Neodymium Ring Magnet - (OD)19mm x (ID)8mm x (H)4mm

Product code: 23008

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Neodymium Ring Magnet - (OD)19mm x (ID)8mm x (H)4mm

Rated 5.0 out of 5
Based on 1 review
Product Code 23008
Pull Force* 4.7 kg
Weight 7 gm
Style Rare Earth Ring magnet
Coating Nickel (NiCuNi)
Direction of Magnetisation Axially magnetised thru the 4mm
Dimensions Outside Diameter:19mm, Inside Diameter:8mm, Thickness:4mm
*Measured against up to 10mm mild steel.

Magnetic Product Description:

This rare earth ring magnet has an outside diameter of 19mm, an inside diameter of 8mm and a height or thickness of 4mm. It is identified by the AMF magnet part number 23008.

Uses for our Rare Earth Ring Magnets:

Ring magnets have the ability to sit on shafts or on locating pins and create buffering forces between metal component parts that are used in specially designed suspension systems and low-friction bearing assemblies. Engineers design freight transport systems using magnets in a repelling configuration to reduce the impact on load-bearing equipment and protect it from the damaging friction and excessive wear they endure over long distances and long time periods. Maglev trains would not exist without this frictionless system of movement and would not be able to achieve the record speeds and smooth ride it is renowned for.

average rating 5.0 out of 5
Based on 1 review
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100% of reviewers would recommend this product to a friend
1 Review
Reviewed by James
I recommend this product
Rated 5 out of 5
Review posted


Very good quality, reasonable prices.

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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.