Neodymium Disc Magnet – 6mm x 4mm | N45

Description

The Neodymium Disc Magnet – 6mm x 4mm | N45 is a compact, high-strength rare earth magnet designed for applications requiring reliable magnetic attraction within a small space. Manufactured from N45 grade Neodymium Iron Boron (NdFeB), this powerful permanent magnet offers excellent magnetic performance relative to its size.

Measuring 6mm in diameter and 4mm thick, this small neodymium disc magnet features a compact cylindrical profile suitable for magnetic fastening, precision engineering, model making, craft projects, product assembly and custom magnetic applications.

The N45 magnetic grade provides high magnetic energy density, allowing this miniature magnet to generate useful magnetic attraction despite its small dimensions. Its relatively substantial 4mm thickness makes it a practical choice for projects requiring more magnetic material than an ultra-thin disc magnet of the same diameter.

Neodymium magnets are among the strongest commercially available permanent magnets. Their ability to deliver powerful magnetic performance from compact dimensions makes them popular in engineering, manufacturing, electronics, craft projects and industrial applications.

This 6mm x 4mm rare earth disc magnet can be incorporated into custom assemblies, recessed into suitable materials or paired with another correctly oriented magnet to create a compact magnetic connection.

Its small size makes it particularly useful for miniature closures, lightweight magnetic fixtures, precision positioning systems and DIY projects where larger magnets may be unsuitable.

Also known as a 6mm neodymium magnet, N45 rare earth disc magnet, 6mm x 4mm round magnet, small cylindrical magnet, miniature NdFeB magnet or high-strength permanent magnet, this product provides a versatile solution for applications requiring compact magnetic performance.

Important: The N45 designation refers to the magnetic material grade, not a 45kg pull force. Actual holding performance depends on the magnet's dimensions, magnetisation direction, contact area and operating conditions.

Key Features

• Diameter: 6mm

• Thickness: 4mm

• Magnet Grade: N45

• Material: Neodymium Iron Boron (NdFeB)

• Shape: Round Disc / Short Cylinder

• Magnet Type: Permanent Rare Earth Magnet

• High-performance N45 magnetic material

• Compact 6mm diameter

• Substantial 4mm thickness

• Strong magnetic attraction relative to size

• Suitable for precision magnetic assemblies

• Useful for miniature magnetic closures

• Ideal for craft and model-making applications

• Suitable for DIY projects and prototyping

• Can be paired with compatible magnets or ferromagnetic steel

• Permanent magnetic field without electrical power

Common Applications

This 6mm x 4mm N45 neodymium disc magnet may be suitable for:

• Miniature magnetic closures

• Cabinet and box fastening

• Craft projects

• Model making

• DIY magnetic assemblies

• Magnetic positioning systems

• Precision engineering

• Product prototyping

• Lightweight magnetic fixtures

• Decorative magnetic attachments

• Custom packaging

• Magnetic displays

• Scientific experiments

• Educational demonstrations

• Small mechanical assemblies

• Custom product manufacturing

• Magnetic fastening systems

Application suitability depends on the required magnetic holding force, mounting arrangement, materials and operating conditions.

Compact 6mm x 4mm Design

This neodymium disc magnet measures:

• Diameter: 6mm

• Thickness: 4mm

Its short cylindrical shape provides a relatively substantial volume of magnetic material within a compact footprint.

Compared with thinner disc magnets of the same diameter and grade, the additional thickness can provide greater magnetic performance in suitable magnetic circuits.

This makes the magnet useful for:

• Recessed magnetic fittings

• Miniature closures

• Precision assemblies

• Custom magnetic mechanisms

• Model-making projects

• Compact fastening applications

The small diameter also allows the magnet to be incorporated into narrow spaces where larger magnets may not fit.

High-Performance N45 Neodymium Grade

This magnet is manufactured from N45 grade Neodymium Iron Boron (NdFeB).

N45 is a high-performance neodymium grade recognised for its strong magnetic energy density.

