Neodymium Cylinder Magnet 5mm x 8mm N45
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Neodymium Cylinder Magnet – 5mm x 8mm | N45
The Neodymium Cylinder Magnet – 5mm x 8mm | N45 is a premium rare earth permanent magnet designed for applications requiring exceptional magnetic strength in a compact cylindrical form. Manufactured from high-quality N45 grade neodymium iron boron (NdFeB), this precision magnet offers an excellent balance of magnetic performance, durability, and reliability for industrial, commercial, and precision engineering applications.
Measuring 5mm in diameter and 8mm in length, this slim cylinder magnet is ideal for installations where space is limited but dependable magnetic force is essential. Its compact dimensions make it suitable for automation systems, electronic devices, robotics, magnetic sensors, product manufacturing, scientific equipment, and custom OEM assemblies.
This magnet is axially magnetised through its 8mm length, placing the north and south poles on the two circular end faces. This pole orientation produces a concentrated magnetic field that is ideal for magnetic holding, positioning, reed switch activation, sensing, and magnetic coupling applications.
Finished with a durable nickel-copper-nickel (Ni-Cu-Ni) triple-layer coating, the magnet features a polished silver finish that helps protect the neodymium material from corrosion and everyday wear. Whether you're developing precision equipment, manufacturing products, or completing engineering projects, the 5mm x 8mm N45 Neodymium Cylinder Magnet delivers consistent, long-lasting magnetic performance.
Key Features
- Premium N45 grade neodymium rare earth magnet
- Dimensions: 5mm diameter x 8mm length
- Compact cylindrical design
- Strong permanent magnetic performance
- Axially magnetised through the 8mm 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 dimensional accuracy
- Suitable for industrial, commercial, and engineering applications
Common Applications
- Magnetic sensors
- Reed switch activation
- Robotics
- Industrial automation
- Magnetic couplings
- Electronic devices
- Precision positioning systems
- Scientific instruments
- Product manufacturing
- OEM assemblies
Ideal For
- Engineers
- OEM manufacturers
- Automation specialists
- Electronics designers
- Product developers
- Robotics engineers
- Research laboratories
- Maintenance technicians
- Precision fabricators
- DIY engineering projects
Why Choose an N45 Neodymium Cylinder Magnet?
The N45 grade provides an excellent combination of magnetic strength and value, making it a popular choice for professional engineering, manufacturing, and automation applications. Its high magnetic energy density allows compact assemblies to achieve powerful magnetic performance without increasing component size.
The 5mm x 8mm dimensions provide a practical elongated profile that fits easily into drilled holes, precision housings, tubular components, and compact mechanisms. This geometry is particularly useful for locating systems, magnetic switches, sensors, actuators, and product assemblies requiring reliable alignment and magnetic retention.
Because the magnet is magnetised through its length, the magnetic field is concentrated on the circular end faces, providing excellent end-to-end attraction and dependable performance for magnetic holding, positioning, sensing, and coupling applications.
Technical Specifications
- Product Type: Neodymium Cylinder Magnet
- Material: Neodymium Iron Boron (NdFeB)
- Magnet Grade: N45
- Shape: Cylinder
- Diameter: 5mm
- Length: 8mm
- Magnetisation: Axially magnetised through the 8mm 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 8mm 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 the magnet or 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.
