Key Knowledge Points for Drive Motor Magnets

The magnet (usually a permanent magnet) in the drive motor is one of the core components of the motor, mainly used to generate a magnetic field and achieve the conversion of electrical energy and mechanical energy. The following are the key knowledge points about the drive motor magnet that Xiaofu has compiled. If you need to customize a magnet, please contact us.

Main types of materials used in drive motor magnets;

Sintered and bonded neodymium magnets: the main characteristics are strong magnetism, the volume can not be too large, high efficiency, mainly used in new energy automobile motors, industrial servo motors, robots and other high-performance occasions.

High Performance Sintered Neodymium Arc Magnets

Samarium cobalt: mainly used 2:17 more than, high temperature resistance performance is good (up to 350 ℃ above), corrosion resistance is also excellent, mostly used in aerospace, military industry, high temperature environment motor.

Related Products：Samarium Cobalt Arc Magnet

Ferrite: The main features are low price, good temperature resistance and corrosion resistance, not easy to demagnetize, mostly used in home appliances, fans, pumps and other drive motors that do not require high performance.

Related Products：Ceramic Ferrite Segmented Permanent Magnets

Shape and structure design of drive motor magnets;

Curved magnets (fan-shaped): most commonly used in internal/external rotor motors, fitting the curved surface of the rotor.

Rectangular, block shaped: mostly found in linear motors, balance bike motors or brushless disk motors.

Radial magnetized/radial ring shape: used in high-end high-efficiency drive systems such as hub motors.

Fixing method of the drive motor magnet;

Drive motor magnet mounting and fixing methods mainly include gluing, mechanical fixing and injection molding three categories: gluing method is commonly used in permanent magnet motors, the magnet with high strength and high temperature glue pasted in the rotor groove, suitable for high-speed motors, such as new energy vehicle drive motors; mechanical fixing through the slot, pressure plate and other structures will be positioned to enhance the magnet centrifugal force resistance, commonly used in high-rotation speeds or high vibration conditions;

The article is introduced to this, if your company has a drive motor magnet drawings need to assess the price please send by e-mail, thank you!