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Ringmagnet Ø 18.0 x 10.0 x 4.0 mm N40 nickel - holds 4.4 kg

Product information "Ringmagnet Ø 18.0 x 10.0 x 4.0 mm N40 nickel - holds 4.4 kg"

Technical specifications

Adhesive force: 4,4 kg
Coating: Nickel (Ni-Cu-Ni)
Diameter: 18 mm
Height H: 4 mm
Inner diameter: 10 mm
Magnetization direction: axial (parallel to height)
Magnetization quality: N40
Material: Neodymium
Maximum temperature: 80 °C
Tolerance: +/- 0,1 mm
Volume: 704 mm³
Weight: 5,35 g

Technical specifications for magnetization grade N40

Material Remanence Coercivity Energy product Maximum temperature
  Br bHc iHc (BxH)max  
  Gauss (G) Tesla (T) typ. kOe kA/m kOe kA/m MGOe kJ/m 3  
N40 12600-12900 1.26-1.29 10.5-12.0 860-955 ≥  12 ≥  955 38-40 303-318 ≤  80

The product conforms to the European RoHS Community legislation

The product conforms to the European RoHS Community legislation (2002/95/EC - RoHS - Restriction of Hazardous Substances) relating to the use and the employment of certain hazardous substances in electrical and electronic devices.

Safety Notice

NdFeB magnets are hard and brittle. Especially with thinner dimensions / higher adhesive forces, these can easily break or splinter! An uncontrolled impact of two magnets as well as an external, mechanical shock or pressure load should therefore be avoided!

Determination of the magnetic force

The adhesive force of our magnets is determined at room temperature on a polished plate made of steel S235JR (ST37) with a thickness of 10 mm by the vertical withdrawal of the magnet (1kg ~ 10 N). A different value down to -10% compared to the specified value is possible in exceptional cases. In general, the value is exceeded. Please note that for thinner, painted and not absolute plan undergrounds the adhesive force represents only one raction of the specified values.

10 of 13 reviews

Average rating of 4.9 out of 5 stars


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10 July 2016 12:46

Review with rating of 5 out of 5 stars

Ich verwende diese Magnete für diverse Sachen im Wohnmobil. Die Qualität passt bis jetzt.

27 September 2016 20:08

Review with rating of 5 out of 5 stars

Very good Service

24 August 2017 09:03

Review with rating of 5 out of 5 stars

Diese und die anderen Magneten verwende ich als Teil von Halte- und Positionierungseinrichtungen für schwierig hanhabbare Objekte in der Mikro- und Makrophotograhie.

4 November 2017 13:21

Review with rating of 5 out of 5 stars

Die Magneten werden für die Befestigung eines Gitters auf einem Blech verwendet. Der Innendurchmesser entspricht genau der Größe der Luftlöcher des Bleches. Super Magnetwirkung.

6 July 2018 07:59

Review with rating of 5 out of 5 stars

Bergen metallischer Gegenstände

18 September 2018 18:09

Review with rating of 5 out of 5 stars

Sehr starke Magnete. Für schwere Lasten gut geeignet. Verwende die Magnete zum Fixieren von Teilen zum bohren.

30 April 2019 20:14

Review with rating of 5 out of 5 stars

Alles bestens. Magnete sind super!

30 April 2019 20:14

Review with rating of 5 out of 5 stars

Alles bestens. Magnete sind super!

8 August 2019 11:59

Review with rating of 5 out of 5 stars

Tutto perfetto!

20 September 2019 06:57

Review with rating of 5 out of 5 stars

Probe als Ersatzteil