Neo Cyl D2x4mm N50H | High Temp 120deg
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Neodymium Cylinder Magnet – 2mm x 4mm | N50H | High Temperature 120°C
The Neodymium Cylinder Magnet 2mm x 4mm | N50H | High Temperature 120°C is a compact, high-performance rare earth permanent magnet designed for applications requiring exceptional magnetic strength in a miniature form factor. Manufactured from premium N50H-grade Neodymium Iron Boron (NdFeB), this precision cylinder magnet measures 2mm in diameter and 4mm in length, making it ideal for compact assemblies, electronics, sensors, medical devices, and precision engineering.
Despite its small size, the N50H magnetic grade delivers extremely high magnetic energy, providing greater holding force than many lower-grade neodymium magnets of the same dimensions. The H (High Temperature) designation allows the magnet to operate continuously at temperatures of up to 120°C, making it suitable for applications where elevated temperatures would reduce the performance of standard neodymium magnets.
This magnet is axially magnetised, meaning the north and south poles are located on the two flat ends of the cylinder. This orientation provides maximum holding force and is ideal for insertion into holes, precision alignment systems, magnetic couplings, and compact assemblies.
The magnet is finished with a durable nickel-copper-nickel (Ni-Cu-Ni) coating, providing excellent resistance to corrosion, oxidation, and everyday wear while maintaining a bright, polished appearance.
Key Features
- Premium N50H-grade neodymium rare earth magnet
- High magnetic strength in a miniature size
- Dimensions: 2mm diameter x 4mm length
- High-temperature operation up to 120°C
- Axially magnetised for maximum end-face magnetic strength
- Durable nickel-copper-nickel (Ni-Cu-Ni) coating
- Excellent corrosion and oxidation resistance
- Precision manufactured for consistent performance
- Long-lasting permanent magnet
Common Applications
- Miniature sensors and reed switches
- Medical and laboratory equipment
- Electronics manufacturing
- Robotics and automation systems
- Precision engineering
- Magnetic couplings
- Instrumentation
- OEM product manufacturing
- Scientific research equipment
- Model making and prototyping
Ideal For
- Electronics engineers
- Mechanical engineers
- Product designers
- Medical device manufacturers
- OEM manufacturers
- Research laboratories
- Automation specialists
- Precision manufacturing professionals
Why Choose an N50H High Temperature Neodymium Cylinder Magnet?
The 2mm x 4mm N50H High Temperature Neodymium Cylinder Magnet is designed for applications where maximum magnetic performance, compact size, and heat resistance are essential. The N50H grade provides outstanding magnetic strength while maintaining reliable performance at temperatures of up to 120°C, making it ideal for equipment operating in warm or enclosed environments.
Its slim cylindrical profile allows it to be easily installed into drilled holes, moulded components, or precision mechanical assemblies, making it a popular choice for sensors, actuators, magnetic positioning systems, and compact engineering solutions.
Technical Specifications
- Material: Neodymium Iron Boron (NdFeB)
- Magnet Grade: N50H
- Shape: Cylinder
- Diameter: 2mm
- Length: 4mm
- Magnetisation: Axial (through the length)
- Maximum Recommended Operating Temperature: 120°C
- Coating: Nickel-Copper-Nickel (Ni-Cu-Ni)
- Magnet Type: Permanent Rare Earth Magnet
Please Note
This is a high-strength rare earth magnet and should be handled with care. Due to its very small size, it presents a serious swallowing hazard if ingested. Keep out of reach of children at all times.
Maximum holding force is measured under ideal conditions using a clean, flat, thick mild steel surface with direct end-face contact. Actual magnetic performance will vary depending on the steel thickness, air gap, surface finish, mounting arrangement, and operating environment.
Although this N50H magnet is designed for continuous operation at temperatures of up to 120°C, prolonged exposure to higher temperatures may cause permanent loss of magnetic strength. Keep away from pacemakers, implanted medical devices, sensitive electronic equipment, and magnetic storage media. Do not drill, machine, or strike the magnet, as neodymium is hard but brittle and may crack or shatter under excessive mechanical stress.
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.
