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TechTalk Blog by Dura Magnetics

NEW TOOL AVAILABLE: Interactive Demagnetization / Permeance Coefficient (Pc) Calculator

After several months of programming, testing, and polishing, we have now made our interactive Demagnetization / Permeance Coefficient (Pc) calculator available for use on our website. This powerful tool calculates the Permeance Coefficient for a given magnet based on the magnet grade, shape, dimensions, and operating temperature specified…

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Theory of Operation of a Magnetic Torque Coupler

In the simplest form, magnets are able to exert a force over a distance. Whether by inducing a field in a ferromagnetic material or interacting with another magnet, a magnet can exert a force without touching. The magnet’s magnetic field is the mechanism for this non-contact force…

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Implementation Considerations for Synchronous Magnetic Torque Couplers (Geometric Misalignment)

When selecting a style of Synchronous Magnetic Torque Coupler, one must consider the type and how the coupler will be integrated to ensure a trouble free performance. The style of coupler, Face-to-Face or Coaxial, will generally be dictated by the requirements of the application, but the ability to ensure correct radial, axial, or angular alignment will also need to be considered…

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A Guide to Magnetic Linear Couplers

In this third Tech Talk article in a five-part series about Magnetic Torque and Magnetic Linear Couplers, we take a closer look at Magnetic Linear Couplers. Similar to a Magnetic Torque Coupler, a Magnetic Linear Coupler relies on the magnetic interaction between two coupler halves. As in the Torque Coupler, usually one half is the driver, and the other half is the follower. Linear Couplers are often simpler to design and to construct when compared to Torque Couplers because the movement is linear and non-rotational…

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Do Magnets Have a Shelf Life?

We are asked many times about the shelf life of permanent magnets. The simple answer is, no, there is no shelf life; however, as all things go with magnets, it is not that simple…

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Magnet Myths: Magnets are Commodities?

30 to 40 years ago, there were many small to medium sized magnet producers who competed to expand the performance of the magnet products they offered. They eagerly sought to raise energies, increase the heat tolerance, and increase the resistance to corrosion for commercially produced magnets. They also invested resources in developing new alloys to bring to market, and there was competition to increase performance…

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Did You Know?

Without proper design considerations, your magnet will fail. High temperatures, other magnetic fields and aggressive environments can cause magnets to fail.

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