Neodymium Block Magnet – 50mm x 25mm x 12.7mm

The Neodymium Block Magnet – 50mm x 25mm x 12.7mm is a powerful rectangular rare earth permanent magnet measuring 50mm long x 25mm wide x 12.7mm thick. Manufactured from Neodymium Iron Boron (NdFeB), this substantial block magnet provides high magnetic performance relative to its physical size and is suitable for engineering, manufacturing, machinery, fixtures and jigs, positioning systems, product assemblies, magnetic closures, research, prototypes and custom OEM applications.

Its 50mm x 25mm rectangular face provides a practical format for integration into appropriately designed housings, recesses and mechanical assemblies. The 12.7mm thickness gives the magnet a substantial block-style profile for applications where a larger rare earth magnetic component is required.

Also known as a rare earth block magnet, NdFeB block magnet, rectangular neodymium magnet, neodymium bar magnet or rare earth rectangular magnet, this product provides permanent magnetic operation without electricity, batteries or charging.

Key Features

• Length: 50mm
• Width: 25mm
• Thickness: 12.7mm
• Shape: Rectangular / Block
• Magnetic material: Neodymium Iron Boron (NdFeB)
• Rare earth permanent magnet
• Broad 50mm x 25mm rectangular face
• Substantial 12.7mm thickness
• High magnetic performance relative to size
• Suitable for engineering and manufacturing
• Useful for fixtures, jigs and positioning systems
• Suitable for machinery and industrial equipment
• Useful for product assemblies and magnetic closures
• Suitable for research, prototypes and OEM products
• Permanent magnetic operation
• No electricity, batteries or charging required

Common Applications

• Engineering
• Manufacturing
• Industrial equipment
• Machinery
• Fixtures and jigs
• Magnetic positioning
• Component alignment
• Product assemblies
• Magnetic closures
• Removable components
• Equipment housings
• Displays
• Furniture
• Research and development
• Laboratory equipment
• Prototypes
• Custom OEM products

50mm x 25mm x 12.7mm Rectangular Magnet

This neodymium block magnet measures 50mm long x 25mm wide x 12.7mm thick, creating a substantial rectangular magnetic component.

Its geometry can make it suitable for appropriately designed:

• Rectangular recesses
• Equipment housings
• Magnetic fixtures
• Positioning systems
• Product assemblies
• Machinery
• Removable panels
• Custom magnetic mounts

The magnet should be installed with suitable dimensional clearance. Neodymium magnetic material is hard and brittle and should not be force-fitted into an undersized housing.

Neodymium Iron Boron Rare Earth Magnet

This block magnet is manufactured from Neodymium Iron Boron (NdFeB), a high-performance family of rare earth permanent magnetic materials.

Neodymium magnets are widely used where substantial magnetic performance is required within relatively compact dimensions.

Potential functions include:

• Magnetic attraction
• Holding
• Positioning
• Alignment
• Magnetic closure
• Product integration
• Fixture construction
• Engineered magnetic systems

The specific neodymium magnetic grade has not been supplied for this product and should not be assumed.

Rectangular Magnetic Profile

The 50mm x 25mm face has a 2:1 length-to-width ratio, providing a rectangular contact area that may suit elongated housings, fixtures and product assemblies.

The 12.7mm thickness creates a substantial block profile rather than a thin magnetic plate.

This geometry can be useful where the design requires:

• An elongated magnetic component
• A rectangular magnetic face
• Integration into a mechanical assembly
• Magnetic attraction across a relatively broad area
• Repeatable positioning
• Compact rare earth magnetic performance

Physical size and contact area alone do not determine magnetic holding force. Magnetic grade, magnetisation direction and magnetic circuit design are also important.

Industrial and Engineering Applications

Neodymium block magnets are widely incorporated into custom engineering and manufactured products.

Potential applications include:

• Manufacturing equipment
• Assembly systems
• Inspection fixtures
• Positioning equipment
• Machinery
• Removable components
• Custom magnetic devices
• Prototype equipment

Where unexpected magnetic release could create a safety risk, use an appropriate mechanical or secondary retention system.

