Product code: R-OD22.5H3ID4(90deg)-N45
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This neodymium magnetic ring has an outer diameter of 22.5mm, an inner diameter of 4mm and a height of 3mm. It is identified by the AMF Magnets part number R-OD10H1.5ID5.
This N45 grade Rare Earth ring magnet weighs just 35 grams yet has the holding power to attract up to 5.08 kilos of weight. This incredible power to weight ratio is the key characteristic that makes Rare Earth Neodymium magnets so attractive. Neodymium has allowed many modern technological advancements possible across a range of different fields including aeronautics, medicine and science. The superior magnetic field produced by these compact and lightweight permanent magnets has also supported the development of more practical consumer products which are smaller and with greater capabilities.
Ring magnets are commonly integrated into mechanical equipment as part of complex manufacturing equipment. Without the need to be attached to an external power supply, these Neo ring magnets provide constant and reliable magnetic power. This enables moving parts of the mechanical apparatus to be magnetically guided back into their correct position reducing damage and breakdowns in equipment.
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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.
The Pull Force listed for each magnet is based on lifting 10mm thick steel from a horizontal surface. Magnets on a vertical surface (of 10mm thick steel) are generally able to hold around only 30% of the pull force listed in the product description. This is due to the effects of gravity and the lack of friction between the surface and the shiny magnet. Read More
