Neodymium Cylinder Magnet – 5mm x 10mm | N45

The Neodymium Cylinder Magnet – 5mm x 10mm | N45 is a compact, high-strength rare earth permanent magnet measuring 5mm in diameter x 10mm long. Manufactured from N45 grade Neodymium Iron Boron (NdFeB), this cylindrical magnet delivers strong magnetic performance relative to its small dimensions and is suitable for engineering, manufacturing, sensors, positioning systems, product assemblies, fixtures, research, prototypes and custom OEM applications.

With a 2:1 length-to-diameter ratio, this magnet has a slender cylindrical profile that can be incorporated into appropriately sized circular recesses, housings and mechanical components. Its compact dimensions make it particularly useful where installation space is limited but strong permanent magnetic properties are required.

Also known as an N45 neodymium cylinder magnet, rare earth cylinder magnet, NdFeB rod magnet, 5mm x 10mm neodymium magnet or cylindrical rare earth magnet, this permanent magnetic component operates continuously without electricity, batteries or charging.

Key Features

• Diameter: 5mm
• Length: 10mm
• Dimensions: 5mm diameter x 10mm long
• Length-to-diameter ratio: 2:1
• Shape: Cylinder / short rod
• Material: Neodymium Iron Boron (NdFeB)
• Magnetic grade: N45
• Magnet type: Rare earth permanent magnet
• Strong magnetic performance relative to size
• Compact, slender cylindrical geometry
• Suitable for space-restricted assemblies
• Useful for engineering and manufacturing
• Suitable for sensors and instrumentation
• Useful for positioning and alignment
• Suitable for mechanical and product assemblies
• Useful for fixtures and jigs
• Suitable for research and prototypes
• Suitable for custom OEM magnetic assemblies
• Permanent magnetic operation
• No electricity, batteries or charging required

Common Applications

• Engineering
• Manufacturing
• Industrial equipment
• Electronic assemblies
• Product assemblies
• Mechanical components
• Positioning systems
• Magnetic alignment
• Fixtures and jigs
• Sensors and instrumentation
• Hall-effect sensing
• Reed switch activation
• Position detection
• Proximity sensing
• Magnetic switching
• Research and development
• Laboratory equipment
• Prototype devices
• Custom OEM products

5mm Diameter x 10mm Long Cylinder Magnet

This N45 neodymium cylinder magnet measures:

• 5mm diameter
• 10mm length

Its length is twice its diameter, creating a compact rod-like cylindrical profile.

This geometry can be useful where a magnet needs to fit into:

• Circular recesses
• Narrow housings
• Tubes
• Mechanical components
• Sensor assemblies
• Product housings
• Fixtures
• Prototype equipment

The stated 5mm x 10mm dimensions describe the physical geometry of the magnet and do not indicate its pull force, holding capacity or safe working load.

N45 Grade Neodymium Magnet

This cylinder magnet is manufactured from N45 grade Neodymium Iron Boron.

N45 is a high-performance neodymium grade that provides substantial magnetic energy relative to its physical size.

N45 neodymium magnets can be useful where:

• Strong permanent magnetism is required
• Compact dimensions are important
• Available installation space is limited
• A cylindrical magnetic component is preferred
• Higher magnetic performance than similarly sized ferrite magnets is required

The N45 designation identifies the magnetic material grade. It does not indicate a 45kg pull force.

What Does N45 Mean?

The N45 grade is a classification of Neodymium Iron Boron magnetic material.

The numerical designation relates to the material's maximum energy product and helps classify the magnetic performance potential of different NdFeB grades.

When magnets have equivalent dimensions, geometry and magnetisation configuration, higher numerical neodymium grades can generally provide greater magnetic performance than lower grades.

However, N45 does not directly specify:

• Pull force
• Surface Gauss
• Holding capacity
• Safe working load
• Magnetisation direction
• Pole orientation

These characteristics depend on the complete magnet design and application.

Neodymium Iron Boron Rare Earth Material

Neodymium Iron Boron is a high-performance rare earth permanent magnetic material widely used in modern engineering and manufacturing.

NdFeB magnets provide strong magnetic properties from relatively compact dimensions, making them useful for:

• Magnetic attraction
• Positioning
• Alignment
• Sensing
• Switching
• Product integration
• Magnetic assemblies

Their high magnetic energy density makes neodymium magnets particularly useful where installation space is restricted.

