Neodymium Countersunk Pot Magnet – 42mm x 9mm

The Neodymium Countersunk Pot Magnet – 42mm x 9mm is a powerful, low-profile rare earth pot magnet measuring 42mm in diameter x 9mm 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.

A countersunk mounting hole allows the magnetic assembly to be mechanically secured using a compatible countersunk screw, making this 42mm pot magnet suitable for permanent or semi-permanent installation in industrial equipment, fixtures, jigs, signage, displays, furniture, cabinetry, machinery and custom OEM assemblies.

Also known as a 42mm countersunk pot magnet, neodymium cup magnet, countersunk rare earth magnet, magnetic mounting pot or countersunk holding magnet, this compact magnetic assembly provides permanent magnetic attraction without electricity, batteries or charging.

Key Features

• Diameter: 42mm
• Height: 9mm
• Neodymium Iron Boron (NdFeB) rare earth magnet
• Pot-style magnetic assembly
• Countersunk mounting hole
• Designed for use with a compatible countersunk screw
• Pot housing helps concentrate magnetic flux toward the primary working face
• Low-profile 9mm height
• Suitable for magnetic holding and positioning
• Suitable for permanent or semi-permanent mechanical installation
• Suitable for industrial, commercial and engineering applications
• Permanent magnetic operation
• No electricity, batteries or charging required
• Suitable for custom and OEM magnetic assemblies

Common Applications

• Industrial equipment
• Manufacturing
• Engineering
• Fixtures and jigs
• Magnetic holding
• Magnetic positioning
• Machinery
• Signage
• Displays
• Furniture and cabinetry
• Removable panels
• Access panels
• Equipment assemblies
• Workshop fixtures
• Custom magnetic systems
• OEM products

42mm Diameter x 9mm High Pot Magnet

This neodymium pot magnet measures 42mm in diameter x 9mm high, providing a broad circular magnetic base within a relatively low-profile assembly.

The combination of a 42mm diameter and 9mm height makes this magnetic pot suitable for applications where useful magnetic holding is required without a deep installation profile.

Potential installations include:

• Equipment housings
• Fixtures
• Jigs
• Display structures
• Furniture
• Cabinetry
• Machinery
• Removable components
• Custom fabricated assemblies

The stated dimensions describe the physical magnetic assembly and should not be interpreted as a pull-force or safe-working-load rating.

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 where substantial magnetic performance is required from a relatively compact physical size.

Typical characteristics include:

• High magnetic performance relative to size
• Compact permanent magnetic design
• Suitability for space-restricted assemblies
• Permanent magnetic operation
• No external electrical power requirement
• Broad industrial and engineering applications

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

How a Pot Magnet Works

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

The housing forms part of the magnetic circuit and helps direct and concentrate magnetic flux toward the primary working face.

This design makes pot magnets particularly useful for:

• Holding
• Positioning
• Mounting
• Retention
• Fixtures
• Equipment integration

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

The exact housing material and surface finish have not been supplied for this product.

Countersunk Mounting Hole

This pot magnet features a countersunk mounting hole, allowing it to be mechanically secured to a suitable substrate using a compatible countersunk-head screw.

Countersunk mounting can provide a relatively flush fastener profile and is useful for:

• Fixtures
• Jigs
• Furniture
• Display systems
• Machinery
• Equipment assemblies
• Signage
• Custom mounting systems

The specific countersunk-hole diameter and compatible screw size have not been supplied. Confirm the required fastener dimensions before installation.

Installing a Countersunk Pot Magnet

When installing the magnet:

• Select a compatible countersunk screw
• Confirm the screw dimensions before installation
• Ensure the supporting substrate is suitable
• Keep the magnetic working face unobstructed
• Tighten the fastener evenly
• Avoid excessive torque
• Confirm the magnet is securely mounted before loading

Do not overtighten the countersunk screw.

Neodymium magnetic material is hard and brittle, and excessive mechanical force through the mounting area may damage the magnetic assembly.

Fixtures and Jigs

Countersunk pot magnets can be useful in manufacturing fixtures and jigs where a mechanically secured magnetic holding point is required.

Potential applications include:

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

The countersunk mounting configuration allows the magnet itself to be secured while the magnetic working face remains available for attraction to compatible steel components.

Furniture, Cabinetry and Removable Panels

The low-profile 42mm x 9mm format can also be incorporated into furniture and display systems.

Potential uses include:

• Removable panels
• Access covers
• Cabinet components
• Display panels
• Furniture assemblies
• Concealed magnetic retention
• Equipment covers

Where the magnet is incorporated into a recess, ensure adequate clearance and avoid force-fitting the assembly.

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
• Vibration and shock

No specific pull force or magnetic flux density in Gauss has been supplied and these values should not be inferred from the 42mm diameter alone.

Direct Pull vs Shear Force

Magnetic holding varies significantly with load direction.

Direct pull occurs when the pot 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 a vertical steel surface can therefore be substantially lower than an ideal direct-pull result.

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

Air Gaps and Surface Contact

Pot magnets generally provide their best magnetic performance when the working face has close, broad contact with suitable ferromagnetic steel.

Performance can be reduced by gaps created by:

• Paint
• Powder coating
• Protective films
• Dirt
• Rust
• Uneven surfaces
• Surface curvature
• Other non-magnetic layers

For improved magnetic holding, 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 may also be weakly magnetic or non-magnetic and should be tested before relying on magnetic attachment.

Pot Magnet vs Standard Neodymium Disc Magnet

A standard neodymium disc magnet exposes its magnetic field differently from a pot-style magnetic assembly.

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

This makes pot magnets particularly useful for magnetic holding and mounting applications where attraction is primarily required from one side of the assembly.

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

Permanent Magnetic Operation

This countersunk pot magnet uses a permanent neodymium 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, Countersunk Holding Magnet, Magnetic Mounting Pot
• Diameter: 42mm
• Height: 9mm
• 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
• Profile: Low Profile
• 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, fixtures, jigs, machinery, signage, displays, furniture, cabinetry and OEM assemblies

Handling Neodymium Pot Magnets

Neodymium magnetic material is hard and brittle and should be handled carefully.

Avoid:

• Allowing magnets to collide uncontrolled
• Dropping the magnet onto hard surfaces
• Overtightening the countersunk fastener
• Striking the magnetic assembly
• Drilling or modifying the magnet
• Force-fitting into an undersized recess
• Applying unnecessary impact

Strong neodymium magnets can also attract nearby steel objects or other magnets suddenly, creating pinch and collision hazards.

Safety Information

Handle this magnet carefully and keep fingers clear when bringing it into contact with steel surfaces or other magnets.

Keep magnets an appropriate distance from:

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

Keep magnets securely away from babies and children.

Where unexpected magnetic release could cause injury, equipment damage or another hazard, use appropriate secondary mechanical retention rather than relying solely on magnetic attraction.

Please Note

This product is a Neodymium Countersunk Pot Magnet measuring 42mm in diameter x 9mm high. It incorporates a Neodymium Iron Boron rare earth permanent magnet within a pot-style housing and features a countersunk mounting hole for compatible countersunk fasteners.

No specific neodymium grade, pull force, Gauss rating, countersunk-hole diameter, compatible screw 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 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.

The countersunk fastener should be tightened carefully to avoid damaging the magnetic assembly.

This product is not certified lifting equipment. Do not use it for overhead or safety-critical lifting, and incorporate secondary mechanical retention wherever magnetic release could create a hazard.