Max breakaway force determines the maximum load that the lifting magnet can hold. It ensures the magnet can securely hold materials without detaching unexpectedly, reducing the risk of accidents or damage.However, the max breakaway force is not equal to rating attraction force. This article discusses the max breakaway force of a lifting magnet.
What is Max breakaway force?
It refers to the highest force required to detach the magnet from the material that it is holding.
What Affects Max Breakaway Force?
Magnet Strength: The strength of the magnet itself is the primary factor that affects the maximum breakaway force. The stronger the magnetic field, the greater the force required to detach the magnet from the material it is holding.
Surface Roughness: A rough or uneven surface can create gaps between the material and the lifting magnet. The distance between the magnet and the material being lifted (“air gap”) affects the maximum breakaway force.
Temperature: As temperature increases, the magnetic force decreases, which also reduces the max breakaway force.
How to Test Max Breakaway Force
Breakaway force testers are used to test the holding force of a magnet that is in contact with a flat steel plate. The forces are measured in pounds (or kilograms).
Safety Factor of A Lifting Magnet
It is advisable to analyse the forces on the main beam at the magnet design stage. The total load on the beam, including the maximum load and the self-weight of the magnet, needs to be considered. Generally, a lifting magnet can be considered safe when the safety factor is more than 3:1.
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