Neodymium Ring Magnet - (OD)15mm x (ID)5mm x (H)3mm | N42

Product code: R-OD15H3ID5

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Neodymium Ring Magnet - (OD)15mm x (ID)5mm x (H)3mm | N42

Product Code R-OD15H3ID5
Pull Force* 3.04kg
Weight 5 gm
Style Rare Earth Ring
Coating Nickel
Direction of Magnetisation Axially (through height)
Dimensions Outside Diameter:15mm, Inside Diameter:5mm, Thickness:3mm
*Measured against up to 10mm mild steel.

Magnetic Product Description:

This neodymium magnetic ring has an outer diameter of 15mm, an inner diameter of 5mm and the height of 3mm. It is identified by the AMF magnet part number R-OD15H3ID5.

Uses for our rare earth ring magnets:

Rare Earth Ring magnets are made from the strongest type of permanent magnet material, Neodymium. The North and South poles are located on the flat surface area on each side of the height dimension. Ring magnets are a popular shape because they offer alternative methods of attachment and positioning. Wire, cable or twine can be threaded through the central hole to enable the Ring to be secured in place.

They can make useful fasteners when used as opposing pairs, the hole allows them to be easily stitched into fabric or greater purchase for glue. Neo ring magnets can also bond with a steel striker plate or washer. When deciding on the correct magnet for your application it is always important to keep in mind that magnets are brittle in nature and could break or chip if allowed to snap magnetically into place with force. This is particularly the case with ring magnets as their shape makes them slightly more fragile in nature.

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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.