Neodymium Cylinder Magnet - 4mm x 6.5mm | N35 | 30° Tapered South End
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This Neodymium Cylinder Magnet (4mm x 6.5mm) is a compact yet powerful rare earth magnet engineered for precision applications where size, performance, and specialised geometry are critical. Manufactured from Grade N35 neodymium (NdFeB) and finished with a durable NiCuNi (Nickel-Copper-Nickel) coating, this magnet offers excellent corrosion resistance along with strong magnetic performance.
What sets this magnet apart is its 30° tapered south end, a unique design that allows for precise magnetic positioning and integration into specialised assemblies. The tapered geometry helps guide magnetic flux and can assist with accurate alignment in engineered components.
Despite its small footprint, this magnet produces a magnetic flux reading of approximately 5960 Gauss, demonstrating the exceptional strength that neodymium rare earth magnets are known for.
Key Features
Diameter: 4mm
Height: 6.5mm
Magnet Grade: N35 Neodymium
Coating: NiCuNi (Nickel-Copper-Nickel)
Magnetisation Direction: Axial
End Design: 30° Tapered South End
Magnetic Flux: 5960 Gauss
Part Number: 21054Sth
Material: Rare Earth Neodymium (NdFeB)
Precision Magnet for Engineered Applications
The tapered south end design makes this magnet ideal for specialised mechanical assemblies, precision devices, and custom magnetic systems. Its shape can assist with accurate positioning within components where controlled magnetic interaction is required.
Typical Applications
Precision magnetic assemblies
Automotive and mechanical components
Sensors and actuators
Gas valve and control systems
Custom OEM manufacturing
Engineering prototypes
Compact Size, Powerful Performance
Neodymium magnets are the strongest type of permanent magnet available, delivering impressive magnetic force relative to their size. This 4mm x 6.5mm neodymium cylinder magnet is ideal for applications where space is limited but reliable magnetic performance is essential.
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.
