Reviewed by Tristan
I recommend this product
good quality
Arrived on time an tracking update was excellent.
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Neodymium Ring Magnet - 5mm (OD) x 2.5mm (ID) x 4mm (H) | N42UH | High Temperature ≤ 180°C | Diametrically Magnetised
Product code: 23023A
$1.73for 1 to 9 items
$1.54buy 10 to 99 itemsand
save 10%
$1.14buy 100+ itemsand
save 34%
Total
$1.73
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Neodymium Ring Magnet - 5mm (OD) x 2.5mm (ID) x 4mm (H) | N42UH | High Temperature ≤ 180°C | Diametrically Magnetised
Rated 5.0 out of 5
Product Code
23023A
Pull Force*
0.712 kg
Weight
1 gm
Style
Rare Earth Ring magnet
Grade
N42UH
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 (OD) of 5mm, an Inside Diameter (ID) of 2.5mm, and Height (H) or Thickness (T) of 4mm. This magnet is N42UH grade and can withstand temperatures up to 180°C. It is diametrically magnetised and has a pull force of 710 grams. It is identified by the AMF magnet part number 23023A.
Uses for our Rare Earth ring magnets:
This Diametrically magnetised ring is small and able to withstand higher than average operating temperatures (up to 180°C) due to its UH Magnetic Grade that is applied in the factory. Magnets with these unusual characteristics are mostly found in specially designed equipment or in experimental and scientific research fields. Industrial or Aeronautical sensing devices and gauges where unusual movements need to be monitored may use diametrically magnetised rings in their operation. Permanent magnets can be influenced by electromagnetic fields and electrical charges to create a physical response or reaction. This phenomenon is applied throughout the modern electronics, computing and telecommunications industries.
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.
