Neodymium Block Magnet - 25mm x 7mm x 3mm | N50
Same Day Dispatch
Order before 1pm to qualify for same day dispatch.
Neodymium Block Magnet – 25mm x 7mm x 3mm | N50
The Neodymium Block Magnet – 25mm x 7mm x 3mm | N50 is a premium rare earth permanent magnet that delivers exceptional magnetic performance in a slim, compact rectangular design. Manufactured from high-grade N50 neodymium iron boron (NdFeB), this magnet provides outstanding holding strength while maintaining a low-profile form factor, making it ideal for industrial, commercial, manufacturing, and DIY applications.
Measuring 25mm long, 7mm wide, and 3mm thick, this rectangular block magnet is perfect for applications where space is limited but strong magnetic force is essential. Its slim dimensions allow it to be recessed into timber, plastic, aluminium housings, acrylic, and other materials, making it an excellent choice for magnetic closures, product assembly, cabinetry, display systems, automation equipment, and custom engineering projects.
The magnet is axially magnetised through its 3mm thickness, positioning the north and south poles on the two 25mm x 7mm flat faces. This magnetisation direction produces a concentrated magnetic field across the largest surface area, delivering excellent face-to-face holding power and reliable magnetic performance.
Finished with a durable nickel-copper-nickel (Ni-Cu-Ni) triple-layer coating, this magnet is protected against corrosion and everyday wear while maintaining a polished silver finish suitable for professional applications.
Whether you're manufacturing products, designing automation equipment, building magnetic fixtures, or completing a DIY project, the 25mm x 7mm x 3mm N50 Neodymium Block Magnet offers dependable, long-lasting magnetic performance.
Key Features
- Premium N50 grade neodymium rare earth magnet
- Dimensions: 25mm x 7mm x 3mm
- Slim rectangular block design
- High magnetic strength for its compact size
- Axially magnetised through the 3mm thickness
- North and south poles located on the 25mm x 7mm faces
- Durable nickel-copper-nickel (Ni-Cu-Ni) plated finish
- Excellent corrosion resistance for indoor applications
- Precision manufactured for consistent performance
- Suitable for industrial, commercial, and DIY use
Common Applications
- Magnetic cabinet catches
- Product manufacturing
- Retail displays
- Engineering fixtures and jigs
- Industrial automation
- Robotics
- Magnetic positioning systems
- Signage
- Prototype development
- Workshop organisation
Ideal For
- Engineers
- Product designers
- OEM manufacturers
- Cabinet makers
- Automation specialists
- Robotics developers
- Maintenance technicians
- Research laboratories
- Fabricators
- DIY enthusiasts
Why Choose an N50 Neodymium Block Magnet?
The N50 grade offers exceptionally high magnetic energy, providing stronger holding performance than many standard neodymium grades while maintaining compact dimensions. This allows engineers and designers to reduce the size and weight of assemblies without compromising magnetic strength.
The 25mm x 7mm x 3mm profile provides an ideal balance between surface contact area and a slim installation depth. Its elongated rectangular shape makes it easy to integrate into magnetic latches, precision fixtures, display systems, automation equipment, and custom magnetic assemblies.
Because the magnet is magnetised through its 3mm thickness, the magnetic field is concentrated across the two large faces, providing reliable holding force and efficient magnetic coupling for a wide range of industrial and commercial applications.
Technical Specifications
- Product Type: Neodymium Block Magnet
- Material: Neodymium Iron Boron (NdFeB)
- Magnet Grade: N50
- Shape: Rectangular Block
- Length: 25mm
- Width: 7mm
- Thickness: 3mm
- Magnetisation: Axially magnetised through the 3mm thickness
- Pole Orientation: North and south poles on the 25mm x 7mm faces
- Coating: Nickel-Copper-Nickel (Ni-Cu-Ni)
- Finish: Polished silver nickel finish
- Magnet Type: Permanent Rare Earth Magnet
- Application: Holding, mounting, positioning, automation, product manufacturing, and engineering
Please Note
Neodymium magnets are extremely powerful for their size and should be handled with care. This N50 block magnet can attract steel objects or other magnets suddenly, creating pinch hazards and potentially causing damage if allowed to collide.
Actual holding force will vary depending on the thickness, finish, and condition of the mating steel surface. Air gaps, paint, coatings, rust, uneven contact, elevated temperatures, and sideways or peeling forces will reduce magnetic performance.
Neodymium magnets are hard but brittle. Do not drill, cut, machine, weld, or subject the magnet to heavy impact, as this may crack the magnet or damage its protective coating.
Keep away from children, pacemakers, medical implants, magnetic storage media, and sensitive electronic equipment that may be affected by strong magnetic fields.
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.
