Neodymium Disc Magnet – 75mm x 15mm

The Neodymium Disc Magnet – 75mm x 15mm is a large rare earth permanent magnet measuring 75mm in diameter x 15mm thick. Manufactured from Neodymium Iron Boron (NdFeB), this substantial round magnet is designed for applications requiring high-performance permanent magnetic material in a broad disc format, including industrial equipment, engineering, manufacturing, magnetic assemblies, research, fixtures and OEM applications.

Also known as a large rare earth disc magnet, NdFeB disc magnet, round neodymium magnet or large neodymium magnet, its 75mm diameter provides a significant circular surface area for integration into suitably engineered magnetic systems.

As a permanent magnet, this 75mm x 15mm neodymium disc requires no electricity, batteries or charging to maintain its magnetic field. Due to its substantial dimensions and the high magnetic performance associated with NdFeB material, appropriate handling procedures are particularly important.

Key Features

• 75mm diameter x 15mm thickness
• Neodymium Iron Boron (NdFeB)
• Large rare earth permanent magnet
• Broad circular disc geometry
• High-performance permanent magnetic material
• Suitable for industrial and engineering applications
• Useful for magnetic holding and positioning
• Suitable for fixtures and custom magnetic assemblies
• Can be incorporated into engineered equipment and products
• Permanent magnetic operation
• No electricity or batteries required
• Suitable for manufacturing, research and OEM applications

Common Applications

• Industrial equipment
• Engineering assemblies
• Magnetic holding and positioning
• Manufacturing
• Machinery
• Magnetic fixtures and jigs
• Research and development
• Laboratory equipment
• Prototype systems
• Product development
• Custom magnetic assemblies
• OEM products

Large 75mm x 15mm Neodymium Disc Magnet

This neodymium magnet measures 75mm in diameter x 15mm thick, providing a broad circular magnetic component for industrial, engineering and manufacturing applications.

Its geometry can make it useful for integration into:

• Machinery
• Large product housings
• Magnetic fixtures
• Mechanical assemblies
• Positioning systems
• Prototype equipment
• Research systems
• Custom manufactured components

The 75mm x 15mm dimensions describe the physical size of the magnet and should not be interpreted as a pull-force or safe load-capacity rating.

Neodymium Iron Boron Rare Earth Magnet

Neodymium Iron Boron (NdFeB) is one of the strongest commercially available permanent magnetic materials.

Its high magnetic performance relative to magnet volume has made neodymium widely used in:

• Industrial machinery
• Engineering systems
• Magnetic fixtures
• Sensors
• Product manufacturing
• Research equipment
• Magnetic mechanisms
• OEM components

The specific NdFeB magnetic grade of this 75mm x 15mm magnet has not been supplied and should not be assumed.

Large Disc Magnet for Industrial Applications

The substantial dimensions of this disc magnet make it particularly relevant to industrial and engineered magnetic applications.

Potential uses include:

• Magnetic holding systems
• Positioning equipment
• Fixtures and jigs
• Machinery components
• Product development
• Research equipment
• Custom magnetic systems

Large neodymium magnets should be incorporated into appropriately designed assemblies that account for both their magnetic attraction and the mechanical forces that can occur during installation and use.

Magnetisation Direction

The magnetisation direction of this 75mm x 15mm disc magnet has not been supplied.

Disc magnets can be manufactured with different magnetic pole orientations. Magnetisation direction determines the location of the north and south poles and can significantly affect performance within a magnetic circuit.

For applications involving magnetic coupling, sensors, interaction with other magnets or a required field orientation, magnetisation direction should be confirmed before installation.

Magnetic Holding Performance

Actual magnetic performance depends on multiple factors, including:

• NdFeB magnetic grade
• Magnetisation direction
• Target steel thickness
• Target steel composition
• Available contact area
• Surface flatness
• Air gaps
• Paint and coatings
• Magnet orientation
• Load direction
• Magnetic circuit design

No specific pull force or Gauss rating has been supplied for this product. These values should not be inferred solely from the magnet's 75mm diameter, 15mm thickness or neodymium construction.

Pull Force vs Safe Working Load

A magnet's measured pull force, where provided, should not automatically be interpreted as a safe working load or lifting capacity.

Laboratory pull-force measurements are typically obtained under controlled conditions and practical performance can vary substantially.

Factors such as:

• Steel thickness
• Surface condition
• Contact area
• Air gaps
• Load direction
• Movement
• Vibration
• Leverage
• Temperature

can all affect real-world magnetic holding performance.

This magnet should not be used as certified lifting equipment unless incorporated into an appropriately engineered and rated system.

Direct Pull vs Shear Force

Magnetic holding performance varies significantly according to load direction.

Direct pull occurs when force attempts to separate the magnet perpendicular to the steel target.

Shear force occurs when a load acts parallel to the target surface and encourages the magnet to slide.

