Neodymium Ring Magnet OD14mm x H3mm | Hole 9mm N38
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Neodymium Ring Magnet – OD14mm x 3mm | ID9mm | N38
The Neodymium Ring Magnet – OD14mm x 3mm | ID9mm | N38 is a compact, high-performance rare earth ring magnet designed for precision applications where space is limited but reliable magnetic strength is essential. Manufactured from premium N38 grade neodymium (NdFeB), this permanent magnet features a 14mm outer diameter, 9mm inner diameter, and 3mm thickness, making it ideal for mounting over shafts, bolts, tubes, bearings, and other cylindrical components.
Its slim ring profile and generous centre hole make it particularly well suited to engineering, electronics, automation, sensors, magnetic couplings, product assembly, and custom manufacturing projects. Despite its compact size, the N38 neodymium material delivers significantly greater magnetic performance than ferrite magnets of similar dimensions, allowing for smaller, lighter, and more efficient product designs.
The magnet is axially magnetised through its 3mm thickness, with the north and south poles located on the two flat circular faces. This magnetisation provides a concentrated magnetic field for secure attachment to ferrous materials and consistent performance in positioning, holding, and locating applications.
Protected by a durable nickel (Ni-Cu-Ni) triple-layer coating, the magnet offers excellent resistance to corrosion and everyday wear while maintaining a bright, polished finish. Whether you're developing prototypes, manufacturing precision equipment, or completing DIY projects, the OD14mm x ID9mm x 3mm N38 Neodymium Ring Magnet provides dependable magnetic performance in a compact package.
Key Features
- Premium N38 grade neodymium rare earth magnet
- 14mm outer diameter
- 9mm inner diameter
- 3mm thickness
- Slim ring profile with large centre hole
- Axially magnetised through the thickness
- Strong magnetic performance for its size
- Durable nickel (Ni-Cu-Ni) plated finish
- Precision manufactured for consistent quality
- Suitable for industrial, commercial, and DIY applications
Common Applications
- Magnetic couplings
- Electronics assemblies
- Sensor systems
- Robotics
- Precision positioning
- Product development
- Engineering fixtures
- Automation equipment
- Small mechanical assemblies
- Hobby and maker projects
Ideal For
- Engineers
- Product designers
- OEM manufacturers
- Electronics technicians
- Robotics developers
- Automation specialists
- Research laboratories
- Educational institutions
- Makers and hobbyists
- DIY enthusiasts
Why Choose an N38 Neodymium Ring Magnet?
The N38 grade provides excellent magnetic performance while offering a cost-effective solution for a wide variety of commercial and industrial applications. Its compact dimensions make it ideal for assemblies where installation space is limited but dependable magnetic strength is required.
The 14mm outer diameter, 9mm centre hole, and 3mm thickness create a lightweight yet versatile ring magnet that can be mounted over shafts, rods, tubes, or fasteners. This design makes it ideal for magnetic positioning systems, rotating mechanisms, locating devices, and precision engineering applications.
The durable nickel-plated finish helps protect the magnet against corrosion and handling damage, while the precision manufacturing process ensures consistent magnetic performance and dimensional accuracy across every unit.
Technical Specifications
- Product Type: Neodymium Ring Magnet
- Material: Neodymium (NdFeB)
- Magnet Grade: N38
- Shape: Ring
- Outer Diameter (OD): 14mm
- Inner Diameter (ID): 9mm
- Thickness (Height): 3mm
- Magnetisation: Axially Magnetised (through the 3mm thickness)
- Coating: Nickel (Ni-Cu-Ni)
- Reusable: Yes
- Application: Holding, positioning, mounting, sensing, automation, and precision engineering
Please Note
Neodymium magnets are extremely powerful for their size and should be handled carefully. They can attract steel objects or other magnets suddenly, creating pinch hazards and potentially causing the magnet to chip or crack if allowed to collide.
The 9mm centre hole is intended for mounting and positioning purposes. Avoid overtightening fasteners or applying excessive mechanical force, as neodymium magnets are hard but brittle.
Actual magnetic holding strength will vary depending on the thickness and condition of the mating steel surface, air gap, alignment, operating temperature, and application design.
Keep this magnet away from children, pacemakers, medical implants, magnetic storage media, and sensitive electronic devices. Do not drill, cut, or machine the magnet after manufacture, as this may permanently damage the magnet and its protective coating.
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.
