Product code: D-D25.4H3.175-N52-Ni
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This neodymium magnetic disc has a diameter of 25.4mm and a height of 3.17mm. It has a magnetic flux reading of 1795 Gauss and a pull force of 7 kilos. It is identified by the AMF magnet part number D-D25.4H3.175-N52-Ni .
The North and South magnetic poles of this powerful N52 grade Rare Earth disc magnet appear on the two opposing flat circular surfaces. Either of the poles will attach to a metal surface however they respond to another magnet by either attracting or repelling it depending on the pole presented.
The magnetic field produced by Neodymium material is superior in strength to all other permanent magnets and although they are often smaller in dimensions they can provide a stronger magnetic attachment.
Round disc magnets are particularly well suited to applications that make good use of their thinner profile. Confined spaces are no bother when you have a thin and wide magnet that can easily be slotted into position.
Round and flat magnets are easily concealed beneath the external surface of a product or inserted inside the lining of a textile or garment. By using two Rare Earth magnets, customers can create a magnetic bond between two materials that are not themselves metallic or magnetic. Simply glue the magnets to each surface with the opposing poles exposed, forming a bond that is both permanent and removable. Magnets have in many cases replaced the need for old fashioned fixtures such as screws, nails or clasps.
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NB: Ranges are indicative for product category, please check individual products for specic values within that range.
The most common coating for Neodymium magnets is Nickel + Copper + Nickel (Ni + Cu + Ni). This coating offers the magnet relatively good protection from corrosion and passive applications. If the magnet will be exposed to moisture or liquid then consider the use of an organic coating such as Epoxy. A hard wearing coating, Epoxy is suited to applications where the magnet will come under some friction or knocking.
Magnets are readily available in Blocks, Discs, Cylinders & Rings. AMF Magnetics specializes in the supply of short-run prototype magnets including Arc Segments, various magnetic orientations etc. If you need a magnet size that we don't carry in stock, submit a Design-a-Magnet enquiry for a quote on your custom magnet design.
Neodymium magnets are offered in several different grades. The first section N30-54 has an operating temperature of up to 80 degrees. Most of our stock only goes up to N38. The second section, denoted with the "M" prefix after the grade has an operating temperature 100 degrees. After this the grades are "H", "SH", "UH" & "EH". In order for the magnet to withstand a higher operating temperature, during production more of the raw material PrNd is incorporated as these elements have a naturally occurring resistance to high temperatures.
The Pull Force listed for each magnet is based on lifting 10mm thick steel from a horizontal surface. Magnets on a vertical surface (of 10mm thick steel) are generally able to hold around only 30% of the pull force listed in the product description. This is due to the effects of gravity and the lack of friction between the surface and the shiny magnet. Read More
