Is a thinner workpiece easier to hold on a magnetic chuck?

The answer is no. Based on the nature of magnetic force, magnetic field lines have a certain height. When the workpiece is too thin, these magnetic lines can pass through it, meaning much of the magnetic force cannot effectively act on the workpiece itself. As a result, the holding force may be significantly reduced. Therefore, a workpiece with a certain minimum thickness is generally more effective, as it allows the magnetic field to be concentrated within the material instead of leaking through it.

In addition to thickness, several other factors affect magnetic holding performance—such as the material of the workpiece, the flatness of the contact surface, and the surface area in contact with the chuck. To optimize holding force, different types of magnetic chucks are designed for various applications. These include chucks for milling (heavy-duty cutting), grinding (light-duty cutting and grinding), coarse pole chucks (with wider pole pitch), fine pole chucks (with narrower pole pitch), and other special-purpose magnetic chucks.

For any questions regarding magnetic holding or the selection of suitable magnetic chucks, please feel free to contact Guang Dar Magnetic Industrial Co., Ltd. We are happy to assist you.