China Neodymium And Ferrite Magnets Manufacturer & Supplier 
Motor magnets are one of our main magnet products, customers need to consider many aspects when choosing motor magnets, such as magnet material, size, shape, etc. whether it is used for permanent magnet DC motors, stepping motors, synchronous motors or brushless motors, choosing the right magnet material and specifications is the key to ensure the stable operation of the motor.
6 Things to Consider When Choosing the Right Motor Magnets
Types of Motor Magnets
When it comes to motor magnets, there are two main types to choose from, permanent magnets and electromagnets. Typical permanent magnets are made from materials such as neodymium-iron-boron permanent magnets, samarium-cobalt permanent magnets, and ferrite permanent magnets, which do not require any external power source to produce a stable magnetic field. On the other hand, electromagnets are made by winding coils around a ferromagnetic core, and they require an electric current to generate a magnetic field.
The picture below shows R27.5 x 20.5 x L30 x T7.2mm curved ferrite permanent magnets.
NdFeB magnets are primarily used in applications requiring high torque and high efficiency, such as brushless DC motors (BLDC) and high performance stepper motors.
Ferrite magnets are lower in cost and are suitable for low-end applications such as micromotors, fan motors, and power tools.
Samarium Cobalt magnets have excellent corrosion resistance and high temperature performance, mainly used in high temperature motors.
Motor Magnet Temperature Stability
Magnet temperature stability is another important factor to consider because it affects magnetic field strength over time. Some materials, such as NdFeB, are more susceptible to demagnetization at high temperatures, which can lead to a reduction in magnetic field strength. On the other hand, materials such as Samarium Cobalt have higher temperature stability, making them ideal for high temperature applications.
Recommended Browsing: List of high temperature resistance permanent magnets
Motor Magnet Sizes and Shapes
The size and shape of the magnet is critical to ensure that it fits correctly in the motor and provides the necessary magnetic force. We have a wide range of shapes and sizes available, including rectangular, curved, and ring, hollow cylinder.
Related Documents: Shape Type And Advantage of Magnets In Electric Motors
Magnetic field strength of the motor magnet
The strength of the magnet is an important factor to consider as it will determine the performance of the motor. We can offer magnets with different levels of magnetic strength, so you can find the one that meets your needs.
Neodymium Magnet Performance Grade Data Sheet
Ceramic Ferrite Performance Grade Data Sheet
Cost and Budget
While neodymium-iron-boron magnets offer the most performance, they are relatively costly. The choice needs to be balanced against budget and performance requirements. If the motor does not require the highest performance magnet, consider choosing a more cost-effective high-grade ferrite.
Motor Magnet Quality and Reliability
When it comes to motor magnets, quality and reliability is the key, our company has rich experience in the production of motor multi-pole magnetic rings and arc segmented magnets, and there are many stocks and molds.
If you have any questions or need help choosing the right magnets for your motor, our customer support team is here to help.
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