Reviewed by Tristan
I recommend this product
good quality
Arrived on time an tracking update was excellent.
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Neodymium Ring Magnet - (OD)5mm x (ID)2.5mm x (H)4mm | N42UH | Diametrically Magnetised
Product code: 23023A
$1.82buy 10 to 99 itemsand
save 10%
$1.82buy 100+ itemsand
save 33%
Total
$2.03
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Neodymium Ring Magnet - (OD)5mm x (ID)2.5mm x (H)4mm | N42UH | Diametrically Magnetised
Rated 5.0 out of 5
Product Code
23023A
Pull Force*
0.789 kg
Weight
1 gm
Style
Rare Earth Ring magnet
Coating
Nickel (Ni)
Direction of Magnetisation
Diametrically Magnetised
Dimensions
Outside Diameter:5mm, Inside Diameter:2.5mm, Thickness:4mm
*Measured against up to 10mm mild steel.
Magnetic Product Description:
This small rare earth ring magnet has an outside diameter of 5mm, an inside diameter of 2.5mm and a height or thickness of 4mm. It has a pull force of 789 grams. It is identified by the AMF magnet part number 23023A.
Uses for our Rare Earth Ring Magnets:
This small Neodymium Ring magnet is unusually magnetised through the diameter or in other words Diametrically Magnetised. It is also manufactured in a very high-grade N42 high temperature material that is heat resistant up to 180º Celcius. Magnets like this are for specialised commercial processes and for use in component parts that may be subject to high temperatures that would cause normal grade magnets to become demagnetised and fail. Small Ring magnets are found in products like electronic communication equipment, laptop computers and smart devices.
No FAQ available
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.
