Neodymium Ring Magnet OD19.4mm x H1.65mm | Hole 10mm | N38H | High Temperature ≤120ºC
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Neodymium Ring Magnets
Outside Diameter: 19.4mm
Height: 1.65mm
Inside Diameter: 10mm
Grade: N38
Coating: Nickel (Ni)
Magnetized Direction: Through height – 1.65mm
Neodymium magnets are the most powerful magnets available but are susceptible to failing when exposed to ambient temperatures above 80°C. This Ring is made using N38H grade Neodymium material which extends the range of operating temperature from standard 80°C to 120°C. This can resolve issues that occur in commercial processes or scientific environments where heat is generated that would cause lower grade Ring magnets to demagnetise.
Ring-shaped Neodymium magnets are, in many regards, the most versatile of all shapes. Although the central void reduces surface area and overall strength, it also provides more options for mechanical attachment and secure positioning inside many devices where Ring Magnets can sit on plastic mounting lugs or steel or non-ferrous spindles, and become actuators or react with electromagnetic fields inside electronic devices..They are used in electric motors, microphones, sensors, automotive components and hundreds of other modern-day devices.
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.