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Magnetic Pull Force Explained


Breakaway force, holding force, fixturing force – “How can all of these represent the same measurement?” a younger engineer recently inquired. Engineers and non-engineers alike can be puzzled trying to understand some of the commonly used – but potentially misinterpreted terms – related to the concept of a magnet’s pull force.

These phrases are often used to represent “strength” when writing magnetic specifications. They also may be mentioned when anticipating the work required of a magnet within an application. To add to the potential confusion, maximum holding force or how much tensile force is exerted by any magnet, is often shown in online calculators – like our neodymium pull force calculator – are based on theoretical calculations of flux density.

Magnets With Adhesive Backing – Possibly Your Best Bet to Reduce Fastener and Fabrication Costs


Rare-earth Neodymium magnets can have an attractive pull force of up to 1,000 times the weight of the magnet. This property allows engineers to specify a particularly small magnet for a stay-in-place operation. It can also make it difficult to find an appropriate mechanical fastener (screw / bolt etc.) to hold that small magnet in place. Enter Dura’s adhesive-backed Neodymium magnet discs. Because these magnets are designed with the fastener “built-in,” they give design engineers flexibility and cost savings by allowing production / assembly staff to apply the magnets instantly to a work piece without the need for another component fastener.

Benefits and Drawbacks to Using Halbach Arrays


There is a time and place to use Halbach Arrays over conventional arrays. Depending on your needs, the time and cost involved in manufacturing Halbach Arrays may or may not be worth the investment. This final piece in our four part series on Halbach Arrays discusses the benefits and drawbacks to using these arrays. Magnetic […]

Magnet Shorthand: Are Neo Magnets and NdFeB Magnets the Same?


We occasionally get inquiries and manufacturing prints identifying a custom magnet shape using the abbreviation Neo. Because shorthand works – both internally and in discussions with our customers – we likewise sometimes refer to a Neodymium magnet as Neo or NdFeB. Of the rare earth element magnets, Neo magnets are the most commonly specified because they have the highest known energy product for their mass. One might possibly expect the Neo name to mean “new” – and that could be a reasonable assumption based on the fact that they were initially created relatively recently in 1984. The abbreviated name, however, actually comes from the element Neodymium – or Nd.

How Are Halbach Arrays Designed?


Function and application influence design choices. The balance between power and cost efficiency, for example, is a tough line to walk. So for many, the basic design elements of the Halbach Arrays and its analogues are of vital consideration. In this third article of our four-part series on Halbach Arrays, we will discuss design elements and variables.

Why are Samarium Cobalt and Neodymium Magnets Called “Rare Earth” Magnets?


There are seventeen rare earth elements– fifteen of which are lanthanides and two of which are transition metals, yttrium and scandium, that are found with lanthanides and are chemically similar. In general, rare earth elements were given their name for two different, yet significant reasons.

Did You Know?

Nickel/Epoxy/Parylene coatings can help reduce corrosion and chipping while extending magnet service life.

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