Neodymium Disc Magnet 25.4mm x 12.7mm N45
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Neodymium Disc Magnet – 25.4mm x 12.7mm | N45
The Neodymium Disc Magnet 25.4mm x 12.7mm | N45 is a premium rare earth permanent magnet designed to deliver exceptional magnetic strength for demanding industrial, commercial, engineering, and manufacturing applications. Manufactured from high-performance N45-grade Neodymium Iron Boron (NdFeB), this magnet measures 25.4mm (1 inch) in diameter and 12.7mm (½ inch) thick, making it an excellent choice for heavy-duty holding, clamping, positioning, and magnetic assembly applications.
With its larger diameter and substantial thickness, this disc magnet generates a deep, concentrated magnetic field capable of providing outstanding holding force while maintaining a compact footprint. The magnet is axially magnetised, meaning the north and south poles are located on the two flat circular faces, ensuring maximum magnetic performance when mounted against a ferrous steel surface or used in stacked configurations.
Protected by a durable nickel-copper-nickel (Ni-Cu-Ni) coating, the magnet offers excellent resistance to corrosion, oxidation, and general wear, making it suitable for long-term use in a wide range of indoor and light-duty industrial environments.
Whether you're designing automation equipment, manufacturing magnetic fixtures, building machinery, or creating custom engineering solutions, the 25.4mm x 12.7mm N45 Neodymium Disc Magnet delivers powerful, reliable, and long-lasting magnetic performance.
Key Features
- Premium N45-grade neodymium rare earth magnet
- Dimensions: 25.4mm diameter x 12.7mm thick (1" x ½")
- Large disc design for exceptional magnetic holding power
- Axially magnetised for maximum face-to-face magnetic strength
- Durable nickel-copper-nickel (Ni-Cu-Ni) protective coating
- Excellent resistance to corrosion and oxidation
- Precision manufactured for consistent magnetic performance
- High-strength permanent magnet
- Suitable for industrial, commercial, and engineering applications
Common Applications
- Heavy-duty magnetic fixtures and jigs
- Industrial automation equipment
- Magnetic clamping systems
- Machinery and OEM manufacturing
- Robotics and automation
- Magnetic separation equipment
- Engineering prototypes
- Workshop tooling
- Scientific and laboratory equipment
- Custom magnetic assemblies and fabrication projects
Ideal For
- Mechanical engineers
- Industrial manufacturers
- Automation specialists
- OEM equipment manufacturers
- Product designers
- Maintenance technicians
- Fabricators
- Research and development teams
Why Choose a 25.4mm x 12.7mm N45 Neodymium Disc Magnet?
The 25.4mm x 12.7mm N45 Neodymium Disc Magnet offers an excellent combination of high magnetic strength, compact dimensions, and industrial durability. The premium N45 grade provides greater magnetic energy than standard lower-grade neodymium magnets, making it ideal for applications where maximum holding force is required without increasing the overall size of the assembly.
Its 1-inch diameter and ½-inch thickness make it particularly popular in industrial equipment, magnetic mounting systems, automation, tooling, engineering prototypes, and custom manufacturing projects that demand dependable, long-term magnetic performance.
Technical Specifications
- Material: Neodymium Iron Boron (NdFeB)
- Magnet Grade: N45
- Shape: Disc
- Diameter: 25.4mm (1 inch)
- Thickness: 12.7mm (½ inch)
- Magnetisation: Axial (through the thickness)
- Coating: Nickel-Copper-Nickel (Ni-Cu-Ni)
- Magnet Type: Permanent Rare Earth Magnet
Please Note
This is a high-strength rare earth magnet and should be handled carefully. Due to its powerful magnetic field, it can attract steel objects or other magnets suddenly and with considerable force, creating pinch hazards and potentially causing the magnet to chip or fracture if allowed to collide.
Maximum holding force is measured under ideal conditions using a clean, flat, thick mild steel surface with full face-to-face contact. Actual holding performance will vary depending on the steel thickness, air gap, surface finish, mounting arrangement, and operating environment.
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. Do not drill, machine, or strike the magnet, as neodymium is hard but brittle and may crack or shatter under excessive impact or mechanical stress. For optimum performance and service life, avoid prolonged exposure to corrosive environments or temperatures exceeding the recommended operating range for standard N45 neodymium magnets.
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.
