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Neodymium Half Ring Assembly OD28mm x H9mm N42

Product code: MARD28H9

$23.95for 1 to 9 items
$20.55buy 10 to 99 itemsand save 14%
$19.17buy 100+ itemsand save 19%

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Neodymium Half Ring Assembly OD28mm x H9mm N42

Product Code MARD28H9

Magnetic Ring Assembly w/ 2 NdFeB Half Disc-Shaped Magnets Attached to Steel Washer
2 half disc-shaped magnets with one NORTH and one SOUTH face on top
2x Half neo disc magnet: D28x6mm, NiCUNi, N42 
Metal ring plate: soft iron backing plate OD28x3mm (+/-0.3mm)

Uses for our Two Half Disc Magnet with Metal Ring Assembly

This unique magnetic assembly bonds extremely well to steel surfaces. The opposing North and South poles of the two half disc magnets create a strong magnetic field. The channel space or cutout area (12mm l x10mm w x5mm h)allows cable, rope or wiring to be held securely to a vertical or horizontal metal surface. This can be helpful in the fitting and securing of media cabling or other vital electrical wiring such as those used for CCTV equipment or security lighting. The round hole diameter is 12mm and can be used as another access point for cabling or for attaching the magnet to another type of surface. NB. The metal ring surface is not magnetic.


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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.