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Neodymium Ring - 20mm x 10mm x 8mm Epoxy (N45H)

More Information
Product Code 23013 N45H
Pull Force* 7.30 kg
Weight 14 gm
Style Rare Earth Ring magnet (N45H)
Grade N45 (H)
Temperature 120 Degrees
Coating Epoxy
Direction of Magnetisation Axially magnetised thru the 8mm
Tolerance +/- 0.05mm
Thickness 8mm
Inside Diameter 10mm
Outside Diameter 20mm

*Measured against up to 10mm mild steel.

$10.12 1 to 9 items
  • $8.10 buy 10 to 99 items and save 20%
  • $4.69 buy 100+ items and save 54%
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In stock
Prices are GST inclusive - Australia only.
Volume pricing available on request.

ring magnet dimensions

Magnetic Product Description:

This rare earth ring magnet has an outside diameter of 20mm, an inside diameter of 10mm and a thickness of 8mm. It has a pull force of 7.30 kg. It is identified by the AMF magnet part number 23013.

Uses for our rare earth ring magnets:

You may not think grains, like wheat and rice grown for human consumption are a perfect match for these neodymium ring 20mmx10mmx8mm epoxy coated magnets. Let us explain.

Harvest time for grains like wheat and rice is not the end, just the beginning of the end. For the grains it is the beginning of a long journey where they will encounter a lot of metal equipment and metal products, often helped along by magnets, including ring magnets.

In the first instance, the grain harvesters’ long horizontal threshing blades are often held securely, but not too securely in place with the assistance of powerful ring magnets. Helping with the regulated, rhythmic operation of huge scything blades, magnets also play another vital role. Ring magnets can act as a clutch, releasing their grip at a known force or pressure should the combine harvester’s valuable and finely machined grain cutting equipment jam on something strong, like tree stump or an animal carcass.

This ability of controlled slippage, or clutch function provided by magnetic engagement in an emergency, prevents in the initial stages at least, the transfer of mechanical power to the valuable blades while they are jammed. Direct power while the equipment is stuck could damage the harvester’s blades or its engine or both.

Ring magnets as a failsafe or circuit breaking system is highly valued by individuals or companies liable for the repair and downtime costs. The release force of ring magnets protecting combine harvesters is comparable to the release force required for the cook to remove a saucepan from its magnetic hold above the stove: they are both known in advance. A saucepan is required to boil or steam grains like wheat, oats and rice.

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