Neodymium Disc Magnet 50mm x 25mm N45
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Neodymium Disc Magnet – 50mm x 25mm | N45
The Neodymium Disc Magnet 50mm x 25mm | N45 is an exceptionally powerful rare earth permanent magnet designed for heavy-duty industrial, engineering, manufacturing, and commercial applications. Manufactured from premium N45-grade Neodymium Iron Boron (NdFeB), this large disc magnet measures 50mm in diameter and 25mm thick, delivering outstanding magnetic holding force and a highly concentrated magnetic field for demanding applications.
Its substantial size and premium N45 magnetic grade make it ideal for applications requiring maximum holding power, including magnetic clamping systems, lifting devices, heavy-duty fixtures, automation equipment, magnetic separators, scientific research, and custom engineering projects. The magnet is axially magnetised, with the north and south poles located on the two flat circular faces, providing maximum magnetic performance when used against a ferrous steel surface or paired with another magnet.
Finished with a durable nickel-copper-nickel (Ni-Cu-Ni) coating, this magnet offers excellent protection against corrosion, oxidation, and everyday wear while maintaining a bright, polished appearance suitable for long-term industrial use.
Whether you're designing high-performance magnetic assemblies, building industrial machinery, manufacturing specialised equipment, or conducting research, the 50mm x 25mm N45 Neodymium Disc Magnet provides exceptional strength, reliability, and long-lasting performance.
Key Features
- Premium N45-grade neodymium rare earth magnet
- Dimensions: 50mm diameter x 25mm thick
- Extremely powerful magnetic holding force
- Axially magnetised for maximum face-to-face magnetic performance
- Durable nickel-copper-nickel (Ni-Cu-Ni) protective coating
- Excellent corrosion and oxidation resistance
- Precision manufactured for consistent magnetic performance
- High-strength permanent magnet
- Suitable for demanding industrial, engineering, and commercial applications
Common Applications
- Heavy-duty magnetic clamping
- Industrial lifting systems
- Magnetic separators
- Automation and robotics
- Manufacturing equipment
- Scientific and laboratory equipment
- Magnetic fixtures and jigs
- OEM product manufacturing
- Product testing and prototyping
- Custom engineering projects
Ideal For
- Mechanical engineers
- Industrial manufacturers
- OEM equipment builders
- Automation specialists
- Scientific researchers
- Product designers
- Maintenance professionals
- Fabricators
- Universities and research laboratories
- Advanced engineering workshops
Why Choose a 50mm x 25mm N45 Neodymium Disc Magnet?
The 50mm x 25mm N45 Neodymium Disc Magnet is designed for applications where maximum magnetic strength and reliability are critical. Its large diameter provides a substantial magnetic contact area, while the 25mm thickness produces a deep and powerful magnetic field capable of delivering exceptional holding performance.
Manufactured from premium N45-grade neodymium, this magnet offers significantly greater magnetic strength than ferrite or ceramic magnets of comparable size, allowing engineers and manufacturers to create compact yet highly effective magnetic systems. It is particularly well suited to heavy-duty holding, magnetic separation, industrial automation, tooling, and specialist engineering applications where dependable magnetic performance is essential.
Technical Specifications
- Material: Neodymium Iron Boron (NdFeB)
- Magnet Grade: N45
- Shape: Disc
- Diameter: 50mm
- Thickness: 25mm
- Magnetisation: Axial (through the thickness)
- Coating: Nickel-Copper-Nickel (Ni-Cu-Ni)
- Magnet Type: Permanent Rare Earth Magnet
Please Note
This is an extremely powerful rare earth magnet and should be handled with extreme care. Due to its size and magnetic strength, it can attract steel objects or other magnets with considerable force, creating serious pinch hazards and potentially causing the magnet to chip, crack, or shatter if allowed to collide.
Maximum holding force is measured under ideal laboratory conditions using a clean, flat, thick mild steel surface with full face-to-face contact and a direct vertical pull. Actual magnetic performance will vary depending on the thickness and quality of the steel, air gaps, coatings, mounting configuration, operating temperature, and direction of the applied load.
Keep away from children, as powerful magnets present a serious swallowing hazard. Keep away from pacemakers, implanted medical devices, sensitive electronic equipment, and magnetic storage media. Neodymium magnets are hard but brittle and must not be drilled, machined, or struck with force. Due to the magnet's exceptional strength, protective gloves and eye protection are recommended during handling. Avoid prolonged exposure to corrosive environments or temperatures exceeding the recommended operating range for standard N45 neodymium magnets to maximise performance and service life.
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. We 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.