Compact 2:1 Cylindrical Geometry

At 10mm long and 5mm in diameter, this magnet's length is twice its diameter.

The resulting 2:1 geometry provides a distinctly cylindrical profile suitable for integration into appropriately designed components.

Potential installation locations include:

• Drilled recesses
• Circular housings
• Tubes
• Sensor bodies
• Mechanical mechanisms
• Product assemblies

Where the magnet is installed into a recess, appropriate dimensional clearance should be provided.

Do not force-fit the magnet into an undersized hole.

Sensors and Instrumentation

Compact neodymium cylinder magnets are frequently incorporated into magnetic sensing systems.

Potential applications include:

• Hall-effect sensors
• Reed switches
• Position sensors
• Proximity detection
• Magnetic switching
• Equipment monitoring
• Instrumentation

Sensor performance depends on:

• Magnetisation direction
• Pole orientation
• Magnet-to-sensor distance
• Sensor sensitivity
• Installation geometry
• Surrounding magnetic materials

The magnetisation configuration has not been supplied and should be confirmed where magnetic field orientation is critical.

Positioning and Alignment

This N45 cylinder magnet can also be incorporated into magnetic positioning and alignment systems.

Potential functions include:

• Component locating
• Repeatable positioning
• Magnetic alignment
• Assembly assistance
• Fixture positioning
• Prototype mechanisms

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

Fixtures and Jigs

Small N45 cylinder magnets can be incorporated into fixtures and jigs for manufacturing, assembly and inspection tasks.

Potential applications include:

• Temporary component positioning
• Locating parts
• Assembly aids
• Inspection fixtures
• Repeatable alignment
• Prototype tooling

Magnetic attraction should not replace appropriate mechanical fastening or clamping where detachment could create a safety hazard.

Magnetisation Direction

Cylinder magnets can be manufactured with different magnetisation configurations.

A 5mm diameter x 10mm long cylinder magnet could potentially be:

• Axially magnetised along its 10mm length
• Diametrically magnetised across its 5mm diameter
• Manufactured with another specialised pole configuration

The actual magnetisation direction and pole configuration have not been supplied and should not be assumed from the cylindrical shape.

Confirm this specification where pole location or magnetic field direction is important.

Magnetic Performance

Although this magnet is confirmed as N45 grade, practical magnetic performance depends on several factors.

These include:

• N45 material properties
• Magnetisation direction
• Pole configuration
• Magnetic circuit design
• Target steel composition
• Target steel thickness
• Available contact area
• Surface condition
• Air gaps
• Load direction
• Installation geometry

No specific pull force or magnetic flux density in Gauss has been supplied.

These values should not be estimated from the N45 designation or physical dimensions alone.

N45 Does Not Mean 45kg Pull Force

The N45 designation does not mean this magnet has a 45kg pull force.

N45 identifies the grade of the neodymium magnetic material.

Pull force is a separate performance measurement influenced by:

• Magnet dimensions
• Magnetisation
• Target material
• Target steel thickness
• Contact area
• Air gaps
• Test conditions

Use a verified pull-force specification where holding capacity is important.

Direct Pull vs Shear Force

Where this magnet is used against suitable ferromagnetic steel, holding performance changes according to load direction.

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

Shear loading occurs when the magnet is encouraged to slide parallel to the target.

Shear performance can be influenced by:

• Surface friction
• Contact quality
• Surface coatings
• Installation orientation
• Air gaps
• Mechanical leverage
• Vibration

Testing the completed assembly under realistic conditions is recommended where magnetic holding is important.

Air Gaps and Magnetic Attraction

Even small air gaps can reduce the practical attraction of a compact neodymium magnet.

Potential sources of separation include:

• Paint
• Powder coating
• Adhesive
• Plastic
• Protective films
• Product housings
• Dirt
• Rust
• Mechanical clearance

For maximum practical attraction, unnecessary separation between the magnet and target should generally be minimised.

Target Steel Thickness

Where this magnet is used against ferromagnetic steel, the properties of the target material affect magnetic performance.

Important factors include:

• Steel composition
• Steel thickness
• Target dimensions
• Available contact area
• Surface condition
• Magnetic saturation

Thin steel may not provide the same magnetic response as a suitably thick ferromagnetic target.

Testing against the actual target material is recommended for performance-critical applications.

