Neodymium Cylinder Magnet – 6.35mm x 6.35mm

The Neodymium Cylinder Magnet – 6.35mm x 6.35mm is a compact cylindrical rare earth permanent magnet measuring 6.35mm in diameter x 6.35mm long. Manufactured from Neodymium Iron Boron (NdFeB), this small cylinder magnet provides high magnetic performance relative to its size and is suitable for precision engineering, sensors, electronics, product assemblies, positioning systems, models, prototypes and custom OEM applications.

Also known as a neodymium rod magnet, rare earth cylinder magnet, NdFeB cylinder magnet or cylindrical neodymium magnet, its equal diameter and length create a compact cylindrical form that can be incorporated into compatible round recesses, drilled housings and manufactured components.

As a permanent magnet, this 6.35mm x 6.35mm neodymium cylinder requires no electricity, batteries or charging to maintain its magnetic field.

Key Features

• 6.35mm diameter x 6.35mm length
• Compact cylindrical geometry
• Neodymium Iron Boron (NdFeB)
• High-performance rare earth permanent magnet
• Equal diameter and length
• High magnetic performance relative to size
• Suitable for precision and compact assemblies
• Useful for sensors and instrumentation
• Suitable for magnetic holding and positioning
• Can be incorporated into compatible cylindrical recesses
• Useful for models and prototypes
• Permanent magnetic operation
• No electricity or batteries required
• Suitable for custom and OEM magnetic assemblies

Common Applications

• Precision engineering
• Sensors and switches
• Electronics
• Instrumentation
• Product assemblies
• Magnetic positioning
• Small holding applications
• Models and miniatures
• Research and development
• Laboratory equipment
• Prototyping
• Craft and DIY projects
• Custom magnetic systems
• OEM products

Compact 6.35mm x 6.35mm Neodymium Cylinder Magnet

This neodymium magnet measures:

• Diameter: 6.35mm
• Length: 6.35mm

The equal diameter and length create a short, compact cylindrical profile suitable for integration into small products and mechanical assemblies.

Potential installations include:

• Cylindrical recesses
• Product housings
• Sensor assemblies
• Instrument components
• Positioning mechanisms
• Prototype devices
• Models
• Custom manufactured products

The 6.35mm x 6.35mm dimensions describe the physical size of the magnet and should not be interpreted as a pull-force or 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 volume makes neodymium particularly useful for small magnetic components where installation space is restricted.

Compact NdFeB cylinder magnets are commonly incorporated into:

• Sensors
• Electronics
• Engineering equipment
• Precision assemblies
• Product mechanisms
• Models
• Research equipment
• Custom OEM products

The specific NdFeB magnetic grade of this cylinder magnet has not been supplied and should not be assumed.

Sensors and Instrumentation

The compact cylindrical geometry can make this magnet useful for appropriately designed sensor and instrumentation applications.

Potential uses include:

• Position sensing
• Magnetic switches
• Proximity detection
• Instrument mechanisms
• Electronic assemblies
• Research equipment
• Prototype sensor systems

For sensing applications, the magnetic field direction, operating distance and compatibility with the sensor should be evaluated as part of the complete system.

Magnetisation Direction

The magnetisation direction of this 6.35mm x 6.35mm cylinder magnet has not been supplied.

Cylinder magnets may be manufactured with different magnetic pole orientations. Depending on the design, the north and south poles may be positioned on the circular ends or another orientation may be used.

Magnetisation direction can significantly affect:

• Sensor response
• Pole location
• Working face
• Holding performance
• Magnet-to-magnet interaction
• Magnetic circuit design

Where pole orientation is important, magnetisation direction should be confirmed before installation.

Magnetic Holding and Positioning

This small neodymium cylinder magnet can be incorporated into appropriately designed holding, locating and positioning systems.

Potential uses include:

• Locating components
• Removable connections
• Magnetic catches
• Position indicators
• Small fixtures
• Product mechanisms
• Prototype assemblies

Actual holding performance depends on the complete magnetic and mechanical assembly.

