The inclusion of a hole in NdFeB ring magnets significantly enhances their design flexibility. The hole allows these magnets to be used in rotating systems, such as electric motors, generators, and even magnetic bearings. In motors, for example, the hole can be used to mount the magnet on a shaft or axle, making it easier to integrate the magnet into the rotor or other moving components of the motor.

Additionally, NdFeB ring magnets with holes are widely used in magnetic assemblies, where they can hold other components in place. The hole offers a way to easily secure these magnets to different surfaces, improving the ease of assembly and the precision of their placement in machinery or devices.

This versatility in design makes these magnets suitable for a wide range of industries, from automotive and aerospace to renewable energy and consumer electronics. They are commonly found in applications like sensors, magnetic separators, actuators, and even in medical devices such as MRI machines.

The ring shape of NdFeB magnets with holes allows them to make efficient use of available space, particularly in confined or compact areas. The hollow center reduces the overall volume of the magnet while still providing a strong magnetic field around the perimeter. This space-saving feature makes these magnets highly effective in applications where magnetic strength is needed, but the space is limited.

For instance, in rotating machinery or motors, the ring shape with a hole allows the magnet to be mounted around a shaft, which saves valuable space and improves the overall design of the system. This feature is particularly beneficial in applications where compactness and efficiency are critical, such as in electric vehicles, wind turbines, or portable electronic devices.

https://www.mlmagnet.com/product/ndfeb-ring-shape-magnet/ring-neodymium-magnets-with-hole.html
These are ring neodymium magnets with holes used in various applications where they can be stuck and repositioned with ease during use. Neodymium ring magnets are one of the strongest permanent magnetic materials available and have high resistance to demagnetization.