The panel of the permanent magnet lift has different magnetic distances, and the size of the magnetic distance also affects the magnetic force. Generally, the workpiece is placed on the surface of the magnets. The more magnetic poles it spans, the larger the magnetic force is, and vice versa. Therefore, when selecting a permanent lift magnet, we must fully consider the size of the workpiece. If the workpiece is large, then we choose a lift magnet with a wider magnetic distance, so that the suction force will be relatively large. If the workpiece is thin and small, then it is necessary to choose a fine-grained permanent magnet chuck with relatively dense magnetic poles, so that the workpiece can also span multiple magnetic poles and the magnetic force will be large.
In general, the magnetic force of a permanent lift magnet is small because the number of intermediate magnets is not standard enough or has been damaged. The magnetic force of the lifting magnet has been determined as soon as it leaves the factory. It cannot be changed, becomes smaller and does not increase.