SmCo Disc Magnet | D9.7mm x 5.88mm with 2mm Channel | Diametrically Magnetised

Description

The SmCo Disc Magnet – D9.7mm x 5.88mm with 2mm Channel | Diametrically Magnetised is a compact, high-performance rare earth magnet designed for precision engineering, magnetic assemblies and specialised industrial applications. Manufactured from Samarium Cobalt (SmCo), this permanent magnet offers excellent magnetic stability, strong resistance to demagnetisation and superior temperature performance compared with many conventional magnetic materials.

Measuring 9.7mm in diameter x 5.88mm in height, this cylindrical disc magnet features a 2mm channel and a specialised diametric magnetisation orientation, making it suitable for applications requiring magnetic poles positioned across the diameter rather than on the flat circular faces.

Unlike conventional axially magnetised disc magnets, which have north and south poles on opposite flat faces, this diametrically magnetised SmCo magnet has its north and south poles positioned on opposing sides of its cylindrical circumference.

This magnetic orientation can be particularly useful in rotating magnetic systems, position sensing, magnetic coupling arrangements and custom-designed mechanisms where the magnetic field must act across the diameter of the component.

Samarium Cobalt magnets are valued for their excellent magnetic performance, corrosion resistance and ability to maintain magnetic properties under demanding operating conditions. These characteristics make them a popular choice for aerospace, automotive, industrial automation, electronic instrumentation and precision engineering applications.

The integrated 2mm channel provides an additional design feature for specialised mounting or assembly requirements. Its exact channel geometry and intended function should be confirmed before incorporation into a precision assembly.

Also known as a diametrically magnetised Samarium Cobalt magnet, SmCo cylindrical magnet, rare earth sensor magnet, diametric disc magnet, channelled SmCo magnet or high-temperature rare earth magnet, this component is suitable for engineering applications where magnetic orientation, material stability and compact dimensions are important.

Key Features

• Material: Samarium Cobalt (SmCo)

• Magnet Type: Permanent Rare Earth Magnet

• Shape: Cylindrical Disc

• Diameter: 9.7mm

• Height: 5.88mm

• Channel Size: 2mm

• Magnetisation: Diametrically Magnetised

• North and south poles positioned across the diameter

• Compact cylindrical design for precision assemblies

• Excellent resistance to demagnetisation

• High magnetic stability

• Good corrosion resistance compared with unprotected neodymium

• Suitable for specialised magnetic field arrangements

• Useful for rotating and position-sensing applications

• Suitable for engineering and industrial equipment

• No external electrical power required to maintain its magnetic field

Common Applications

This diametrically magnetised SmCo magnet may be suitable for:

• Magnetic position sensors

• Rotary position sensing

• Magnetic encoders

• Industrial automation

• Precision instrumentation

• Magnetic coupling systems

• Rotating magnetic assemblies

• Aerospace equipment

• Automotive engineering

• Electronic instrumentation

• Magnetic switching mechanisms

• Research and development

• Custom magnetic components

• High-temperature equipment

• Specialised mechanical assemblies

• Prototype development

Application suitability depends on the required magnetic field, channel geometry, operating temperature and mechanical installation.

Diametrically Magnetised – North and South Poles Across the Diameter

One of the defining characteristics of this SmCo magnet is its diametric magnetisation.

In a diametrically magnetised cylindrical magnet, the magnetic field is oriented across the diameter of the cylinder rather than through its height.

This means the north and south magnetic poles are located on opposing sides of the curved cylindrical surface.

Diametric vs Axial Magnetisation

Diametrically Magnetised Disc Magnet:

• North and south poles are positioned across the diameter.

• The magnetic axis runs sideways through the cylindrical body.

• Suitable for specialised rotational and sensing applications.

Axially Magnetised Disc Magnet:

• North and south poles are located on the opposite flat circular faces.

• The magnetic axis runs through the height of the cylinder.

• Commonly used for general holding and attachment applications.

Selecting the correct magnetisation direction is essential for achieving the intended magnetic field within an assembly.

A diametrically magnetised magnet should not be substituted for an axially magnetised magnet without confirming compatibility.

Precision Dimensions – D9.7mm x 5.88mm

This magnet has a compact cylindrical profile measuring:

• Diameter: 9.7mm

• Height: 5.88mm

• Channel: 2mm

These dimensions make it suitable for small mechanical assemblies, compact instrumentation and custom-designed magnetic systems.

The precise dimensional tolerances have not been supplied.

