Ferrite Block Magnet – 40mm x 25mm x 10mm

The Ferrite Block Magnet – 40mm x 25mm x 10mm is a rectangular ceramic permanent magnet measuring 40mm long x 25mm wide x 10mm thick. Manufactured from ferrite magnetic material, this versatile block magnet provides economical and reliable permanent magnetic performance for industrial, manufacturing, engineering, educational and general-purpose applications.

Ferrite magnets, also known as ceramic magnets, offer good natural corrosion resistance and good resistance to demagnetisation. The practical 40mm x 25mm rectangular footprint and 10mm thickness make this magnet suitable for magnetic holding and positioning, product assemblies, displays, fixtures, jigs, educational projects, prototypes and custom OEM applications.

Also known as a ceramic block magnet, rectangular ferrite magnet, ferrite bar magnet, ceramic permanent magnet or 40mm x 25mm x 10mm magnet, this magnetic component operates continuously without electricity, batteries or charging.

Key Features

• Length: 40mm
• Width: 25mm
• Thickness: 10mm
• Rectangular block shape
• Ferrite / ceramic permanent magnetic material
• Economical permanent magnet solution
• Good natural corrosion resistance
• Good resistance to demagnetisation
• Suitable for magnetic holding and positioning
• Suitable for industrial and manufacturing applications
• Useful for product assemblies and custom magnetic systems
• Permanent magnetic operation
• No electricity, batteries or charging required
• Suitable for educational, engineering and OEM applications

Common Applications

• Industrial equipment
• Manufacturing
• Engineering
• Magnetic holding
• Magnetic positioning
• Product assemblies
• Fixtures and jigs
• Displays and signage
• Furniture and cabinetry
• Educational projects
• School science experiments
• Research and development
• Models and prototypes
• Craft and DIY projects
• Custom magnetic assemblies
• OEM products

40mm x 25mm x 10mm Rectangular Ferrite Magnet

This ferrite block magnet measures 40mm long x 25mm wide x 10mm thick, providing a practical rectangular magnetic component for integration into a variety of assemblies.

Potential installation locations include:

• Product housings
• Rectangular recesses
• Machinery components
• Fixtures and jigs
• Display systems
• Furniture components
• Educational equipment
• Custom fabricated assemblies

The dimensions describe the physical size of the magnet and should not be interpreted as an indication of pull force or magnetic field strength.

Ferrite Ceramic Permanent Magnet

Ferrite magnets are also commonly known as ceramic magnets because of their hard, ceramic-like composition.

Typical characteristics of ferrite magnetic material include:

• Good natural resistance to corrosion
• Good resistance to demagnetisation
• Economical permanent magnetic performance
• No electrical power requirement
• Broad industrial and general-purpose applications

Ferrite magnets commonly have a dark grey to black appearance where the magnetic material is exposed.

The specific ferrite grade has not been supplied for this product.

Magnetic Holding and Positioning

This rectangular ferrite magnet can be incorporated into magnetic holding and positioning systems.

Potential uses include:

• Positioning components
• Removable assemblies
• Product fixtures
• Jigs
• Display components
• Equipment assemblies
• Prototype systems

Depending on the application, the magnet may attract a compatible ferromagnetic steel target or another appropriately oriented magnet.

For magnet-to-magnet applications, polarity and magnetisation orientation should be confirmed before permanent installation.

Industrial and Manufacturing Applications

Ferrite block magnets are widely used in manufacturing and industrial applications where economical permanent magnetic performance is required.

Potential uses include:

• Manufacturing equipment
• Machinery
• Product assemblies
• Fixtures
• Positioning systems
• Equipment components
• Custom magnetic systems
• OEM products

Where vibration, shock or dynamic loading is present, magnetic holding should be evaluated under actual operating conditions.

Fixtures and Jigs

The rectangular 40mm x 25mm footprint may be useful for integration into fixtures and jigs.

Potential applications include:

• Assembly fixtures
• Positioning guides
• Inspection fixtures
• Temporary stops
• Removable components
• Prototype tooling

Magnets incorporated into fixtures should be mechanically supported appropriately and protected from direct impact.

Educational and Science Applications

Ferrite block magnets are also suitable for many educational demonstrations and science projects.