When comparing magnets of identical dimensions, geometry and magnetisation, N45 material generally offers greater magnetic energy potential than lower grades such as N35, N38 and N42.

Benefits of N45 Magnetic Material

Strong Magnetic Performance

N45 neodymium material provides high magnetic strength relative to size.

Compact Design

Suitable for applications where available installation space is limited.

Permanent Magnetism

Provides a magnetic field without requiring electrical power.

Versatile Applications

Useful for engineering, craft projects, magnetic closures and custom assemblies.

Precision Manufacturing Applications

Can be incorporated into small components and specialised magnetic mechanisms.

The N45 grade does not indicate a 45kg pull-force rating.

Miniature Magnetic Closures

This N45 neodymium disc magnet may be suitable for creating discreet magnetic closures in compact applications.

Potential uses include:

• Small decorative boxes

• Miniature cases

• Craft packaging

• Lightweight display components

• Custom accessories

• Model-making projects

• Small cabinet fittings

A magnetic closure may use:

• One magnet and a suitable ferromagnetic steel component

• Two magnets with correctly aligned opposite poles

For best results, ensure the magnetic components are positioned correctly and that the contact surfaces are clean.

Precision Engineering and Product Assembly

The compact 6mm diameter and 4mm thickness make this magnet useful for precision engineering and custom product development.

Potential applications include:

• Magnetic positioning mechanisms

• Small magnetic fixtures

• Custom equipment

• Engineering prototypes

• Scientific instruments

• Miniature mechanical assemblies

• Product manufacturing

Its small size allows it to be incorporated into applications where larger magnets may not be practical.

Craft, DIY and Model-Making Applications

Small neodymium disc magnets are widely used in creative projects because of their compact dimensions and useful magnetic attraction.

Potential applications include:

• Handmade crafts

• Magnetic closures

• Scale models

• Decorative attachments

• Custom packaging

• Magnetic artwork

• DIY magnetic accessories

• Miniature displays

For adhesive mounting, select an adhesive suitable for the magnet's coating and the intended substrate.

Magnetic Field and Magnetisation Direction

The magnetic field generated by a neodymium disc magnet depends on its magnetic grade, dimensions and magnetisation direction.

Disc magnets are commonly magnetised axially, with North and South poles on opposite flat circular faces.

However, the magnetisation direction of this specific product has not been confirmed.

For applications requiring a particular pole orientation, confirm the magnetisation direction before installation.

Magnetic Holding Performance

The holding strength of this N45 disc magnet depends on several factors, including:

• Magnet dimensions

• N45 magnetic grade

• Magnetisation direction

• Contact surface area

• Target steel thickness

• Surface condition

• Air gaps

• Load orientation

• Operating temperature

• Magnetic circuit configuration

The exact pull-force rating and surface Gauss have not been supplied.

For applications requiring a defined holding force, obtain verified performance data or conduct appropriate testing.

Installation and Handling

Due to its compact dimensions and strong magnetic material, this magnet should be handled carefully.

General Installation Recommendations

1. Confirm the required magnetic performance.

2. Verify the magnet's dimensions and pole orientation.

3. Select a suitable mounting method.

4. Avoid excessive mechanical pressure.

5. Prevent uncontrolled collisions with other magnets.

6. Protect the magnet's surface coating.

7. Use suitable adhesives where required.

8. Test the completed assembly before regular use.

Important: Do not drill, cut, grind or machine finished neodymium magnets.

Suitable Magnetic Surfaces

This neodymium magnet attracts suitable ferromagnetic materials, including:

• Mild steel

• Iron

• Certain magnetic steel alloys

• Compatible ferromagnetic components

It does not magnetically attach to:

• Aluminium

• Copper

• Brass

• Timber

• Plastic

• Glass

• Non-magnetic stainless steel

Some stainless steel grades are magnetic, while others are not.

The magnet may also attract or repel other permanent magnets depending on their pole orientation.

Technical Specifications

Compliance & Safety

Strong Magnetic Field: Neodymium magnets can attract ferromagnetic objects and other magnets suddenly.

