Rare earth magnets are used in various industrial applications such as in medical appliances, motors and magnetic separators. Such magnets have high performance and precision. Neodymiums represent one type of rare earth magnets that is popular due to its enhanced performance in small applications. When buying neodymium magnets, you should consider a host of factors such as price and grading. This article examines a few consideration when buying neodymium magnets.
Magnet Grade
Every application requires a suitable magnet for the job. Therefore, grading of neodymium magnets is integral to help buyers make an informed choice. Every neodymium magnet starts with the letter 'N', which stands for neodymium. The strength of a neodymium magnet is often measured in numbers, which refer to Megagauss-Oesteds (MGOe). The MGOe values range from 27 to 52. Therefore, a neodymium magnet with a strength of N52 is stronger than that of N30. However, before buying a magnet based on grade, it is important to consult an expert to select the best option that is suitable for your application.
Safety When Using Magnets
Rare earth magnets are powerful and precise, so you must be very cautious when handling them. For instance, neodymium magnets are known to cause injuries when two magnets collide violently. Therefore, such magnets should be kept away from children and any unauthorised individuals. Apart from the risk of injuries, neodymium magnets can also break when they collide with a magnetised metal. Also, such magnets can be brittle when they fall from a greater elevation. Therefore, users should keep such magnets in a safe place where they cannot drop easily.
Size and Price
Neodymium magnets come in different shapes and sizes, which can be overwhelming to first-time buyers. Although a big magnet is more powerful than a small one, you should be mindful about your needs before deciding on the right size of a magnet to buy. A big magnet has a larger surface area that increases the magnetic field of a device compared to a small magnet. However, you should note that large magnets can be expensive. For instance, a large high-grade magnet can be costly for most buyers; hence, there is a need to balance between performance, size and price when buying such devices. Besides, the shape of a magnet can also affect its performance and price. Therefore, you can reduce the cost of buying a neodymium magnet by opting for simpler shapes.
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