Neodymium Countersunk Ring Magnet - (OD)22.5mm x (ID)4mm x (H)3mm | N45

Product code: R-OD22.5H3ID4(90deg)-N45

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$8.51buy 10 to 99 itemsand save 12%
$7.66buy 100+ itemsand save 20%

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Neodymium Countersunk Ring Magnet - (OD)22.5mm x (ID)4mm x (H)3mm | N45

Rated 5.0 out of 5
Based on 1 review
Product Code R-OD22.5H3ID4(90deg)-N45
Pull Force* 5.08 kgs
Weight 35 gm
Style Rare Earth Ring
Coating Nickel
Direction of Magnetisation Axially (through height)
Dimensions Outside Diameter:22.5mm, Inside Diameter:4mm, Thickness:3mm
*Measured against up to 10mm mild steel.

Magnetic Product Description:

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.

Uses for our Rare Earth Ring Magnets:

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.

average rating 5.0 out of 5
Based on 1 review
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1 Review
Reviewed by Edward M.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Neodymium ring magnets

The magnets seem ideally suited to my purpose but the postage was very slow. They only arrived today. The first magnets I ordered came within a few days. Do they come from NSW or SA?

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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.