Ringmagnet with counterbore Ø 20.0 mm N42 - OFFER

Preview: Ringmagnet with counterbore Ø 20.0 mm N42 - OFFER

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Quantity	Price / pcs
from 5 pcs	€1.70 *
from 15 pcs	€1.50 *
from 60 pcs	€1.35 *
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5 pieces: € *

Item number: RMS-20x4.5x04-G-SP
EAN: 4250538422997
Manufacturer: magnets4you
Packaging unit: 5 pieces
Available on stock: 815 pieces

Inexpensive ring magnet made of neodymium with counterbore. In our standard range, we only offer... more

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Product information

Inexpensive ring magnet made of neodymium with counterbore. In our standard range, we only offer this version with a nickel coating. We can supply a small remaining quantity with a gold coating due to a customised production.

This ring magnet with a 90° counterbore made of neodymium can be securely screwed on with a countersunk head screw. The 4.5 mm hole is designed for a screw with a diameter of 4 mm.

The south pole of this magnet is on the counterbore side.

Note: You cannot use two of these magnets in pairs, i.e. the magnets do not adhere to each other with the countersunk side, but repel each other. If this magnet is only to adhere to metal, the magnetisation direction/polarity is irrelevant.

Note: Neodymium magnets can break if too much force is applied. We recommend a maximum tightening torque of 2 Nm when screwing on this magnet.

Technical specifications

total diameter D	20,0 mm
inner ring d1	4,5 mm
Gesamthöhe H	4,0 mm
material	Neodym
temperature max.	80 ° C
quality of magnetisation	N42
tolerance	0.1 mm
direction of magnetisation	axial
coating	Gold
magnetic force	6,000 kg
Gewicht	0,009 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 (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.