....
This product is a high-performance arc-shaped magnet. The material is the strongest magnetic material NdFeB. It has the characteristics of small size, light weight and high torque. It is especially suitable for high-end servo motors and brushless motors. It is widely used in industrial motors. , so that the brushless motor has the advantages of light weight, high efficiency, low noise, small speed error, etc....