Fixtures, Jigs and Positioning

The rectangular profile of this magnet can be useful within appropriately designed fixtures and jigs.

Potential functions include:

• Component positioning
• Temporary holding
• Alignment
• Removable fixture components
• Assembly aids
• Inspection setups
• Prototype tooling

The magnet itself should not be treated as a structural component. Mechanical loads should be carried by appropriately designed structural parts where necessary.

Magnetic Closures

This 50mm x 25mm x 12.7mm neodymium block magnet may also be incorporated into appropriately designed magnetic closure systems.

Potential applications include:

• Cabinets
• Access panels
• Furniture
• Equipment covers
• Displays
• Boxes
• Custom enclosures

The magnet may attract a compatible ferromagnetic mating plate or interact with another appropriately oriented permanent magnet.

Where two magnets are used together, confirm polarity and magnetic orientation before permanent installation.

Magnetisation Direction

Block magnets can be manufactured with different magnetisation configurations.

Depending on manufacture, this rectangular magnet could be magnetised:

• Through its 12.7mm thickness
• Across its 25mm width
• Along its 50mm length
• In another application-specific configuration

The magnetisation direction and pole orientation have not been supplied and should not be assumed from the magnet's shape.

Confirm the magnetic configuration for applications involving:

• Magnet-to-magnet attraction
• Sensors
• Magnetic switching
• Magnetic circuits
• Positioning systems
• Engineered assemblies

Magnetic Performance

Practical magnetic performance depends on factors including:

• Neodymium grade
• Magnetisation direction
• Magnet geometry
• Magnetic circuit design
• Target steel composition
• Target steel thickness
• Available contact area
• Surface flatness
• Air gaps
• Paint and coatings
• Load direction
• Mechanical leverage

No specific pull force or magnetic flux density in Gauss has been supplied and these values should not be inferred from the 50mm x 25mm x 12.7mm dimensions alone.

Pull Force vs Safe Working Load

A magnet's pull force, where specified, is generally measured under controlled test conditions and should not automatically be interpreted as a real-world lifting or suspension capacity.

Practical holding can be reduced by:

• Thin target steel
• Paint
• Powder coating
• Rust
• Dirt
• Uneven surfaces
• Air gaps
• Side loading
• Vibration
• Mechanical leverage

No pull-force specification has been supplied for this product.

The physical dimensions and neodymium construction do not establish a safe working load.

Direct Pull vs Shear Force

Magnetic holding performance varies according to the direction of the applied load.

Direct pull occurs when the magnet is separated perpendicular to a compatible steel surface.

Shear loading occurs when the applied load encourages the magnet to slide parallel to the surface.

Practical shear holding can be significantly lower than direct-pull performance and depends on:

• Surface friction
• Installation orientation
• Contact area
• Surface coatings
• Mechanical leverage
• Vibration

Test the complete magnetic assembly under realistic operating conditions where holding performance is important.

Target Steel Thickness

The thickness and composition of the target steel can significantly influence magnetic performance.

Important factors include:

• Steel thickness
• Steel composition
• Target dimensions
• Surface flatness
• Magnetic saturation
• Surface coatings

A large neodymium magnet attached to thin steel may not achieve the same practical magnetic performance as it would against a suitable thicker steel target.

Where holding performance is critical, test the magnet against the actual material intended for the application.

Air Gaps and Surface Contact

Neodymium magnets generally provide their strongest practical attraction when positioned close to clean, flat ferromagnetic steel.

Magnetic performance can be reduced by gaps created by:

• Paint
• Powder coating
• Adhesive
• Plastic
• Protective films
• Dirt
• Rust
• Uneven surfaces
• Mechanical clearance

Even relatively small gaps can noticeably affect magnetic performance.

Minimise unnecessary separation between the magnetic face and target steel wherever the application permits.

