Discmagnet Ø 20.0 x 3.0 mm N40 Gold - holds 3.9 kg

Quantity Price / pcs
from 5 pcs €1.35 *
from 15 pcs €1.19 *
from 40 pcs €1.06 *
from 80 pcs €0.99 *
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5 pieces: € *
  • SM-20x03-G
  • 4250538410017
  • magnets4you
  • 5 pieces
  • 1515 pieces

Technical specifications

coatingGold (Ni-Cu-Ni-Au) 
total diameter D20,0 mm
volume942 mm³
temperature max.80 ° C
quality of magnetisationN40 
tolerance+/- 0,1 mm
direction of magnetisation axial (parallel zur Höhe) 
weight0,007163 kg
magnetic force3,900 kg
total height H3,0 mm

Technical specifications for magnetization grade N40

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
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 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 "Discmagnet Ø 20.0 x 3.0 mm N40 Gold - holds 3.9 kg"
Durchschnittliche Kundenbewertung: (aus Kundenbewertungen)
15 Feb 2021

sehr gute magnete

3 Nov 2020

Halten sehen toll aus

16 Oct 2020

Tolle Magnete

5 Dec 2019

Sehr gutes Produkt. Die Anwendung kann leider nicht veröffentlicht werden.

12 Nov 2019

Alles Top

4 Nov 2019

Verwendung zur Positionsbestimmung eines Fusspedals für E-Piano mittels Hall-Effekt-Sensor. Ein Quadermagnet wäre hier wohl besser zu montieren (kleben) gewesen als ein Scheibenmagnet. Werde ich wohl noch bestellen.

21 May 2019


15 Feb 2019

Maßhaltung: TOP Aussehen: TOP Funktion: TOP

12 Dec 2018

Verwende die Magnete

9 Sep 2017

deutlich stärker als vergleichbare China Ware

9 Dec 2016

Alles bestens!

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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