Bonding a Neodymium Cylinder Magnet

This N45 cylinder magnet can be bonded into an appropriately designed housing or recess.

Before bonding:

• Confirm the required magnetic orientation
• Confirm polarity where multiple magnets are involved
• Clean both bonding surfaces
• Remove grease, dust 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 surface should be confirmed.

Avoid Force-Fitting

Neodymium Iron Boron is hard but brittle.

Do not force this 5mm diameter cylinder magnet into an undersized hole or recess.

Excessive mechanical pressure may cause:

• Chipping
• Cracking
• Splitting
• Fracturing
• Damage to the surface finish

Provide appropriate mechanical clearance and use a suitable bonding or retention method.

Do Not Machine Neodymium Magnets

Finished neodymium magnets should not be modified using conventional workshop methods.

Avoid:

• Drilling
• Cutting
• Grinding
• Crushing
• Machining

These processes can damage the brittle NdFeB material and any protective surface coating.

If another diameter or length is required, select a magnet manufactured to the appropriate dimensions.

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.

N45 Neodymium vs Ferrite Cylinder Magnets

N45 neodymium and ferrite magnets provide different magnetic characteristics.

N45 neodymium cylinder magnets generally provide:

• Higher magnetic performance relative to size
• Strong magnetic properties from compact dimensions
• Advantages in space-restricted applications
• Suitability for sensors and engineered assemblies

Ferrite magnets generally provide:

• Lower cost
• Good natural corrosion resistance
• Good resistance to demagnetisation
• Suitability where larger magnet dimensions are acceptable

N45 neodymium is commonly selected where strong magnetic performance from a compact cylindrical permanent magnet is required.

Permanent Magnetic Operation

This N45 neodymium cylinder 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 Name: Neodymium Cylinder Magnet – 5mm x 10mm | N45
• Product Type: Neodymium Cylinder Magnet
• Alternative Names: N45 Neodymium Cylinder Magnet, Rare Earth Cylinder Magnet, NdFeB Cylinder Magnet, Rare Earth Rod Magnet, 5mm x 10mm Neodymium Magnet
• Diameter: 5mm
• Length: 10mm
• Dimensions: 5mm diameter x 10mm long
• Length-to-Diameter Ratio: 2:1
• Shape: Cylinder / Short Rod
• Magnetic Material: Neodymium Iron Boron (NdFeB)
• Magnetic Grade: N45
• Magnet Type: Rare Earth Permanent Magnet
• Magnetic Operation: Permanent
• Power Required: None
• Compatible Targets: Suitable ferromagnetic iron and steel
• Primary Functions: Magnetic attraction, positioning, alignment, sensing, switching and product integration
• Typical Applications: Engineering, manufacturing, sensors, fixtures, electronics, product assemblies, research, prototypes and OEM products

Safety and Handling

Neodymium magnets can attract other magnets and nearby ferromagnetic objects suddenly and should be handled carefully.

Potential hazards include:

• Pinched skin or fingers
• Magnet collisions
• Chipping
• Cracking
• Fragmentation

Neodymium is brittle despite its strong magnetic properties. Avoid uncontrolled collisions and excessive mechanical pressure.

Serious Ingestion Hazard

Small neodymium magnets present a serious ingestion hazard.

If multiple magnets are swallowed, or a magnet is swallowed together with another magnetic or metallic object, they can attract through internal tissue and cause severe injury.

Keep this magnet securely away from babies and children. If incorporated into another product, ensure the magnet is securely retained so it cannot become loose or accessible.

Seek urgent medical attention if magnet ingestion is suspected.

Permanent magnets should also be kept an appropriate distance from pacemakers, implanted medical devices, magnetic storage media, magnetic cards and sensitive electronic equipment.

Please Note

This product is an N45 Neodymium Cylinder Magnet measuring 5mm in diameter x 10mm long, manufactured from Neodymium Iron Boron (NdFeB) rare earth magnetic material.

The N45 designation identifies the magnetic material grade and does not mean the magnet has a 45kg pull force.

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

Actual magnetic performance depends on the N45 material properties, magnetisation configuration, magnetic circuit, target material, target steel thickness, available contact area, surface condition, air gaps, load direction and installation geometry.

Neodymium is a hard and brittle magnetic material. Avoid impact, force-fitting, drilling, cutting, grinding or machining.

The stated 5mm diameter x 10mm length describes the physical geometry of the magnet and does 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.