During charging or demagnetization, there is no change in the accuracy of the worktable. The chuck undergoes special treatment to prevent corrosion from cutting fluids, making it suitable for long-term operation in cutting fluids. It operates on a simple working principle. During operation, it provides strong adhesion, has a long service life, and does not require an external power source. However, it is essential to note that the permanent magnetic chuck can only attract magnetic materials and not non-magnetic materials. During use, care should be taken to avoid contact between magnetic materials and non-attractable items such as electronic devices to prevent damage.