Neodymium Countersunk Pot Magnet – 75mm x 18mm

The Neodymium Countersunk Pot Magnet – 75mm x 18mm is a large, powerful rare earth pot magnet measuring 75mm in diameter x 18mm high. It combines a Neodymium Iron Boron (NdFeB) permanent magnet with a pot-style housing that helps direct and concentrate magnetic flux toward the primary working face for magnetic holding, positioning and mounting applications.

Featuring a countersunk mounting hole, this 75mm neodymium pot magnet can be mechanically secured using a compatible countersunk-head fastener. Its substantial diameter makes it suitable for industrial equipment, manufacturing, engineering, fixtures, jigs, machinery, signage, displays, removable components and custom OEM magnetic assemblies where a large magnetic mounting base is required.

Also known as a 75mm countersunk pot magnet, neodymium cup magnet, countersunk rare earth magnet, magnetic holding pot, countersunk magnetic base or rare earth mounting magnet, this magnetic assembly provides permanent magnetic attraction without electricity, batteries or charging.

Key Features

• Diameter: 75mm
• Height: 18mm
• Large neodymium pot-style magnetic assembly
• Neodymium Iron Boron (NdFeB) rare earth permanent magnet
• Countersunk mounting hole
• Designed for mechanical installation with a compatible countersunk fastener
• Pot housing helps direct and concentrate magnetic flux toward the primary working face
• Suitable for magnetic holding, positioning and retention
• Suitable for industrial and engineering applications
• Mechanically mountable design
• Permanent magnetic operation
• No electricity, batteries or charging required
• Suitable for custom and OEM magnetic systems

Common Applications

• Industrial equipment
• Manufacturing
• Engineering
• Magnetic holding
• Magnetic positioning
• Fixtures and jigs
• Machinery
• Production equipment
• Removable panels
• Equipment covers
• Signage and displays
• Workshop fixtures
• Custom fabricated equipment
• Prototype systems
• OEM magnetic assemblies

75mm Diameter x 18mm High Pot Magnet

This neodymium pot magnet measures 75mm in diameter x 18mm high, creating a substantial circular magnetic assembly for applications requiring a large magnetic contact area.

The 75mm diameter can be useful for integration into:

• Industrial fixtures
• Machinery
• Equipment housings
• Production jigs
• Large displays
• Removable components
• Custom fabricated structures
• Engineering assemblies

The stated dimensions describe the physical magnetic assembly and should not be interpreted as its pull force, lifting capacity or safe working load.

Neodymium Iron Boron Rare Earth Magnet

This pot magnet incorporates Neodymium Iron Boron (NdFeB), a high-performance rare earth permanent magnetic material.

Neodymium is widely used in industrial magnetic systems because it can provide high magnetic performance relative to physical size.

Typical characteristics include:

• High magnetic performance relative to size
• Compact permanent magnetic operation
• Strong attraction to compatible ferromagnetic materials
• Suitability for industrial and engineering assemblies
• No external electrical power requirement

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

How a Neodymium Pot Magnet Works

A pot magnet combines permanent magnetic material with a surrounding housing to create a focused magnetic assembly.

The pot-style housing helps direct and concentrate magnetic flux toward the primary working face.

This configuration makes pot magnets particularly suitable for:

• Magnetic holding
• Positioning
• Retention
• Fixtures
• Jigs
• Equipment mounting
• Removable components

The housing also provides a practical structure for integrating the magnetic material into a mechanical assembly.

The specific housing material and finish have not been supplied.

Countersunk Mounting Hole

This neodymium pot magnet features a countersunk mounting hole, allowing the assembly to be secured to a suitable substrate using a compatible countersunk-head fastener.

Countersunk mounting can be useful in:

• Fixtures
• Jigs
• Machinery
• Equipment assemblies
• Displays
• Signage
• Custom mounting systems

The specific countersunk-hole diameter, countersink dimensions and compatible screw or bolt size have not been supplied.

Confirm fastener compatibility before installation.

Installing a Countersunk Pot Magnet

When installing this magnet:

• Select a compatible countersunk fastener
• Confirm the required fastener dimensions
• Ensure the supporting substrate is suitable
• Keep the primary magnetic working face unobstructed
• Tighten the fastener evenly
• Avoid excessive torque
• Confirm secure mounting before applying a load

Do not overtighten the countersunk fastener.

Neodymium magnetic material is hard and brittle. Excessive force through the countersunk mounting area may crack or otherwise damage the magnetic component.

Industrial Fixtures and Jigs

The substantial 75mm diameter can make this pot magnet suitable for appropriately designed industrial fixtures and jigs.

Potential applications include:

• Assembly fixtures
• Positioning equipment
• Inspection fixtures
• Production tooling
• Temporary stops
• Removable equipment components
• Prototype systems

For industrial applications involving movement, vibration or shock, magnetic holding should be evaluated under actual operating conditions.

Magnetic Holding and Positioning

This pot magnet can be incorporated into magnetic holding systems where a mechanically mounted permanent magnetic base is required.

Potential applications include:

• Removable components
• Equipment panels
• Positioning systems
• Machinery components
• Display structures
• Fixtures
• Production equipment
• Custom fabricated assemblies

Where magnetic release could create a hazard, appropriate secondary mechanical retention should be incorporated.

