Pot Magnets consists of magnet material enclosed in a metal 'pot'. The pot is an essential part of the magnetic Circuit. Pot magnets fix Ferro-magnetic items quickly and easily in the desired place. These magnet systems have only one surface of magnetic attraction and all the other sides are non-magnetic. This form of construction restricts the further spreading of magnetic field. Due to this, other items or the machine parts near the pot magnet do not become magnetized.
Pot magnets retain their magnet force permanently. However, increase in temperature and external magnetic fields can reduce their magnetic force.
The drawer magnets are available with either Ferrite Magnets or with High Intensity Rare Earth Equipments & NdFeB Magnets.
Alnico Pot Magnets are very strong Permanent Magnets with great temperature resistance capacity and are applicable up to a temperature of 450o C. They are fixed in a steel pot having non-magnetized materials like brass or aluminum in between. The magnetic force gets reduced at high temperature; however it is restored as the pot magnets get cooled in room temperature. The alnico pot magnets are available in different sizes and shapes. These magnets are used mainly for gripping applications. The outer surface of the magnets can be either painted or coated with Nickel, Zinc or Chrome.
Technical details
Based on the applications and designs, alnico pot magnets are divided into following types
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