Magnetic Holding Performance

Actual magnetic performance depends on factors including:

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

No specific pull force or Gauss rating has been supplied for this product and these values should not be inferred solely from its dimensions.

Magnetic Attraction and Air Gaps

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

Magnetic attraction decreases rapidly as distance from the target increases.

Air gaps can be introduced by:

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

Because this magnet is only 6.35mm in size, even relatively thin non-magnetic layers can represent a significant air gap and reduce practical magnetic performance.

Direct Pull vs Shear Force

Magnetic holding performance varies according to the direction in which the load is applied.

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

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

Practical holding performance should therefore be assessed using the actual installation geometry and load direction.

Bonding Neodymium Cylinder Magnets

This compact cylinder magnet may be bonded into compatible cylindrical recesses and housings.

For reliable installation:

• Clean the magnet and substrate
• Remove grease, dust and contamination
• Select an adhesive compatible with both surfaces
• Follow the adhesive manufacturer's preparation instructions
• Avoid unnecessarily thick adhesive layers
• Allow the adhesive to cure fully before loading
• Keep curing temperatures within the magnet's permitted operating conditions
• Avoid force-fitting the magnet into an undersized hole

Neodymium Iron Boron is mechanically brittle, so press-fitting or forcing the magnet into an incorrectly sized recess may cause cracking or chipping.

Compatible Target Materials

Neodymium magnets attract ferromagnetic iron and compatible steels.

Suitable targets may include:

• Mild steel
• Iron
• Magnetic steel
• Ferromagnetic fasteners
• Compatible machinery components

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 Cylinder Magnets

Neodymium and ferrite are both permanent magnetic materials but provide different characteristics.

Neodymium magnets generally offer:

• Much higher magnetic strength relative to size
• Compact dimensions
• Suitability for precision applications
• Strong performance where installation space is restricted

Ferrite magnets are generally:

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

Neodymium can therefore be particularly useful where high magnetic performance needs to be incorporated into a small cylindrical component.

Permanent Magnetic Operation

This NdFeB cylinder is a permanent magnet and requires no external electrical supply.

It requires:

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

Its magnetic field remains continuously active during normal use.

Technical Specifications

• Product Type: Neodymium Cylinder Magnet
• Alternative Names: Neodymium Rod Magnet, Rare Earth Cylinder Magnet, NdFeB Cylinder Magnet, Cylindrical Neodymium Magnet
• Diameter: 6.35mm
• Length: 6.35mm
• Shape: Cylinder
• 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 sensing, holding, positioning and integration into compact magnetic assemblies
• Typical Applications: Precision engineering, sensors, electronics, instrumentation, models, prototypes and OEM products

Precision Engineering and OEM Applications

The compact 6.35mm diameter x 6.35mm length makes this neodymium cylinder magnet suitable for incorporation into small manufactured products and precision assemblies.

Potential users include:

• Engineers
• Product designers
• Electronics manufacturers
• Sensor developers
• Instrument manufacturers
• Model makers
• Research laboratories
• Prototype developers
• OEM manufacturers

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

Handling Small Neodymium Cylinder Magnets

Neodymium magnets can produce strong attraction relative to their size and should be handled carefully.

Neodymium Iron Boron is also hard and brittle, meaning magnets may chip, crack or fracture if allowed to collide forcefully.

Avoid:

• Allowing magnets to snap together uncontrollably
• Forceful impact against steel
• Crushing
• Excessive mechanical pressure
• Force-fitting into undersized recesses
• Drilling
• Cutting
• Conventional machining

Use controlled handling when bringing the magnet close to other magnets or ferromagnetic materials.

Please Note

This product is a Neodymium Cylinder Magnet measuring 6.35mm in diameter x 6.35mm long.

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 and load direction.

Neodymium Iron Boron is hard and brittle. Avoid drilling, cutting, machining, force-fitting, impact and uncontrolled collisions.

Small neodymium magnets present a serious ingestion hazard. Keep this product securely away from babies and children. If multiple magnets, or a magnet and another metal object, are swallowed, they can attract through internal tissue and cause severe injury requiring urgent medical attention.

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