Neodymium Cylinder Magnet 5mm x 5mm N42UH | High Temperature ≤180ºC
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Neodymium Cylinder Magnet – 5mm x 5mm | N42UH High Temperature
The Neodymium Cylinder Magnet – 5mm x 5mm | N42UH High Temperature is a premium rare earth permanent magnet engineered for compact, high-performance applications where both exceptional magnetic strength and outstanding thermal stability are required. Manufactured from N42UH grade neodymium (NdFeB), this precision cylinder magnet is specifically designed to maintain reliable magnetic performance in elevated-temperature environments that exceed the capabilities of standard neodymium magnets.
With a 5mm diameter and 5mm length, this magnet features a compact, symmetrical cylindrical profile that is ideal for precision assemblies, electronic devices, sensors, actuators, robotics, medical equipment, automotive components, and industrial automation systems. Its equal diameter and length make it easy to integrate into confined spaces while delivering powerful magnetic performance for its size.
This cylinder magnet is axially magnetised through its 5mm length, meaning the north and south poles are located on the two circular end faces. This pole orientation produces a concentrated magnetic field that is well suited to magnetic holding, locating, sensing, coupling, and positioning applications where accuracy and repeatability are essential.
Finished with a durable nickel-copper-nickel (Ni-Cu-Ni) triple-layer coating, the magnet offers excellent resistance to corrosion and everyday wear while maintaining a smooth, polished appearance. Whether you're designing high-temperature equipment, manufacturing precision components, or developing prototypes, the 5mm x 5mm N42UH High Temperature Neodymium Cylinder Magnet delivers dependable long-term performance.
Key Features
- Premium N42UH grade neodymium rare earth magnet
- High-temperature permanent magnet
- 5mm diameter x 5mm length
- Compact cylindrical design
- Axially magnetised through the length
- Excellent magnetic strength for its size
- Superior temperature resistance compared with standard neodymium grades
- Durable nickel-copper-nickel plated finish
- Precision manufactured for dimensional consistency
- Suitable for industrial, commercial, and precision engineering applications
Common Applications
- High-temperature sensors
- Industrial automation equipment
- Robotics
- Electric motors
- Precision actuators
- Electronic devices
- Medical equipment
- Automotive systems
- Scientific instruments
- Prototype development
Ideal For
- Engineers
- OEM manufacturers
- Electronics designers
- Robotics developers
- Automotive engineers
- Research laboratories
- Medical device manufacturers
- Product development teams
- Maintenance technicians
- Precision engineering workshops
Why Choose an N42UH High Temperature Cylinder Magnet?
The N42UH grade is specifically developed for applications where magnets are exposed to significantly higher operating temperatures than conventional neodymium magnets can withstand. It combines excellent magnetic strength with enhanced thermal stability, helping to minimise permanent magnetic loss in demanding industrial and engineering environments.
The 5mm x 5mm cylindrical geometry provides a balanced design that is easy to install into holes, housings, shafts, and precision components. Its equal diameter and length create a compact magnetic field that performs exceptionally well in sensing, positioning, coupling, and magnetic retention applications.
The durable nickel plating provides added protection against corrosion and mechanical wear, making this magnet an excellent choice for long-term use in automation systems, electronic assemblies, machinery, and OEM products requiring reliable magnetic performance under elevated temperatures.
Technical Specifications
- Product Type: Neodymium Cylinder Magnet
- Material: Neodymium Iron Boron (NdFeB)
- Grade: N42UH (High Temperature)
- Shape: Cylinder
- Diameter: 5mm
- Length: 5mm
- Magnetisation: Axially magnetised through the 5mm length
- Pole Orientation: North and south poles on the circular end faces
- Coating: Nickel-Copper-Nickel (Ni-Cu-Ni)
- Temperature Classification: Ultra High Temperature neodymium grade
- Finish: Polished silver nickel finish
- Application: Holding, positioning, sensing, automation, motors, electronics, and precision engineering
Please Note
Although N42UH magnets are designed for significantly higher operating temperatures than standard neodymium magnets, they should still be operated within their recommended temperature limits to maintain optimum magnetic performance and service life.
Neodymium magnets are extremely powerful for their size and should be handled carefully. They can snap together unexpectedly, creating pinch hazards or causing the magnets to chip or crack upon impact.
Actual holding force will vary depending on the thickness, finish, and condition of the mating steel surface, air gap, alignment, operating temperature, and overall application design.
Neodymium magnets are hard but brittle and must not be drilled, cut, machined, or welded after manufacture. Keep away from children, pacemakers, medical implants, magnetic storage media, and sensitive electronic equipment.
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.