For applications involving tight mechanical clearances or press-fit components, confirm the manufacturer's tolerances before installation.

Integrated 2mm Channel

This SmCo magnet incorporates a 2mm channel, providing a specialised geometric feature for integration into compatible assemblies.

Depending on the channel's design and orientation, it may be incorporated into a custom mounting, alignment or mechanical retention arrangement.

Potential considerations include:

• Channel geometry

• Channel orientation

• Mechanical clearance

• Assembly alignment

• Retention method

• Magnetic pole orientation

Important: The channel's exact profile, position and intended mounting function have not been specified. Do not assume it is a through-hole, threaded opening or standard shaft bore.

For precision engineering applications, confirm the channel geometry before finalising the assembly design.

Samarium Cobalt (SmCo) Rare Earth Magnetic Material

Samarium Cobalt is a high-performance permanent magnet material manufactured from alloys containing samarium and cobalt.

SmCo magnets are valued for their combination of magnetic strength, temperature stability and corrosion resistance.

Benefits of Samarium Cobalt Magnets

Excellent Temperature Stability

SmCo magnets generally retain their magnetic properties over a wider temperature range than standard neodymium magnets.

The actual maximum operating temperature depends on the specific SmCo grade and manufacturing specifications.

Strong Resistance to Demagnetisation

SmCo magnets have high resistance to demagnetisation, making them suitable for applications involving challenging magnetic environments.

Good Corrosion Resistance

Samarium Cobalt generally offers better intrinsic corrosion resistance than uncoated neodymium magnets.

High Magnetic Performance

SmCo is a rare earth magnetic material capable of producing strong magnetic fields in compact component sizes.

Long-Term Magnetic Stability

SmCo magnets are widely used in applications where consistent magnetic performance is important over extended operating periods.

Suitable for High-Temperature Applications

Samarium Cobalt magnets are commonly selected for applications involving elevated temperatures.

Compared with standard neodymium magnets, SmCo materials generally offer improved high-temperature magnetic stability.

This makes them useful for certain:

• Industrial equipment

• Automotive systems

• Aerospace components

• High-temperature sensors

• Precision instruments

• Specialised mechanical assemblies

However, the specific SmCo grade and maximum operating temperature of this magnet have not been supplied.

Do not assume a particular temperature rating without confirmation.

Magnetic Sensors and Position Detection

Diametrically magnetised cylindrical magnets are commonly used in certain magnetic sensing arrangements.

When correctly positioned relative to a compatible sensor, the magnetic field may be used to detect rotational movement or angular position.

Potential applications include:

• Rotary position sensors

• Magnetic encoders

• Angular measurement systems

• Industrial control equipment

• Automated mechanisms

• Custom sensing assemblies

The magnet's suitability depends on the sensor type, magnetic field strength, pole orientation, distance and mechanical arrangement.

For sensor applications, confirm the required magnetic field characteristics before installation.

Magnetic Coupling and Rotating Assemblies

The diametric magnetisation of this SmCo disc magnet may also be useful in certain rotating magnetic systems.

Potential applications include:

• Magnetic couplings

• Rotational alignment systems

• Custom mechanical mechanisms

• Contactless magnetic interactions

• Research and prototype assemblies

Diametrically magnetised magnets can create a magnetic field pattern that changes relative to a stationary sensor or component as the magnet rotates.

This can be useful in appropriately designed systems where angular movement or rotational position must be detected.

Installation and Mounting Considerations

SmCo magnets are hard and brittle, requiring careful handling during installation.

The appropriate mounting method depends on the mechanical design and operating environment.

General Installation Recommendations

1. Confirm the required magnetisation direction.

2. Verify the magnet's diameter, height and channel geometry.

3. Identify the north and south pole positions.

4. Check the mechanical clearance within the assembly.

5. Select a suitable retention or mounting method.

6. Avoid excessive mechanical pressure.

7. Protect the magnet from impact.

8. Test the completed assembly under realistic operating conditions.

For applications involving vibration or rotating equipment, ensure the magnet is securely retained using a method appropriate for the operating environment.

Do not force-fit, drill, grind or machine finished SmCo magnets.

Magnetic Performance Considerations

The magnetic performance of this SmCo magnet depends on several factors, including:

• SmCo material grade

• Magnet dimensions

• Diametric magnetisation

• Magnetic circuit design

• Air gaps

• Sensor or target position

• Operating temperature

• Surrounding ferromagnetic materials

• Mechanical alignment

The magnetic field distribution of a diametrically magnetised magnet differs from that of an axially magnetised disc magnet.

