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Neodymium Ring Magnet - OD15mm x ID9mm x H3mm | N35

Product code: R-OD15H3ID9-N35

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Neodymium Ring Magnet - OD15mm x ID9mm x H3mm | N35

Product Code R-OD15H3ID9-N35
Pull Force* 2.50 kg
Weight 5 gm
Style Rare Earth Ring
Gauss -1109
Grade N35
Coating Nickel
Direction of Magnetisation Axially (through height)
Dimensions Outside Diameter:15mm, Inside Diameter:9mm, Thickness:3mm
*Measured against up to 10mm mild steel.
Neodymium Ring Magnet - OD15mm x ID9mm x H3mm | N35

Magnetic Product Description:

This neodymium magnetic ring has an outer diameter of 15mm, an inner diameter of 9mm and a height of 3mm. It is identified by the AMF magnet part number R-OD15H3ID9-N35.


Uses for our rare earth ring magnets:

Ring magnets are one of the most popular shapes of a magnet for manufacturing applications. The hole allows for the rare earth ring to be slotted on a protruding element such as a rod. Likewise, the round outer diameter can fit snugly inside a tube to create a piston-like arrangement. Mechanical elements in manufacturing often rely on magnets to ensure moving parts engage and disengage in the correct positions. Complex machinery relies on precision if stray mechanical apparatus is allowed to vary from their intended path the results can be debilitating.

Neodymium rings are also the most common form of magnet to be found in sensors such as security gates, alarm systems and security doors. Permanent magnets provide a powerful holding power that is not reliant on electricity or any other external power source. This makes them an ideal choice for these types of systems as they need to withstand the potential for a failure of the power source and attempt to circumnavigate a security system.

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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.