Neodymium Ring - 18mm x 10mm x 4mm

Product code: 23008A

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Neodymium Ring - 18mm x 10mm x 4mm

Rated 5.0 out of 5
Based on 3 reviews
Product Code 23008A
Pull Force* 4 kg
Weight 7 gm
Style Rare Earth Ring magnet
Gauss 4013
Grade N38
Tolerance +/- 0.05mm
Coating Nickel (NiCuNi)
Direction of Magnetisation Axially magnetised thru the 4mm
Dimensions Outside Diameter:18mm, Inside Diameter:10mm, Thickness:4mm
*Measured against up to 10mm mild steel.
Neodymium Ring - 18mm x 10mm x 4mm

Magnetic Product Description:

This rare earth ring magnet has an outside diameter of 18mm, an inside diameter of 10mm and a thickness of 4mm. It is identified by the AMF magnet part number 23008A.


Uses for our rare earth ring magnets:

All Neodymium magnets have more magnetic intensity than other magnetic materials. Ring-shaped magnets have a reduction in volume because of the void, but their ability to fit over shafts or moldings for positioning, make them easy to incorporate into many of today's electronic product designs where light weight and high performance is a mandatory requirement for new and innovative devices. Rare Earth magnets are found in the world's newest technologies, from scientific research and development to the design and manufacture of electric and hybrid automotive technology. While the importance of Permanent Neodymium- based Ring magnets on the development of new technology designs is not to be underestimated, there are many low-tech, yet equally convenient applications where they also assist to make life easier. Simple attachment methods can be applied to Ring magnets because of the void area. String, rope, nails and cable ties can quickly hold a Ring magnet in position for temporary or occasional use. This can be convenient in places where other methods of attachment are impractical or unavailable due to remoteness.

Neodymium Ring - 18mm x 10mm x 4mm (23008A)

Grade
N38 N/A
Max Operating Temperature °C
<=80 N/A
Remanence Br(T)
1.23-1.3 N/A
Remanence Br(kGs)
12.3-13 N/A
Coercivity bHc(kA/m)
>=859 N/A
Coercivity bHc(Oe)
>=10.8 N/A
Intrinsic Coercivity iHc(kA/m)
>=955 N/A
Intrinsic Coercivity iHc(Oe)
>=12 N/A
Max Energy Product(BH)max(KJ/m)
286-318 N/A
Max Energy Product(BH)max(MGOe)
36-40 N/A
Grade N38 N/A
Max Operating Temperature °C <=80 N/A
Remanence Br(T) 1.23-1.3 N/A
Remanence Br(kGs) 12.3-13 N/A
Coercivity bHc(kA/m) >=859 N/A
Coercivity bHc(Oe) >=10.8 N/A
Intrinsic Coercivity iHc(kA/m) >=955 N/A
Intrinsic Coercivity iHc(Oe) >=12 N/A
Max Energy Product(BH)max(KJ/m) 286-318 N/A
Max Energy Product(BH)max(MGOe) 36-40 N/A

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.

average rating 5.0 out of 5
Based on 3 reviews
  • 5 Stars
    3 Reviews
  • 4 Stars
    0 Reviews
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
100% of reviewers would recommend this product to a friend
3 Reviews
Reviewed by Milky J.
I recommend this product
Rated 5 out of 5
Review posted

Awesome

Awesome 936

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Reviewed by Milky j.
I recommend this product
Rated 5 out of 5
Review posted

Great

Awesome

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Reviewed by Michael
I recommend this product
Rated 5 out of 5
Review posted

Excellent product

I used these ring magnets to secure the rear view mirrors on a BMW motorcycle. The ring shape allowed me to use the existing pins to accurately locate the mirror and the magnetic 'grip' is more than sufficient to secure the mirrors. The magnets are accurately measured and described. Excellent product.

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Neodymium Ring - 18mm x 10mm x 4mm

Magnetic Product Description:

This rare earth ring magnet has an outside diameter of 18mm, an inside diameter of 10mm and a thickness of 4mm. It is identified by the AMF magnet part number 23008A.


Uses for our rare earth ring magnets:

All Neodymium magnets have more magnetic intensity than other magnetic materials. Ring-shaped magnets have a reduction in volume because of the void, but their ability to fit over shafts or moldings for positioning, make them easy to incorporate into many of today's electronic product designs where light weight and high performance is a mandatory requirement for new and innovative devices. Rare Earth magnets are found in the world's newest technologies, from scientific research and development to the design and manufacture of electric and hybrid automotive technology. While the importance of Permanent Neodymium- based Ring magnets on the development of new technology designs is not to be underestimated, there are many low-tech, yet equally convenient applications where they also assist to make life easier. Simple attachment methods can be applied to Ring magnets because of the void area. String, rope, nails and cable ties can quickly hold a Ring magnet in position for temporary or occasional use. This can be convenient in places where other methods of attachment are impractical or unavailable due to remoteness.

Neodymium Ring - 18mm x 10mm x 4mm (23008A)

Grade
N38 N/A
Max Operating Temperature °C
<=80 N/A
Remanence Br(T)
1.23-1.3 N/A
Remanence Br(kGs)
12.3-13 N/A
Coercivity bHc(kA/m)
>=859 N/A
Coercivity bHc(Oe)
>=10.8 N/A
Intrinsic Coercivity iHc(kA/m)
>=955 N/A
Intrinsic Coercivity iHc(Oe)
>=12 N/A
Max Energy Product(BH)max(KJ/m)
286-318 N/A
Max Energy Product(BH)max(MGOe)
36-40 N/A
Grade N38 N/A
Max Operating Temperature °C <=80 N/A
Remanence Br(T) 1.23-1.3 N/A
Remanence Br(kGs) 12.3-13 N/A
Coercivity bHc(kA/m) >=859 N/A
Coercivity bHc(Oe) >=10.8 N/A
Intrinsic Coercivity iHc(kA/m) >=955 N/A
Intrinsic Coercivity iHc(Oe) >=12 N/A
Max Energy Product(BH)max(KJ/m) 286-318 N/A
Max Energy Product(BH)max(MGOe) 36-40 N/A

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.

average rating 5.0 out of 5
Based on 3 reviews
  • 5 Stars
    3 Reviews
  • 4 Stars
    0 Reviews
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
100% of reviewers would recommend this product to a friend
3 Reviews
Reviewed by Milky J.
I recommend this product
Rated 5 out of 5
Review posted

Awesome

Awesome 936

Loading...
Was this helpful?
Reviewed by Milky j.
I recommend this product
Rated 5 out of 5
Review posted

Great

Awesome

Loading...
Was this helpful?
Reviewed by Michael
I recommend this product
Rated 5 out of 5
Review posted

Excellent product

I used these ring magnets to secure the rear view mirrors on a BMW motorcycle. The ring shape allowed me to use the existing pins to accurately locate the mirror and the magnetic 'grip' is more than sufficient to secure the mirrors. The magnets are accurately measured and described. Excellent product.

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Was this helpful?