Neodymium Cylinder Magnet 3mm x 3mm N45 | Pack of 100pcs
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Neodymium Cylinder Magnet – 3mm x 3mm | N45 | Pack of 100pcs
The Neodymium Cylinder Magnet – 3mm x 3mm | N45 | Pack of 100pcs is a convenient bulk pack of 100 miniature rare earth magnets designed for applications requiring strong magnetic performance in an extremely compact cylindrical format. Manufactured from high-quality N45 grade neodymium iron boron (NdFeB), these small magnets provide an impressive strength-to-size ratio for manufacturing, electronics, product development, model making, engineering and DIY projects.
Each magnet measures 3mm in diameter and 3mm in length, creating a compact cylindrical profile that can be incorporated into small drilled holes, housings, components and precision assemblies. Their miniature dimensions make them particularly useful where installation space is limited but reliable magnetic attraction is required.
These cylinder magnets are axially magnetised through their 3mm length, positioning the north and south poles on the two circular end faces. This configuration produces end-to-end magnetic attraction and makes them suitable for magnetic sensing, positioning, closures, miniature mechanisms and custom magnetic assemblies.
Supplied in a pack of 100 pieces, these N45 cylinder magnets are a practical choice for businesses, manufacturers, engineers, designers, schools and makers requiring multiple identical magnets for production runs, prototypes or repetitive projects.
Key Features
- Pack of 100 neodymium cylinder magnets
- High-performance N45 grade rare earth magnets
- Individual magnet dimensions: 3mm diameter x 3mm length
- Compact cylindrical shape
- Strong magnetic performance for their miniature size
- Axially magnetised through the 3mm length
- North and south poles located on the circular end faces
- High magnetic strength-to-size ratio
- Suitable for bulk manufacturing and repetitive applications
- Ideal for precision, commercial, industrial and DIY projects
Common Applications
- Electronics and miniature devices
- Magnetic sensors
- Reed switch activation
- Small magnetic closures
- Model making
- Robotics
- Precision positioning
- Product prototypes
- Manufacturing and assembly
- Custom OEM products
Why Choose N45 Miniature Neodymium Cylinder Magnets?
N45 neodymium magnets offer high magnetic energy in a compact size, making them an excellent choice for applications where space and weight need to be minimised without sacrificing magnetic performance.
At only 3mm x 3mm, these miniature cylinder magnets can be embedded into small products, drilled cavities and precision components where conventional magnets would be too large. Their cylindrical geometry also makes them particularly convenient for insertion into round holes and tubular components.
The 100-piece pack is ideal for larger projects, manufacturing batches and prototype development where multiple identical magnets are required. It also provides a convenient supply for workshops, laboratories, educational facilities and product designers regularly working with miniature magnetic components.
Technical Specifications
- Product Type: Neodymium Cylinder Magnet
- Pack Quantity: 100 pieces
- Material: Neodymium Iron Boron (NdFeB)
- Magnet Grade: N45
- Shape: Cylinder
- Diameter: 3mm
- Length: 3mm
- Magnetisation: Axially magnetised through the 3mm length
- Pole Orientation: North and south poles on the circular end faces
- Magnet Type: Permanent Rare Earth Magnet
- Typical Applications: Holding, sensing, positioning, electronics, manufacturing, models, prototypes and precision assemblies
Ideal for Bulk and Production Applications
This 100-pack of 3mm x 3mm N45 neodymium cylinder magnets is well suited to production environments where small magnetic components need to be installed repeatedly and consistently. Their round profile allows them to fit neatly into appropriately sized drilled or moulded recesses and they can be secured using an adhesive suitable for the magnet coating and surrounding substrate.
For designers and engineers, their miniature dimensions make it possible to introduce magnetic functionality into compact products without significantly increasing the size or weight of the finished assembly.
Please Note
These magnets are extremely small and must be kept away from children. Swallowed magnets can attract to each other through internal tissue and cause severe or life-threatening injuries. Seek urgent medical attention if magnet ingestion is suspected.
Due to their miniature dimensions, care should be taken when separating, handling and installing individual magnets, as they can be easily misplaced.
Actual magnetic holding performance depends on factors including the mating material, steel thickness, surface condition, contact area, air gap and direction of force. Paint, coatings, adhesive layers and other gaps between the magnet and steel surface will reduce magnetic performance.
Neodymium magnets are hard but brittle. Do not drill, cut or machine the magnets, and avoid allowing them to snap together or strike hard surfaces.
Keep away from pacemakers, medical implants, magnetic storage media and sensitive electronic equipment that may be affected by 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.
