Magnetization Direction for Neodymium Magnets
Discs & Cylinders
Disc and Cylinder magnets can be axially or diametrically magnetized.
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 B-10-05-025-N and B-15-10-05-N.
Rings
Ring magnets can be axially or diametrically magnetized.
Axially Magnetized
Examples include R-15-05-05-N and R621N.
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.
Mounting Magnets
Round Mounting Magnets are assembled with an axially magnetized disc or ring magnet set inside a steel cup. The north pole of the magnet faces outward.
Our Rectangular Mounting Magnets are constructed in a similar fashion.
North Pole Facing Out
Examples include MMS-C-X4 and MM-A-32.