Information on adhesive force
Magnetic systems can be used for installation in devices and appliances. They help with transporting, clamping, mounting, lifting, welding, separating and holding ferromagnetic (ferrous) workpieces.
The best magnetic adhesion values are achieved when the magnets are pulled off vertically on ground workpieces and the holding surface is clean on both sides (air gap 0.0 mm). Small cracks in the magnets or center misalignment to the steel jacket have no influence on function, adhesive force and service life.
All cylindrical and flat magnet systems can be used in the long term at the maximum temperatures specified (without structural changes in the magnet materials). When heated up to these maximum temperatures, adhesive force losses of 15 to 40% can occur. However, this process is reversible and there is no permanent progressive reduction in holding force
The holding forces given in the table are minimum values at room temperature, which are achieved when the magnet systems are torn off vertically and applied to the entire surface of workpieces of sufficient thickness made of soft iron or low-carbon steel.
In the case of unclean pole surfaces or uneven workpieces, air gaps are formed which greatly reduce the adhesive forces. It is recommended to always ensure a clean pole surface and to clean it from time to time if necessary.
Different workpieces influence the adhesive force according to their permeability. Increasing roughness depth of the workpiece leads to a considerable loss of adhesive force due to the decrease in the contact area
The best magnetic adhesion values are achieved when the magnets are pulled off vertically on ground workpieces and the holding surface is clean on both sides (air gap 0.0 mm). Small cracks in the magnets or center misalignment to the steel jacket have no influence on function, adhesive force and service life.
All cylindrical and flat magnet systems can be used in the long term at the maximum temperatures specified (without structural changes in the magnet materials). When heated up to these maximum temperatures, adhesive force losses of 15 to 40% can occur. However, this process is reversible and there is no permanent progressive reduction in holding force
The holding forces given in the table are minimum values at room temperature, which are achieved when the magnet systems are torn off vertically and applied to the entire surface of workpieces of sufficient thickness made of soft iron or low-carbon steel.
In the case of unclean pole surfaces or uneven workpieces, air gaps are formed which greatly reduce the adhesive forces. It is recommended to always ensure a clean pole surface and to clean it from time to time if necessary.
Different workpieces influence the adhesive force according to their permeability. Increasing roughness depth of the workpiece leads to a considerable loss of adhesive force due to the decrease in the contact area
The adhesive force of the magnetic systems decreases as the air gap increases. Magnetically non-conductive intermediate layers have the same effect as an air gap
The magnetic systems described are non-ageing, i.e. they retain their holding force indefinitely. They can only be weakened by impermissibly high operating temperatures or high magnetic fields