Brittle Material: Neodymium magnets are brittle and may chip, crack or shatter if dropped or subjected to impact.

Pinch Hazard: Keep fingers and skin clear when bringing magnets together or placing them against steel surfaces.

Swallowing Hazard: This small magnet presents a serious ingestion hazard. Swallowed magnets can cause life-threatening internal injuries and require urgent medical attention.

Children: Keep away from children. Do not use in toys or products accessible to young children without appropriate safety assessment.

Medical Devices: Magnets may interfere with pacemakers, implanted medical devices and magnetically sensitive equipment. Follow the relevant manufacturer's safety guidance.

Electronic Equipment: Keep magnets away from equipment and media that may be affected by magnetic fields.

Machining: Do not drill, cut or grind finished neodymium magnets.

Temperature: Excessive heat can permanently reduce magnetic performance. Confirm the operating temperature rating before use in elevated-temperature environments.

Coating: Avoid scratching or damaging the surface coating, as exposed neodymium material may be susceptible to corrosion.

Load-Bearing Applications: Do not use this magnet for overhead lifting or safety-critical holding applications.

Frequently Asked Questions

What are the dimensions of this neodymium disc magnet?

The magnet measures 6mm in diameter and 4mm thick.

What does N45 mean?

N45 is the grade of the neodymium magnetic material. It indicates a high-performance magnetic classification and does not mean the magnet has a 45kg pull force.

Is this a strong magnet?

Yes. N45 neodymium magnets provide high magnetic strength relative to their size. Actual holding performance depends on the magnetisation direction and application conditions.

What is the difference between N45 and N52 magnets?

N52 has a higher maximum energy product than N45 when comparing magnets of identical dimensions and magnetisation. However, actual magnetic performance depends on the complete magnet design and application.

Can this magnet be used for craft projects?

Yes. Its compact dimensions make it suitable for craft projects, model making and decorative applications.

Can I use this magnet for miniature closures?

Yes. It may be suitable for lightweight magnetic closures in small boxes, packaging and miniature assemblies.

What is the pull force of this magnet?

A specific pull-force rating has not been supplied. Holding performance depends on the magnetisation direction, contact area and installation conditions.

Is this magnet magnetised through its thickness?

Axial magnetisation is common for neodymium disc magnets, but the magnetisation direction of this specific product has not been confirmed.

Can I glue this magnet into a project?

Yes. A suitable adhesive may be used, provided it is compatible with the magnet's coating and the intended substrate.

Can this magnet break?

Yes. Neodymium magnets are brittle and may chip, crack or shatter if subjected to impact or excessive mechanical stress.

Is this magnet safe for children?

No. Small magnets present a serious swallowing hazard and should be kept away from children.

Is this magnet suitable for outdoor use?

Outdoor suitability depends on the coating and environmental conditions. The exact corrosion-resistance rating has not been supplied.

Related Products

Customers considering this N45 neodymium disc magnet may also be interested in:

• Neodymium Disc Magnets in Other Sizes

• N45 Neodymium Magnets

• N50 Neodymium Disc Magnets

• N52 Neodymium Disc Magnets

• Miniature Rare Earth Magnets

• Self-Adhesive Neodymium Disc Magnets

• Neodymium Block Magnets

• Neodymium Ring Magnets

• Magnetic Craft Supplies

• Magnetic Closure Components

• Precision Magnetic Components

Please Note

This Neodymium Disc Magnet – 6mm x 4mm | N45 is manufactured from N45 grade neodymium iron boron magnetic material.

Its dimensions are 6mm in diameter and 4mm thick.

The exact pull force, surface Gauss, coating composition, magnetisation direction, dimensional tolerances and maximum operating temperature have not been supplied.

N45 refers to the magnetic material grade, not a pull-force rating.

Neodymium magnets are brittle by nature and must be handled carefully to prevent chipping, cracking or shattering.

Warning: This small magnet presents a serious swallowing hazard and must be kept away from children.

For applications requiring a specific holding force or coating performance, confirm the relevant technical specifications and test the magnet in its intended operating conditions.