Vertical, angled or dynamic holding performance can therefore be substantially lower than ideal direct-pull performance.

Magnetic Attraction Decreases with Distance

Neodymium magnets generally provide their strongest attraction when positioned close to compatible ferromagnetic material.

Magnetic attraction decreases rapidly as the distance between the magnet and target increases.

Air gaps can be introduced by:

• Paint
• Adhesive
• Plastic
• Protective coatings
• Fabric
• Dirt
• Rust
• Surface irregularities

For strongest practical attraction, minimise unnecessary gaps between the magnet and a clean, flat, sufficiently thick ferromagnetic target.

Compatible Target Materials

Neodymium magnets attract ferromagnetic iron and compatible steels.

Suitable target materials may include:

• Mild steel
• Iron
• Magnetic steel
• Ferromagnetic machinery components
• Compatible steel plates and fixtures

They will not effectively attract:

• Aluminium
• Copper
• Brass
• Plastic
• Timber
• Glass

Many stainless steel grades may also provide weak or negligible magnetic attraction and should be tested before use.

Neodymium vs Ferrite Disc Magnets

Both neodymium and ferrite are permanent magnetic materials, but they offer different characteristics.

Neodymium magnets generally provide:

• Much higher magnetic strength relative to size
• High-performance magnetic properties
• Suitability for demanding engineered applications
• Strong magnetic fields from relatively compact magnet volumes

Ferrite magnets are generally:

• More economical
• Naturally corrosion resistant
• Lower in magnetic strength relative to size
• Suitable for many general-purpose applications

The appropriate material depends on the required magnetic performance, available space, operating environment and application design.

Permanent Magnetic Operation

This NdFeB disc is a permanent magnet and requires no external electrical supply to maintain its magnetic field.

It requires:

• No electricity
• No batteries
• No charging
• No electrical wiring

Its magnetic field remains continuously active, including during transport, storage and handling.

Technical Specifications

• Product Type: Neodymium Disc Magnet
• Alternative Names: Large Neodymium Magnet, Rare Earth Disc Magnet, NdFeB Disc Magnet, Round Neodymium Magnet
• Diameter: 75mm
• Thickness: 15mm
• Shape: Disc / Round
• Magnetic Material: Neodymium Iron Boron (NdFeB)
• Magnet Type: Rare Earth Permanent Magnet
• Magnetic Operation: Permanent
• Power Required: None
• Target Materials: Compatible ferromagnetic iron and steel
• Primary Functions: Magnetic holding, positioning and integration into engineered magnetic systems
• Typical Applications: Industrial equipment, engineering, manufacturing, fixtures, research and OEM products

Industrial, Engineering and OEM Applications

The 75mm diameter x 15mm thickness makes this neodymium disc magnet suitable for substantial magnetic assemblies where a broad circular permanent magnet is required.

Potential users include:

• Engineers
• Equipment manufacturers
• Machinery builders
• Product designers
• Industrial manufacturers
• Research laboratories
• Prototype developers
• OEM manufacturers

For technical applications, magnetic performance and mechanical safety should be evaluated as part of the complete assembly.

Safe Handling of Large Neodymium Magnets

Large neodymium magnets require careful handling because rapid attraction between the magnet and steel or another magnet can generate significant impact and pinch forces.

When handling:

• Keep fingers and other body parts away from closing gaps
• Do not allow magnets to snap together uncontrolled
• Do not allow the magnet to accelerate uncontrolled towards steel
• Separate large magnets using an appropriate controlled method
• Wear suitable protective equipment for the application
• Keep the work area clear of loose ferromagnetic tools and components
• Store magnets securely with appropriate separation

The magnetic field is permanent and cannot simply be switched off.

Brittle Magnetic Material

Despite its magnetic strength, Neodymium Iron Boron is mechanically hard and brittle.

The magnet may chip, crack or fracture if it:

• Collides forcefully with another magnet
• Strikes a steel surface
• Is dropped
• Is subjected to excessive mechanical stress
• Experiences uncontrolled impact

Fragments created by a magnet breaking can be sharp.

Do not drill, cut or machine neodymium magnets using conventional methods.

Please Note

This product is a Neodymium Disc Magnet measuring 75mm in diameter x 15mm thick.

No specific NdFeB magnetic grade, coating or plating, pull force, Gauss rating, magnetisation direction, dimensional tolerance or maximum operating temperature has been supplied and these specifications should not be assumed.

Actual magnetic performance depends on magnetic grade, magnetisation direction, target steel thickness and composition, available contact area, air gaps, surface condition, magnet orientation, load direction and complete magnetic circuit.

Due to its substantial dimensions, this neodymium magnet should be handled with particular care to prevent pinch, impact and collision hazards. It is not certified lifting equipment unless specifically incorporated into an appropriately engineered and rated lifting system.

Keep powerful magnets away from children, pacemakers and other medical implants, magnetic storage media and sensitive electronic equipment.