Ringmagnet Ø 40.0 x 25.0 x 5.0 mm N42 nickel - holds 12.1 kg

Quantity Price / pcs
To 2 pcs €5.82 *
from 3 pcs €5.30 *
from 10 pcs €4.77 *
from 20 pcs €4.60 *
from 40 pcs €4.37 *
from 250 pcs request a quote!

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  • RM-40x25x05-N
  • 4250538408854
  • magnets4you
  • 2822 pieces

Technical specifications

total diameter D40,0 mm
inner ring d125,0 mm
total height H5,0 mm
volume3829 mm³
temperature max.80 ° C
quality of magnetisationN42 
tolerance+/- 0,1 mm
direction of magnetisation axial (parallel zur Höhe) 
coatingNickel (Ni-Cu-Ni) 
magnetic force12,1 kg
weight0,0291 kg

Technical specifications for magnetization grade N42

Material Remanence Coercivity Energy product Maximum temperature
Br bHc iHc (BxH)max
Gauss (G) Tesla (T) kOe kA/m kOe kA/m MGOe kJ/m 3 °C
N42 12900-13200 1.29-1.32 10.8-12.0 860-955 ≥  12 ≥ 955 40-42 318-334 ≤  80

  • The product conforms to the European RoHS Community legislation

    The product conforms to the European RoHS Community legislation The product conforms to the European RoHS Community legislation (2002/95/EG - RoHS - Restriction of Hazardous Substances) relating to the use and the employment of certain hazardous substances in electrical and electronic devices.
    No subject to registration under the REACH Regulation.
  • 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.

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Customer evaluation for "Ringmagnet Ø 40.0 x 25.0 x 5.0 mm N42 nickel - holds 12.1 kg"
Durchschnittliche Kundenbewertung: (aus Kundenbewertungen)
4 Feb 2021

Der Magnet ist so wie in Shop beschrieben.

19 Oct 2020

Die Magnete sind gut und stark.

17 Oct 2020


17 Feb 2020

wird als haltemagnet für taschenlampe genützt

13 Feb 2020

Alles in bester Ordnung.

27 Dec 2019

Ich benötige die Magnete für alte Kopfhörer

26 Dec 2019

Kann ich jedem empfehlen.

28 Nov 2019

Gute Ware. Schnelle Lieferung.

30 Oct 2019


9 Sep 2019

Das Magnet wird für suchen und als Objekt an der Pinwand verwendet

9 Aug 2019

Top Produkt. Sehr gute Verarbeitung.

3 Jun 2019

Hier sind Kreativität und Fantasie keine Grenzen gesetzt. Großer Aufforderungscharakter zum Spielen und Experimentieren!

30 May 2019

Hervorragende Qualität! Optimal geeignet für flexible Fixierung und/oder physikalische Experimente!

19 Jun 2018

Mein Schlüsselbund fiel in der Küche zwischen Highboardschrank und Wand ( Zwischenraum ca. 3 cm

5 Dec 2017


5 Jul 2017


19 Dec 2016

Für meine Zwecke bestens.

27 Oct 2016

einwandfreie Qualität

15 Oct 2016

Alles super.

12 Oct 2016

alles Bestens - Vielen Dank

28 Jan 2016


8 Oct 2015

Hält gut:)

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  • magnets4you GmbH
  • Bgm.-Dr.-Nebel-Str. 15a
  • D-97816 Lohr a. Main
  • Tel.: +49 (0) 93 52 / 60 43 86 - 0