Buttons

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button magnets

Alnico 2 magnets with a maximum working temperature of 550 degrees C.

 

About button magnets 

In button magnets the poles each occupy a side of the end of the magnet face and are separted by a groove. They're made from a single piece of material so don't suffer from differential expansion or contraction and are therefore more suited to some higher temperature applications than pot magnets.

 

They're not as powerful as the equivalent pot magnet but have a greater depth of field (the distance that the magnet can attract over).

 

Note: don't mix up button and pot magnets (pot magnets have the poles arranged concentrically on the magnet face, one inside the other) as they behave differently and have different uses.

 

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PRODUCT RANGE

Product Diameter (mm) Height (mm) Maximum Pull Quantity Weight (kg)  
E821 12.5 9.5 0.7 10 0.006
E822 19.1 12.7 1.9 10 0.02
E823 25.4 15.9 3.4 10 0.05
E824 31.8 25.4 4.8 2 0.113
E825 22.2 19.1 3 10 0.05
M4140NK 22.2 19.1 3 1 0.041
M4140NR 22.2 19.1 3 1 0.041
M4140SK 22.2 19.1 3 1 0.041
M4140SR 22.2 19.1 3 1 0.041
M4776ANK 12.7 9.5 0.7 1 0.007
M4776ANR 12.7 9.5 0.7 1 0.007
M4776ASK 12.7 9.5 0.7 1 0.007
M4776ASR 12.7 9.5 0.7 1 0.007
M4776BNK 19.1 12.7 1.9 1 0.02
M4776BNR 19.1 12.7 1.9 1 0.02
M4776BSK 19.1 12.7 1.9 1 0.02
M4776BSR 19.1 12.7 1.9 1 0.02
M4776CNK 25.4 15.9 3.4 1 0.049
M4776CNR 25.4 15.9 3.4 1 0.049
M4776CSK 25.4 15.9 3.4 1 0.049
M4776CSR 25.4 15.9 3.4 1 0.049
M4776DNK 31.8 25.4 4.8 1 0.113
M4776DNR 31.8 25.4 4.8 1 0.113
M4776DSK 31.8 25.4 4.8 1 0.113
M4776DSR 31.8 25.4 4.8 1 0.113