Neodymium Ring Magnet – 20mm (OD) x 16mm (ID) x 18.5mm (H) | N42SH | Black Epoxy Coating | Multi-Pole Magnetisation | High Temperature ≤150ºC
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This high-performance Neodymium Ring Magnet is designed for applications requiring both strength and durability. With an outer diameter (OD) of 20mm, an inner diameter (ID) of 16mm, and a height of 18.5mm, it features N42SH grade neodymium, offering a superior magnetic pull force of 6.32 kilograms, even in challenging environments. This product is identified by product code 23004D.
- Multi-Pole Magnetisation: Provides enhanced holding power with multiple magnetic poles across the surface, ensuring consistent performance.
- Pull Force: 6.32 kilograms.
- Black Epoxy Coating: The durable coating protects against corrosion and mechanical wear, making it suitable for both industrial and outdoor use.
- High-Temperature Resistance: Engineered to withstand temperatures up to 150ºC, ideal for demanding applications involving heat.
Whether for mechanical systems, sensors, or electronics, this neodymium ring magnet is a reliable solution for a variety of high-performance tasks.
Typical Physical Properties
NB: Ranges are indicative for product category, please check individual products for specic values within that range.
Production Flow Diagram
Demagnetization Curves
Surface Treatment
The most common coating for Neodymium magnets is Nickel + Copper + Nickel (Ni + Cu + Ni). This coating offers the magnet relatively good protection from corrosion and passive applications. If the magnet will be exposed to moisture or liquid then consider the use of an organic coating such as Epoxy. A hard wearing coating, Epoxy is suited to applications where the magnet will come under some friction or knocking.
Range and Tolerance
Magnets are readily available in Blocks, Discs, Cylinders & Rings. AMF Magnetics specializes in the supply of short-run prototype magnets including Arc Segments, various magnetic orientations etc. If you need a magnet size that we don't carry in stock, submit a Design-a-Magnet enquiry for a quote on your custom magnet design.
Magnetic Properties
Neodymium magnets are offered in several different grades. The first section N30-54 has an operating temperature of up to 80 degrees. Most of our stock only goes up to N38. The second section, denoted with the "M" prefix after the grade has an operating temperature 100 degrees. After this the grades are "H", "SH", "UH" & "EH". In order for the magnet to withstand a higher operating temperature, during production more of the raw material PrNd is incorporated as these elements have a naturally occurring resistance to high temperatures.
Returns Policy
If you are not entirely satisfied with your purchase, we're here to help.
We have a 30 Day Returns policy at Frenergy Magnets. You may return your item within 30 days of receiving it to receive a refund.
The product/s must be unused and in the same condition you received them in. Please contact us at info@frenergy.com.au to initiate the returns process.
The buyer is responsible for the cost of returning the order.