Neodymium Cylinder Magnet 5mm x 12mm N45
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Neodymium Cylinder Magnet – 5mm x 12mm | N45
The Neodymium Cylinder Magnet – 5mm x 12mm | N45 is a premium rare earth permanent magnet designed to provide powerful magnetic performance in a compact, elongated cylindrical profile. Manufactured from high-quality N45 grade neodymium iron boron (NdFeB), this magnet offers an excellent combination of magnetic strength, reliability, and durability for industrial, commercial, and precision engineering applications.
Measuring 5mm in diameter and 12mm in length, this precision cylinder magnet is ideal for applications requiring a slim magnetic component with exceptional holding power. Its narrow profile allows it to fit neatly into drilled holes, tubular housings, actuators, sensor assemblies, robotics, automation equipment, and custom OEM products where installation space is limited.
This magnet is axially magnetised through its 12mm length, positioning the north and south poles on the two circular end faces. This pole orientation creates a concentrated magnetic field at each end of the cylinder, making it highly effective for magnetic holding, positioning, reed switch activation, magnetic couplings, and precision sensing applications.
Protected by a durable nickel-copper-nickel (Ni-Cu-Ni) triple-layer coating, the magnet offers excellent resistance to corrosion and everyday wear while maintaining a bright, polished silver finish. Whether you're manufacturing industrial equipment, developing new products, or completing precision engineering projects, the 5mm x 12mm N45 Neodymium Cylinder Magnet delivers dependable long-term performance.
Key Features
- Premium N45 grade neodymium rare earth magnet
- Dimensions: 5mm diameter x 12mm length
- Slim cylindrical design
- Strong permanent magnetic performance
- Axially magnetised through the 12mm length
- North and south poles located on the circular end faces
- Excellent strength-to-size ratio
- Durable nickel-copper-nickel (Ni-Cu-Ni) plated finish
- Precision manufactured for consistent quality
- Suitable for industrial, commercial, and engineering applications
Common Applications
- Magnetic sensors
- Reed switch activation
- Industrial automation
- Robotics
- Magnetic couplings
- Precision positioning systems
- Electronic devices
- Scientific instruments
- Product manufacturing
- Custom OEM assemblies
Ideal For
- Engineers
- OEM manufacturers
- Automation specialists
- Electronics designers
- Robotics developers
- Product designers
- Research laboratories
- Maintenance technicians
- Precision fabricators
- Prototype development
Why Choose an N45 Neodymium Cylinder Magnet?
The N45 grade provides an excellent balance of magnetic strength and cost-effectiveness, making it one of the most widely used neodymium grades across engineering and manufacturing industries. It delivers dependable magnetic performance while remaining suitable for a broad range of commercial and industrial applications.
The 5mm x 12mm dimensions create a compact cylindrical magnet with a practical elongated profile, making it ideal for installations requiring deeper insertion into housings or improved alignment within precision assemblies. Its slim diameter also allows it to be incorporated into narrow components without compromising magnetic performance.
Because the magnet is magnetised through its length, the magnetic field is concentrated on the circular end faces. This configuration provides excellent end-to-end attraction and consistent performance in magnetic holding, locating, sensing, switching, and coupling applications.
Technical Specifications
- Product Type: Neodymium Cylinder Magnet
- Material: Neodymium Iron Boron (NdFeB)
- Magnet Grade: N45
- Shape: Cylinder
- Diameter: 5mm
- Length: 12mm
- Magnetisation: Axially magnetised through the 12mm length
- Pole Orientation: North and south poles on the circular end faces
- Coating: Nickel-Copper-Nickel (Ni-Cu-Ni)
- Finish: Polished silver nickel finish
- Magnet Type: Permanent Rare Earth Magnet
- Application: Holding, positioning, sensing, automation, electronics, manufacturing, and precision engineering
Please Note
Neodymium magnets are extremely powerful for their size and should always be handled carefully. This 5mm x 12mm N45 cylinder magnet can attract nearby steel objects or other magnets suddenly, creating pinch hazards and potentially causing the magnet to chip or crack if allowed to collide.
Actual holding force depends 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 can significantly reduce magnetic performance.
Neodymium magnets are hard but brittle. Do not drill, cut, machine, weld, or subject the magnet to heavy impacts, as this may damage both the magnet and 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.
