In this study, we investigated the integration of an NdFeB N35 permanent magnet into an electromagnetic chuck to maintain its magnetic force continuously. By energizing or de-energizing the coil wrapped around the chuck, the surface magnetic force was increased or decreased, achieving either stronger adhesion or easy detachment of the attached object, respectively. ANSYS Maxwell software was utilized to simulate the initial model, the results of which were then compared with physical measurements. Keeping the external dimensions unchanged, the yoke’s dimensions were used as the parameters to analyze the effect of changes in dimensions at different positions on the electromagnetic chuck’s surface adhesion force. Differences between simulated and measured results for the initial model after energizing the electromagnetic chuck were within 6%. Among the simulations with different parameters, changes in the thickness of the outer frame base and inner diameter did not significantly affect the magnetic flux on the surface of the electromagnetic chuck. Therefore, these results were not shown in this study. Alterations in the yoke’s dimensions affected the relative position and size of the coil or created new magnetic flux paths. A distance of less than 1 mm between the coil and the chuck surface significantly affected the surface magnetic flux density.