Magnetic Performance

Actual magnetic holding performance depends on factors including:

• Neodymium grade
• Magnetic circuit
• Target steel composition
• Target steel thickness
• Available contact area
• Surface flatness
• Air gaps
• Paint and coatings
• Rust and contamination
• Load direction
• Mechanical leverage
• Surface friction
• Vibration and shock

No specific pull force or magnetic flux density in Gauss has been supplied for this product and these values should not be inferred from its 75mm diameter.

Pull Force vs Safe Working Load

Magnetic pull force and safe working load are not interchangeable.

A laboratory-style pull-force measurement may be obtained under favourable conditions involving:

• Thick, clean steel
• Flat surface contact
• Minimal air gap
• Direct perpendicular pull
• Controlled test conditions

Real-world installations may produce substantially different results.

A magnetic pull-force figure, even where one is available, should not automatically be treated as a safe working load or lifting capacity.

This product is not certified lifting equipment.

Direct Pull vs Shear Force

Magnetic holding performance varies considerably with load direction.

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

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 significantly lower than an ideal direct-pull result.

Leverage, vibration, impact and dynamic movement can further reduce practical holding.

Air Gaps and Surface Contact

Pot magnets generally perform best when the primary working face has broad, flat contact with suitable ferromagnetic steel.

Magnetic attraction can be reduced by:

• Paint
• Powder coating
• Protective films
• Adhesive layers
• Dirt
• Rust
• Uneven surfaces
• Surface curvature
• Physical separation

For improved magnetic performance, maximise direct contact and minimise unnecessary air gaps wherever practical.

Compatible Target Materials

This neodymium pot magnet is designed to attract suitable ferromagnetic materials, including:

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

It will not effectively attract non-magnetic materials such as:

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

Many stainless steel grades are weakly magnetic or non-magnetic and should be tested before relying on magnetic attachment.

Neodymium Pot Magnet vs Standard Disc Magnet

A standard neodymium disc magnet and a neodymium pot magnet use similar rare earth magnetic material but differ in construction.

A pot magnet incorporates the magnet into a housing that helps direct magnetic flux toward the primary working face.

This design is particularly useful where the magnet needs to be:

• Mechanically mounted
• Integrated into equipment
• Used primarily for attraction from one face
• Incorporated into fixtures or jigs

The countersunk hole also provides a practical mechanical mounting point that a standard solid disc magnet does not inherently provide.

Permanent Magnetic Operation

This neodymium countersunk pot magnet uses a permanent magnetic system.

It requires:

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

Magnetic attraction remains continuously active during normal use.

Technical Specifications

• Product Type: Neodymium Countersunk Pot Magnet
• Alternative Names: Countersunk Rare Earth Pot Magnet, Neodymium Cup Magnet, Magnetic Holding Pot, Countersunk Magnetic Base
• Diameter: 75mm
• Height: 18mm
• Shape: Round Pot Magnet
• Magnetic Material: Neodymium Iron Boron (NdFeB)
• Magnet Type: Rare Earth Permanent Magnet Assembly
• Construction: Pot-Style Magnetic Assembly
• Mounting: Countersunk Hole
• Magnetic Operation: Permanent
• Power Required: None
• Target Materials: Compatible ferromagnetic iron and steel
• Primary Functions: Magnetic holding, positioning, mounting and retention
• Typical Applications: Industrial equipment, manufacturing, fixtures, jigs, machinery, displays and OEM assemblies

Handling Large Neodymium Pot Magnets

A 75mm neodymium pot magnet should be handled with particular care.

Neodymium magnets can attract steel objects and other magnets suddenly and with considerable force. This can create significant pinch, impact and collision hazards.

When handling:

• Keep fingers and hands clear of contact points
• Approach steel surfaces slowly and under control
• Keep other magnets and loose steel objects away
• Do not allow magnets to snap together
• Avoid dropping the magnet
• Do not strike the magnetic assembly
• Do not drill, cut or machine the magnetic material
• Do not overtighten the countersunk fastener

Neodymium is hard and brittle. Uncontrolled collisions can cause cracking, chipping or fragmentation, and broken pieces may have sharp edges.

Safety Information

Keep this magnet securely away from babies and children.

Maintain an appropriate distance from:

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

Large neodymium magnets can create serious pinch injuries if fingers or skin become trapped between the magnet and a steel surface or another magnet.

Where unexpected magnetic release could result in injury, falling equipment or property damage, use appropriate secondary mechanical retention.

Please Note

This product is a Neodymium Countersunk Pot Magnet measuring 75mm in diameter x 18mm high. It incorporates a Neodymium Iron Boron rare earth permanent magnet within a pot-style housing and features a countersunk mounting hole for mechanical installation.

No specific neodymium grade, pull force, Gauss rating, countersunk-hole diameter, countersink dimensions, compatible fastener size, housing material, coating or finish, dimensional tolerance or maximum operating temperature has been supplied and these specifications should not be assumed.

Actual magnetic holding performance depends on the neodymium grade, magnetic circuit, target steel composition and thickness, available contact area, surface condition, air gaps, load direction, leverage and operating conditions.

Do not overtighten the countersunk fastener, as excessive mechanical force may damage the magnetic assembly.

This product is not certified lifting equipment and should not be used for overhead or safety-critical lifting. Appropriate secondary mechanical retention should be used wherever magnetic release could create a hazard.