Bonding a Neodymium Block Magnet

This neodymium block magnet may be bonded into an appropriately designed product, housing or recess.

Before bonding:

• Confirm polarity and required magnetic orientation
• Clean all bonding surfaces
• Remove oil, grease and contamination
• Select an adhesive compatible with the magnet's actual surface finish
• Provide appropriate dimensional clearance
• Avoid force-fitting
• Allow the adhesive to cure according to its instructions

The specific coating or plating has not been supplied, so adhesive compatibility with the actual magnet finish should be confirmed before permanent installation.

Avoid Force-Fitting and Machining

Neodymium magnetic material is hard and brittle despite its substantial magnetic strength.

It may chip, crack or fracture when subjected to inappropriate mechanical stress.

Avoid:

• Force-fitting
• Bending
• Prying
• Drilling
• Cutting
• Grinding
• Machining
• Crushing
• Uncontrolled collisions

The surrounding assembly should be designed so that structural loads are carried by suitable mechanical components rather than by the magnet itself.

Compatible Target Materials

Neodymium magnets attract suitable ferromagnetic materials, including:

• Mild steel
• Iron
• Magnetic steel
• Compatible ferromagnetic components

They will not effectively attract inherently non-magnetic materials such as:

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

Many stainless steel grades may also be weakly magnetic or non-magnetic and should be tested before relying on magnetic attraction.

Neodymium vs Ferrite Block Magnets

Neodymium and ferrite block magnets provide different characteristics.

Neodymium block magnets generally provide:

• Higher magnetic performance relative to size
• Strong magnetic properties from compact dimensions
• Advantages where installation space is restricted
• Suitability for demanding engineering applications

Ferrite block magnets are generally:

• More economical
• Naturally corrosion resistant
• Resistant to demagnetisation
• Suitable for many general-purpose applications
• Often physically larger where comparable magnetic performance is required

Neodymium can therefore be particularly useful where high magnetic performance within a compact mechanical or product assembly is a key design requirement.

Permanent Magnetic Operation

This neodymium block magnet is a permanent magnet.

It requires:

• No electricity
• No batteries
• No charging
• No external power supply

Its magnetic field remains continuously active during normal use.

Technical Specifications

• Product Type: Neodymium Block Magnet
• Alternative Names: Rare Earth Block Magnet, NdFeB Block Magnet, Rectangular Neodymium Magnet, Neodymium Bar Magnet, Rare Earth Rectangular Magnet
• Length: 50mm
• Width: 25mm
• Thickness: 12.7mm
• Shape: Rectangular / Block
• 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 attraction, holding, positioning, alignment, closure and product integration
• Typical Applications: Engineering, manufacturing, machinery, fixtures, jigs, product assemblies, closures, research, prototypes and OEM products

Safety and Handling

A neodymium block magnet of this size should be handled carefully. Powerful rare earth magnets can accelerate rapidly towards steel objects or other magnets, creating significant pinch and crushing hazards.

Always:

• Keep fingers away from magnetic contact points
• Maintain control of the magnet during installation
• Separate magnets carefully
• Keep magnets suitably separated during storage
• Use appropriate eye protection where collision or fragmentation is possible

Neodymium magnets are brittle and can chip, crack or shatter during uncontrolled collisions.

Do not drill, cut, grind, machine or crush neodymium magnets.

Keep powerful permanent magnets an appropriate distance from:

• Pacemakers
• Implanted medical devices
• Magnetic storage media
• Magnetic cards
• Sensitive electronic equipment

Keep neodymium magnets securely away from babies and children.

Please Note

This product is a Neodymium Block Magnet measuring 50mm long x 25mm wide x 12.7mm thick, manufactured from Neodymium Iron Boron (NdFeB) rare earth magnetic material.

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

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

The stated 50mm x 25mm x 12.7mm dimensions describe the physical size of the magnet and do not represent its pull force, holding capacity or safe working load.

This magnet is not certified lifting equipment and should not be used for overhead or safety-critical lifting.