permanent lifting magnet

الوصف

Permanent lifting magnets incorporate permanent magnets in conjunction with steel parts, The permanent magnets provide the power for an indefinite period of time. For practical use the magnetic power of a permanent lifting magnet has to be turned ON and OFF. This is done mechanically. An external power source is not required which means permanent lifting magnets can be used virtually anyway. They are so-called “ self-contained “devices.
Permanent lifting magnets create a strong but relative to electromagnets, low magnetic field. Therefore they are rather sensitive to air gaps. This means when the air gap between load and lifter increases, the magnetic force will decrease considerably. The handling of loads with a rough and uneven surface is therefore restricted. Because of the manual operation of this type of magnet it is not convenient for use in multiple on a beam. They cannt be operated from a distance. Typically these magnets are used individually.