Magnetic terms explained for engineers and buyers: gauss and tesla measure magnetic flux density (B); oersted and A/m measure magnetic field strength (H); Br is remanence; HcJ is intrinsic coercivity; and BHmax is maximum energy product. Includes SI/CGS conversions and links to engineering calculators.
Introduction Magnetic assemblies are integral components in a wide range of industries, offering enhanced performance over standalone magnets. By combining magnets with other materials such as steel, aluminum, or plastic, these assemblies provide higher mechanical stability, improved magnetic performance, and easier integration into various applications. This article explores the applications, design considerations, and manufacturing processes […]
How do magnets work in electric motors? BLDC and PMSM motors use permanent magnets on or inside the rotor to interact with a rotating stator field and produce torque. Compare SPM vs. IPM rotors, NdFeB vs. ferrite, Br and HcJ, temperature/demagnetization risk, arc segments, multipole rings, Halbach rotors and OEM motor-magnet sourcing.
The Impact of Potential Tariffs on Rare Earth Magnets Rare earth magnets are critical components in various industries, including electronics, automotive, renewable energy, and defense. Composed primarily of elements such as neodymium, praseodymium, dysprosium, and terbium, these magnets are essential for high-performance applications like electric vehicle (EV) motors, wind turbines, and military technologies. However, the […]
Magnets in medical devices are used for sensors, miniature motors and pumps, magnetic couplings, actuators, encoders, retention and non-contact positioning. Learn how to specify material, grade, field at the working gap, magnetization direction, coating, temperature, tolerances, traceability and compliance for OEM medical-device applications.
Can you cut, drill or grind a neodymium magnet? Usually, you should not modify a finished magnet. Brittle magnet material can crack or chip, machining heat can cause irreversible magnetic loss, protective coatings can be damaged, and NdFeB dust can be combustible. Learn safer alternatives, including stock sizes and custom pre-machined magnets.
Radial vs. diametric magnetization explained: diametric magnets place north and south poles on opposite sides of the curved surface; true radial ring magnets follow the local radius around the circumference; axial magnets place poles on the flat faces; and multipole rings use several alternating poles. Compare sensor, encoder, motor and custom ring applications.
Predictions for 2025 in the Magnetics Industry The magnetics industry is at the forefront of technological innovation, serving as a critical enabler for renewable energy, electric vehicles (EVs), advanced electronics, and more. As we enter 2025, several transformative trends are shaping the future of this dynamic sector. 1. Expansion of Rare Earth Alternatives The dependency […]
What metals are not magnetic? Aluminum, copper, brass, gold, silver, lead and titanium do not strongly stick to ordinary magnets. Learn why aluminum is only weakly paramagnetic, why copper and precious metals are diamagnetic, how 304/316 stainless steel behaves, and why non-magnetic target materials matter in real magnetic assemblies.
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