About Neodymium Magnets
Most of our disc and cylinder magnets are labeled as axially magnetized because the magnetization direction is through the axis of the magnet. That means that the poles of the magnet will be on the large flat surfaces of disc and cylinder magnets rather than the rounded sides.
Most of our countersunk and self-adhesive magnets come in equally paired packs, enabling you to use them as attachments to other magnets if desired. The product detail page will specify whether the magnets come paired or not. For pairing with steel discs or other plates, the north/south orientation of the countersunk hole or adhesive tape is not an issue as both the north and south pole will be equally attracted to steel surfaces.
According to Merriam Webster, neo·dym·i·um – pronounced nē-ō-ˈdi-mē-um – is a silver-white to yellow colored metallic element (symbol Nd) of the rare earth group that is used primarily in magnets and lasers.
We use the description "magnetized thru thickness" to identify the locations of the poles on our block magnets. Thickness is always the last listed dimension and is also usually the smallest. For most of our block magnets, that means that the magnets stick or repel in the middle, on the large flat surfaces, rather than at the end of the block.
Neodymium magnets are composed mainly of neodymium, iron, and boron. If they are not plated, the iron in the material will oxidize, particularly if exposed to moisture. Even normal humidity will rust any iron over time. In order to preserve and protect the lasting performance of each magnet’s magnetic field, most neodymium magnets are plated or coated.Nickel is the most common choice, as it is durable and cost-effective. Our magnets are coated with a triple plating of nickel/copper/nickel. This creates a shiny silver finish and provides dependable resistance to corrosion in most applications. If you are interested in different coating...
All magnets work because of their unique atomic structure. Unlike all other objects, the atoms within magnets are all spinning in the same direction. This atomic flow inside of each magnet creates an invisible magnetic force or field around the magnet that can attract or repel other magnets – and attract other metal objects. In addition, all magnets have a north and south pole on opposite sides of the magnet. The north pole of a magnet points roughly toward earth's north pole and vice-versa. In terms of functionality, the common saying is: like poles repel, unlike poles attract.
Neodymium rare earth magnets are made with neodymium, iron, and boron. They are up to 10 times stronger than all other ferrite, ceramic, or alnico magnets of equal size. They are considered to be the strongest magnets on earth.
The most common places you’ll find neodymium magnets include: • Retail signs and counter displays. • Trade show booths and staging structures. • Leather purses, bags, garments, and holsters. • Custom boxes for premium products. • Presentation folders and scrapbooks. • Arts, crafts, and jewelry. • Wood doors and cabinets as door latches. • Health bracelets, bandages, and other medical devices. • Window coverings and blinds. • Magnetic resonance imaging (MRI) devices. • Audio speakers. • Vacuum cleaners and other motorized household appliances. • Bicycle dynamos. • Computer hard drives. • Wind turbine generators. • Fishing reel brakes. • Permanent...
The pull force is the force required to pull a magnet directly off of a steel plate. As it is measured in laboratory conditions, most real world applications will not reach the maximum pull strength listed.Pull force is measured in pounds or kilograms. Many factors can impact why the magnet may not be performing at the listed pull strength. Most commonly it is due to gravity. The strength of the magnet drops 65 percent or more when used in a horizontal application such as on the side of a refrigerator instead of in a vertical application such as on the underside of a metal...
All of our neodymium magnets are organized by shape and listed from the smallest to the largest available. Standard magnet shapes include discs, rings, cylinders, blocks, bars, cubes, and spheres. Some magnets are also available with countersunk holes or adhesive attached.Each magnet also has a corresponding strength or pull force rating measured in pounds or milligrams. The larger the magnet, the stronger the pull force generally speaking. Anything above seven pounds of pull force can pinch your fingers and should be handled carefully.