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Magnetization Direction for Neodymium Magnets


Discs & Cylinders

Disc and Cylinder magnets can be axially or diametrically magnetized.

Axially Magnetized

 

Examples include D82 and D48.

Diametrically Magnetized

 

Examples include D82DIA and D48DIA.



Blocks

Block magnets are defined by three dimensions: Length, Width and Thickness.  To be consistent, we define the Thickness dimension along the axis of magnetization.  The thickness is usually the smallest dimension, but not always!

We're sometimes asked if we can provide block magnets magnetized through the length or width.  Yes, we do have some long "bar" magnets, where the magnetization is in the longest dimension. We do still define this as the Thickness, though.

Magnetized Through Thickness

 

Examples include B882 and B828.



Rings

Ring magnets can be axially or diametrically magnetized.

Axially Magnetized

 
Examples include R424 and R828.

Diametrically Magnetized

 
Examples include R424DIA and R828DIA.



Spheres

Spheres can only be axially magnetized.  There is only one possible direction.                       

Axially Magnetized


Examples include S4 and S8.



Arc Segments

Arc Segment magnets can be magnetized in one of four directions.

North on the Outside Face


Examples include AX2C45-N and AY0X030-N.

South on the Outside Face


Examples include AX2C45-S and AY0X030-S.

Magnetized through Circumference


One example is the AY0X030-C.

Magnetized through Thickness




Arc Magnetization with Poles on Inner & Outer Face


Note that the magnetization is along a straight axis, and is not truly radial.  The lines do not converge at the center of the arc.  When assembled, arc segments like this can be used to approximate a radially magnetized ring.

Circumferential Magnetization of Arc Segments


Again, the lines of magnetization are all parallel.  The lines do not curve around the arc.
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