If you want to use rare earth block magnets in one of your product lines, then you need to choose options with the right properties for your needs. You don't just need to find the right size of magnet; you also need to think about its capabilities and limitations.
What do you need to know?
How Strong Does the Magnet Need to Be?
While you expect all magnets to be magnetic, they don't all have the same levels of magnetism. Some are weaker than others. This matters if you need a certain level of power in your product.
Neodymium magnet blocks come in specific grades. These grades tell you how strong a block is based on its structure and make-up.
So, every magnet you look at should have a grading that starts with the letter N. The number that follows this letter tells you how strong the magnet's material is.
For example, a block with a classification of N40 is weaker in magnetic terms than one with an N50 classification. This system helps you choose magnets that are strong enough to do their job in your products.
Will You Heat Your Magnet Blocks?
Magnetic strength isn't always the only factor that affects your purchase here. While this is the sole issue for some buyers, others need their blocks to have extra resilience.
For example, if you'll expose blocks to heat, either during the manufacturing process or when the product is used, then you also need to look at their heat tolerance. Heat can have negative effects on magnets.
If you heat a magnet above its tolerance limit, then it starts to lose some of its magnetism. If you heat it too much, it could demagnetise completely.
So, if heat is an issue, you need to find a magnetic grade that can cope with your temperatures. This grade is usually added to the magnet's category number.
Once you have an idea of what you need the magnet to do and cope with, you're closer to finding the right product. However, bear in mind that its future application and issues like the block's size also affect its performance.
For a more accurate idea of which magnet blocks you should buy, contact magnet suppliers. Tell them what you need the blocks for and give them information on any manufacturing or operating conditions they'll have to deal with. Suppliers can take this information and recommend suitable products for you.