钕磁铁圆片应用广泛，有工业“维生素”之称。

孔圆片钕磁铁（也称为圆片磁铁）是一种强力永磁磁铁，由稀土元素钕（Nd）和铁（Fe）组成。它较高的磁力和磁能密度，因此在许多应用场景中被广泛使用。

一种常见的应用场景是在电动机和发电机中。钕磁铁可以提供强大的磁场，使电动机和发电机更加高效并具有更高的输出功率。由于其高磁能密度，相比传统的磁铁材料，它可以在相对较小的空间内提供相同或更大的磁力。

另一个应用是在扬声器和耳机中。圆片磁铁可以产生强大的磁场，使扬声器或耳机产生清晰、高质量的音频。由于其体积小、重量轻，适合用于便携式设备。

此外，圆片磁铁还可以用于磁体聚焦、磁选、磁悬浮、磁力吸附、磁力传动等领域。它们也常用于制造化学、石油、矿业、医疗、机械设备等行业的各种设备和工具。

需要注意的是，钕磁铁具有相当强的磁力，使用时需要小心操作，以免造成意外伤害。

Neodymium magnet discs are widely used and are known as industrial "vitamins".

Hole disk neodymium magnet (also known as disk magnet) is a powerful permanent magnet composed of rare earth elements neodymium (Nd) and iron (Fe). It has high magnetic and magnetic energy density, so it is widely used in many application scenarios.

A common application scenario is in motors and generators. Neodymium magnets can provide a powerful magnetic field, making motors and generators more efficient and have higher output power. Due to its high magnetic energy density, it can provide the same or greater magnet force in a relatively small space compared with traditional magnet materials.

Another app is in speakers and headphones. The disc magnet can generate a powerful magnetic field, allowing speakers or headphones to produce clear and high-quality audio. Due to its small size and light weight, it is suitable for portable devices.

In addition, disk magnets can also be used in magnet focusing, magnetic separation, magnetic levitation, magnetic adsorption, magnetic transmission and other fields. They are also often used to manufacture various equipment and tools in chemical, petroleum, mining, medical, mechanical equipment and other industries.

It should be noted that neodymium magnets are quite magnetic and need to be handled carefully when used to avoid accidental damage.