Potential demonstrations include:

• Magnetic attraction
• Magnetic repulsion
• Magnetic poles
• Magnetic fields
• Ferromagnetic material testing
• Magnet-to-magnet interaction
• Magnetic field mapping
• Basic physics experiments

The rectangular shape should not be used to infer the position of the north and south poles. Pole location depends on the magnetisation direction, which has not been supplied for this product.

Magnetic Performance

The practical magnetic performance of a ferrite block magnet depends on factors including:

• Ferrite grade
• Magnetisation direction
• Target steel composition
• Target steel thickness
• Available contact area
• Surface flatness
• Air gaps
• Paint and coatings
• Rust and contamination
• Load direction
• Magnetic circuit design

No specific pull force or magnetic flux density in Gauss has been supplied and these values should not be inferred from the magnet's dimensions alone.

Direct Pull vs Shear Force

Where the magnet is used for holding against steel, performance varies according to the direction of the load.

Direct pull occurs when the magnet is pulled perpendicular to the target surface.

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

Practical holding on vertical steel can therefore be lower than an ideal direct-pull result.

Surface friction, vibration, shock and leverage can further influence holding performance.

Air Gaps and Surface Contact

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

Air gaps may be created by:

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

For improved magnetic performance, maximise suitable contact with compatible ferromagnetic steel and minimise unnecessary gaps.

Bonding Ferrite Block Magnets

Where mechanical mounting is not suitable, ferrite block magnets may be bonded into an appropriately sized recess or onto a compatible substrate.

Before bonding:

• Ensure surfaces are clean and dry
• Remove grease and contamination
• Select an adhesive suitable for both materials
• Provide sufficient clearance around the magnet
• Avoid force-fitting
• Allow the adhesive to cure according to its instructions

Because ferrite is hard and brittle, the magnet should not be hammered or pressed forcefully into an undersized recess.

Compatible Target Materials

Ferrite magnets attract suitable ferromagnetic materials, including:

• Mild steel
• Iron
• Magnetic steel
• Suitable ferromagnetic components

They do not effectively attract 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 use.

Ferrite vs Neodymium Block Magnets

Ferrite and neodymium are both permanent magnetic materials, but they offer different characteristics.

Ferrite magnets are generally selected for:

• Economical magnetic applications
• Good natural corrosion resistance
• Good resistance to demagnetisation
• General-purpose industrial use
• Applications where maximum magnetic strength relative to size is not essential

Neodymium magnets generally provide:

• Higher magnetic performance relative to physical size
• Greater strength from a compact volume
• Advantages where installation space is limited

Ferrite can be an effective choice where physical space allows a larger magnet and economical, corrosion-resistant permanent magnetic performance is preferred.

Permanent Magnetic Operation

This ferrite 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: Ferrite Block Magnet
• Alternative Names: Ceramic Block Magnet, Rectangular Ferrite Magnet, Ferrite Bar Magnet, Ceramic Permanent Magnet
• Length: 40mm
• Width: 25mm
• Thickness: 10mm
• Shape: Rectangular Block
• Magnetic Material: Ferrite / Ceramic
• Magnet Type: Permanent Magnet
• Magnetic Operation: Permanent
• Power Required: None
• Target Materials: Compatible ferromagnetic iron and steel
• Primary Functions: Magnetic holding, positioning and magnetic attraction
• Typical Applications: Industrial equipment, manufacturing, product assemblies, fixtures, displays, education, prototypes and OEM products

Handling Ferrite Magnets

Ferrite is a hard and brittle ceramic material and should be handled carefully.

Avoid:

• Dropping the magnet onto hard surfaces
• Allowing magnets to collide forcefully
• Striking the magnet
• Applying bending forces
• Force-fitting into undersized recesses
• Drilling the magnet
• Cutting or machining the magnet

Ferrite magnets can chip, crack or break when subjected to impact or inappropriate mechanical loading. Broken pieces may have sharp edges.

Safety Information

Permanent magnets should be stored and handled carefully.

Keep this product away from babies and children, particularly where the magnet could become a loose component.

Magnets should also be kept an appropriate distance from:

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

Where magnetic release could create an injury or equipment hazard, use appropriate secondary mechanical retention rather than relying solely on magnetic attraction.

Please Note

This product is a Ferrite Block Magnet measuring 40mm long x 25mm wide x 10mm thick, manufactured from ferrite / ceramic permanent magnetic material.

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

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

Ferrite is hard and brittle and should not be drilled, cut, machined or subjected to force-fitting or impact.

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