Neodymium Ring Magnet - (OD)25mm x (ID)10mm x (H)2mm | N38
Product code: R-OD25H2ID10-N38
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Neodymium Ring Magnet - (OD)25mm x (ID)10mm x (H)2mm | N38
Magnetic Product Description:
This rare earth ring magnet has an outside diameter of 25mm, an inside diameter of 10mm and a thickness of 2mm. It is identified by the AMF magnet part number R-OD25H2ID10-N38.
Uses for our rare earth ring magnets:
Neodymium magnets are the strongest type of magnets on the market and they come in a range of different shapes and sizes. Ring magnets are a crucial component of many devices as they provide superior accuracy and precision. Fitting externally over a shaft or internally inside a tube, this serves as a magnetic ring sensor guiding moving mechanical elements into the correct position. Rare earth ring magnets are also adaptable magnets for use around the home or in DIY projects as the hole in the middle provides an easy method to attach the magnet. The North and South poles are present through the flat faces of this axially magnetised ring.
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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.
