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Neodymium Ring Magnet - 5mm x 2.1mm x 5mm N42

Product code: 23025

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Neodymium Ring Magnet - 5mm x 2.1mm x 5mm N42

Product Code 23025
Pull Force* .776 kg
Weight 1 gm
Style Rare Earth Ring magnet
Gauss 6019
Grade N42
Tolerance +/- 0.05mm
Coating Nickel (NiCuNi)
Direction of Magnetisation Axially magnetised thru the 5mm
Dimensions Outside Diameter:5mm, Inside Diameter:2.1mm, Thickness:5mm
*Measured against up to 10mm mild steel.
Neodymium Ring Magnet - 5mm x 2.1mm x 5mm N42

Magnetic Product Description:

This small rare earth ring magnet has an outside diameter of 5mm, an inside diameter of 2.1mm and a thickness of 5mm. It has a pull force of 776 grams. It is identified by the AMF magnet part number 23025.

Uses for our rare earth ring magnets:

Neodymium magnets like this ring-shaped item have unique advantages that other shapes cannot rival. The hole inside the Ring creates an attachment point for use in technical products and in electronic equipment manufacturing, where the magnet can sit atop plastic mouldings or on shafts that allow the ring to move and react with circuitry and electric fields. Neodymium Ring magnets are found in nearly all modern devices and equipment because they are small, powerful, permanent, reliable and because they eliminate the need for mechanical parts that can prove to be unreliable and will fail over time. This Ring is manufactured in N42 Grade material for increased magnetic strength. Higher grades are often used with Ring magnets to compensate for the loss of overall volume, and hence magnetic strength, that the void area creates.

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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.