Neodymium Ring Magnet - (OD)25mm x (ID)10mm x (H)5mm | N40

Product code: R-OD25H5ID10-N40

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Neodymium Ring Magnet - (OD)25mm x (ID)10mm x (H)5mm | N40

Product Code R-OD25H5ID10-N40
Pull Force* 8.91kg
Weight 10 gm
Style Rare Earth Ring
Coating Nicke
Direction of Magnetisation Axially (through height)
Dimensions Outside Diameter:25mm, Inside Diameter:10mm, Thickness:5mm
*Measured against up to 10mm mild steel.

Magnetic Product Description:

This neodymium magnetic ring has an outer diameter of 25mm, an inner diameter of 10mm and the height of 5mm. It is identified by the AMF magnet part number R-OD25H5ID10-N40.

Uses for our rare earth ring magnets:

Rare Earth ring magnets have permanent power that is not easily disrupted. The circular shape and characteristic hole in the centre make ring-shaped magnets one of the most popular magnet shapes among commercial and domestic users. Both find the central hole convenient for attaching or positioning the magnet correctly. Simple applications use strong ring magnets to create a bond with metal objects and hold metal items in place. More complex apparatus also use Neodymium ring magnets as crucial components inside electronics, medical instruments, sound equipment and power generation systems.

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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.