Ring magnets with a big hole, made of NdFeB (neodymium-iron-boron) are widely used in various applications where a magnetic field needs to be generated with a large central opening. Some of the common uses of these magnets are:
Motors and Generators: Ring magnets with a big hole are often used in the construction of motors and generators, where they are used to produce a magnetic field that rotates around the central axis. The large hole in the magnet allows for the placement of a rotor or armature inside the magnet, which can rotate freely while being influenced by the magnetic field.
Magnetic Separators: NdFeB ring magnets with a big hole are used in magnetic separators, which are devices that separate magnetic materials from non-magnetic ones. The central hole in the magnet allows for the passage of non-magnetic materials, while the magnetic materials are attracted to the magnet and held in place.
Magnetic Couplings: Ring magnets with a big hole are also used in magnetic couplings, which are devices that transmit torque from one shaft to another through a magnetic field. The large central opening allows for the placement of a non-magnetic barrier between the two shafts, preventing any physical contact between them.
Magnetic Levitation: NdFeB ring magnets with a big hole can also be used in magnetic levitation systems, where they are used to create a magnetic field that supports the weight of an object above them. By placing a magnet with a big hole above another magnet, the magnetic field can be concentrated in the center, allowing for levitation of the object in the hole.
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