Magnetic lifters are naturally versatile and it works in the roughest manner. It is used for moving a variety of ferrous metals ranging from small bundles of rod or scrap to large, heavy blocks. Lifting magnets are great for advantages related to both quality and labor. Using these techniques, you can improve overall productivity by allowing a single person to lift a load of metals. It lessens the labor and time of the work which otherwise you might have needed two or more people the old way.
Magnetic lifters whether electric or permanent have the rated capacity mentioned on the nameplate. The trick is to move the load safely, and to do that the equipment needs to be properly specified and applied. If the magnet is being used on a material that is thinner than the material it was rated on, the capacity will be reduced. It might be used in multiples on beams to augment the amount capable of being lifted.
Larger magnets present on overhead cranes are dedicated to the crane mechanism and its range of movement. When loads are being lifted and rotated to a shear position, one should note that the magnet's capacity drops to about one-fourth of what the nameplate states. When multiple magnets are used to lift loads, the magnets should be spaced evenly to carry the whole load. These systems are used to deal with single or multiple plate, whether in storage areas.
Remotely operated lifting magnets can be controlled through a pendant switch or a remote control transmitter. Given that magnets operate on DC, a combination AC to DC rectifier and magnet controller is mounted on the crane. This device converts the crane power from AC to DC and turns the magnet on and off. Also, one must be very careful about the application because the materials tend to slide when subjected to shear forces.
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