Neodymium Cylinder Magnet 5mm x 20mm N35
Same Day Dispatch
Order before 1pm to qualify for same day dispatch.
Neodymium Cylinder Magnet – 5mm x 20mm | N35
The Neodymium Cylinder Magnet – 5mm x 20mm | N35 is a precision rare earth permanent magnet designed to provide reliable magnetic performance in a slim, elongated cylindrical profile. Manufactured from premium N35 grade neodymium iron boron (NdFeB), this magnet offers an excellent balance of magnetic strength, durability, and affordability, making it suitable for a wide range of industrial, commercial, engineering, and DIY applications.
Measuring 5mm in diameter and 20mm in length, this cylinder magnet is ideal for installations requiring a narrow magnetic component with an extended reach. Its slender design allows it to fit into drilled holes, tubular housings, magnetic assemblies, automation equipment, and custom-engineered products where space is limited but dependable magnetic force is required.
The magnet is axially magnetised through its 20mm length, meaning the north and south poles are located on the two circular end faces. This magnetisation direction creates a concentrated magnetic field at each end of the cylinder, making it particularly effective for magnetic holding, positioning, reed switch activation, magnetic 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 provides excellent protection against corrosion and everyday wear. Whether you're manufacturing products, developing prototypes, building automation equipment, or creating precision engineering solutions, the 5mm x 20mm N35 Neodymium Cylinder Magnet delivers reliable long-term performance.
Key Features
- Premium N35 grade neodymium rare earth magnet
- Dimensions: 5mm diameter x 20mm length
- Long, slim cylindrical design
- Strong permanent magnetic performance
- Axially magnetised through the 20mm 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 holding systems
- Precision positioning
- Product manufacturing
- Scientific instruments
- Magnetic couplings
- Custom 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 N35 Neodymium Cylinder Magnet?
The N35 grade is one of the most widely used neodymium magnet grades, offering dependable magnetic performance at an economical price. It is an excellent choice for general-purpose engineering, manufacturing, automation, and product development applications where reliable magnetic strength is required.
The 5mm x 20mm dimensions create a long, narrow cylindrical profile that is ideal for insertion into deep drilled holes, tubular components, and precision housings. Its elongated design provides improved alignment within assemblies while maintaining a concentrated magnetic field at each end.
Because the magnet is magnetised through its length, the magnetic field is focused on the circular end faces, providing excellent end-to-end attraction and consistent performance for magnetic holding, sensing, switching, positioning, and coupling applications.
Technical Specifications
- Product Type: Neodymium Cylinder Magnet
- Material: Neodymium Iron Boron (NdFeB)
- Magnet Grade: N35
- Shape: Cylinder
- Diameter: 5mm
- Length: 20mm
- Magnetisation: Axially magnetised through the 20mm 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 20mm N35 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 both the magnet and its protective coating.
Keep away from children, pacemakers, medical implants, magnetic storage media, credit cards, 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.
