(#125) Why Your Solenoid Actuator Is Weak

Mechanical Engineering Made Simple · Mar 31, 2026 · 18m · transcript

Your solenoid isn’t weak. Your assumptions are.

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In this episode, we break down why solenoid actuators fail to deliver force even when the math says they should. This is a deep dive into electromagnetic reality, where air gaps, saturation, and bad geometry quietly destroy performance.

We walk through the physics behind solenoid force generation, showing how magnetic circuits actually behave under load. You will learn why force is proportional to the square of magnetic flux density, and how even a tiny air gap can collapse your entire design.

We expose…