Neodymium Cylinder Magnet 4.76mm x 9.52mm N50
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Neodymium Cylinder Magnet – 4.76mm x 9.52mm | N50
The Neodymium Cylinder Magnet – 4.76mm x 9.52mm | N50 is a premium rare earth permanent magnet designed for precision engineering, industrial manufacturing, electronics, and automation applications. Manufactured from high-performance N50 grade neodymium iron boron (NdFeB), this compact cylinder magnet delivers exceptional magnetic strength while maintaining a slim and lightweight profile.
Measuring 4.76mm (3/16") in diameter and 9.52mm (3/8") in length, this precision-machined magnet offers a practical 2:1 length-to-diameter ratio, making it ideal for installations inside drilled holes, tubular housings, sensor assemblies, actuators, and compact mechanical systems. Its high magnetic energy allows designers and engineers to achieve outstanding holding performance without increasing component size.
This magnet is axially magnetised through its 9.52mm length, meaning the north and south poles are located on the two circular end faces. This pole orientation creates a focused magnetic field that is ideal for magnetic sensing, reed switch activation, locating systems, magnetic couplings, and end-to-end holding 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 silver finish. Whether you're manufacturing electronic products, developing automation systems, building laboratory equipment, or designing custom OEM assemblies, the 4.76mm x 9.52mm N50 Neodymium Cylinder Magnet delivers reliable long-term performance.
Key Features
- Premium N50 grade neodymium rare earth magnet
- Dimensions: 4.76mm diameter x 9.52mm length
- Precision cylindrical design
- Exceptional magnetic strength for its size
- Axially magnetised through the 9.52mm length
- North and south poles located on the circular end faces
- High magnetic energy density
- Durable nickel-copper-nickel (Ni-Cu-Ni) plated finish
- Precision manufactured for dimensional consistency
- Suitable for industrial, commercial, and precision engineering applications
Common Applications
- Reed switch activation
- Magnetic sensors
- Industrial automation
- Robotics
- Electronics manufacturing
- Medical devices
- Precision positioning systems
- Scientific instruments
- Product prototypes
- Custom OEM assemblies
Ideal For
- Engineers
- OEM manufacturers
- Electronics designers
- Robotics developers
- Automation specialists
- Medical equipment manufacturers
- Product development teams
- Research laboratories
- Precision fabrication workshops
- DIY engineering projects
Why Choose an N50 Neodymium Cylinder Magnet?
The N50 grade offers exceptionally high magnetic energy, making it an excellent choice for applications where maximum holding power is required within a compact component. Its superior magnetic performance enables designers to reduce the overall size and weight of assemblies while maintaining strong magnetic force.
The 4.76mm x 9.52mm dimensions create a slim cylindrical profile that fits easily into precision-machined holes, housings, shafts, and miniature assemblies. Its 2:1 aspect ratio provides excellent alignment and stability, making it particularly suitable for locating systems, magnetic couplings, linear sensors, and automation equipment.
Because the magnet is magnetised through its length, the magnetic field is concentrated on the circular end faces, delivering reliable end-to-end attraction and consistent performance for holding, positioning, switching, and sensing applications.
Technical Specifications
- Product Type: Neodymium Cylinder Magnet
- Material: Neodymium Iron Boron (NdFeB)
- Magnet Grade: N50
- Shape: Cylinder
- Diameter: 4.76mm
- Length: 9.52mm
- Magnetisation: Axially magnetised through the 9.52mm 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 4.76mm x 9.52mm N50 cylinder magnet can attract nearby steel objects or other magnets unexpectedly, 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 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.