For precision sensing or engineering applications, the magnetic field should be evaluated in the intended assembly.

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

SmCo vs Neodymium Magnets

Both Samarium Cobalt and Neodymium Iron Boron are rare earth permanent magnet materials.

However, they have different performance characteristics.

SmCo magnets are often preferred where temperature stability, corrosion resistance and long-term magnetic performance are particularly important.

Technical Specifications

Compliance & Safety

Strong Magnetic Field: SmCo magnets can attract ferromagnetic objects and interact with other magnets. Handle carefully.

Brittle Material: Samarium Cobalt magnets are hard and brittle and may chip, crack or shatter if dropped, struck or subjected to excessive mechanical stress.

Pinch Hazard: Keep fingers clear when handling magnets near steel components or other magnets.

Children: Keep magnets away from children. Swallowed magnets can cause severe internal injuries and require urgent medical attention.

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

Machining: Do not drill, cut, grind or machine finished SmCo magnets. Magnet dust and fragments can present safety hazards.

Temperature: Although SmCo magnets are known for good high-temperature performance, the specific maximum operating temperature must be confirmed for this product.

Mechanical Retention: For rotating or vibrating equipment, ensure the magnet is securely retained to prevent detachment.

Load-Bearing Applications: Do not use this magnet for overhead lifting or safety-critical retention without appropriate engineering assessment.

Frequently Asked Questions

What are the dimensions of this SmCo disc magnet?

The magnet measures 9.7mm in diameter x 5.88mm in height and features a 2mm channel.

What does SmCo stand for?

SmCo stands for Samarium Cobalt, a high-performance rare earth permanent magnet material.

What does diametrically magnetised mean?

Diametric magnetisation means the north and south magnetic poles are positioned on opposite sides of the cylindrical circumference rather than on the flat circular faces.

What is the difference between diametric and axial magnetisation?

Axially magnetised disc magnets have poles on opposite flat faces, while diametrically magnetised magnets have poles across the diameter.

What is the 2mm channel used for?

The magnet includes a 2mm channel that may be incorporated into a specialised mechanical assembly. Its exact geometry and intended mounting function have not been specified.

Is this magnet suitable for magnetic sensors?

It may be suitable for certain magnetic sensing applications, including rotary position sensing, depending on the required magnetic field and sensor configuration.

Can this magnet be used in high-temperature environments?

Samarium Cobalt magnets generally offer excellent temperature stability. However, the maximum operating temperature for this particular magnet has not been specified.

Is Samarium Cobalt stronger than Neodymium?

Neodymium magnets generally provide greater maximum magnetic strength for comparable sizes, while SmCo magnets often offer advantages in temperature stability and corrosion resistance.

Does this magnet require a protective coating?

SmCo generally has good intrinsic corrosion resistance. The coating, if any, for this specific product has not been confirmed.

Can I drill or modify this magnet?

No. Finished SmCo magnets are brittle and should not be drilled, cut or machined.

What is the pull force of this magnet?

A specific pull-force rating has not been supplied. For diametrically magnetised magnets used in sensors or specialised assemblies, magnetic field characteristics may be more relevant than conventional pull force.

Is this magnet suitable for rotating equipment?

It may be suitable for appropriately designed rotating assemblies, provided the magnet is securely retained and its magnetic field characteristics meet the application requirements.

Related Products

Customers considering this diametrically magnetised SmCo magnet may also be interested in:

• Samarium Cobalt Disc Magnets

• Samarium Cobalt Cylinder Magnets

• Samarium Cobalt Block Magnets

• Diametrically Magnetised Magnets

• Axially Magnetised Disc Magnets

• High-Temperature Rare Earth Magnets

• Neodymium Disc Magnets

• Neodymium Cylinder Magnets

• Magnetic Sensor Magnets

• Custom Rare Earth Magnets

Please Note

This SmCo Disc Magnet – D9.7mm x 5.88mm with 2mm Channel is manufactured from Samarium Cobalt rare earth magnetic material and features diametric magnetisation.

Its dimensions are 9.7mm diameter x 5.88mm height, with a 2mm channel.

The north and south magnetic poles are positioned across the diameter of the cylindrical body, rather than on the flat circular faces.

The exact SmCo grade, channel geometry, pull force, surface Gauss, coating, dimensional tolerances and maximum operating temperature have not been supplied.

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

For precision engineering, sensing or high-temperature applications, confirm the relevant technical specifications and test the magnet within its intended assembly before use.