Disc and cylinder magnets for round magnetic interfaces.

A general round product family covering thin discs, cylinders, rods, and reviewed features across rare-earth material, coating, magnetization, and working-distance requirements.

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Round neodymium disc and cylinder magnets arranged in a stack

Product familyDiscs, cylinders, rods, and round drawing-defined variants

Common materialsSintered NdFeB, sintered SmCo, or bonded rare-earth material where suitable

Common custom optionsDiameter, thickness, length, holes, countersinks, coating, and pole direction

Typical usesSensors, switches, couplings, holding, actuators, and compact assemblies

Product

Diameter and axial length define the family; function defines the details.

Disc and cylinder listings commonly group many grades, coatings, holes, and magnetization directions under one round product type. This page follows that practical structure while keeping seller-specific numbers out of the public claim set. The useful specification connects diameter and length with the field required at the working position.

Review custom geometry, magnetization, coating, and inspection capabilities

Natural fit for coaxial and round interfaces

Axial or diametrical magnetization routes

Compact forms for sensing, coupling, and holding

Common sourcing situations

The primary geometry is a solid round disc, cylinder, or rod.
The assembly is coaxial or uses a circular contact or sensing face.
Axial or diametrical magnetization can be referenced to the physical part.
A center hole, countersink, step, groove, or coating may be required after feasibility review.

Details to confirm before production

Thin discs are brittle and need realistic thickness, flatness, and handling requirements.
Diametrical magnetization requires a clear angular reference and orientation control.
Holes, countersinks, and long aspect ratios change machining and breakage risk.
Field or force must be measured at the actual working distance and mating condition.

Specification

Define the round interface and the working field together.

A round magnet specification should combine diameter, thickness or length, edge condition, material, coating, magnetic direction, physical reference, working distance, and inspection method. Similar-looking catalog parts can behave differently when the pole direction or aspect ratio changes.

Common information used to define a disc or cylinder magnet.

Geometry	Diameter, thickness or axial length, edge breaks, center holes, countersinks, steps, grooves, and datums.
Material route	NdFeB, SmCo, or bonded rare-earth route selected by output, temperature, environment, geometry, and cost.
Magnetization	Axial, diametrical, multipole, polarity mark, angular reference, and magnetized or unmagnetized delivery.
Surface and assembly	Coating, bonding, press fit, sleeve, housing, contact face, cleanliness, and handling.
Inspection and packaging	Diameter, length, coating state, polarity, field at position, orientation, separators, and safe packing.

Technical Data

Generic disc and cylinder product reference.

The fields below reflect common product-listing options. They organize a sourcing conversation but do not promise stock sizes, grades, tolerances, output, or delivery terms.

Specification field	Common catalog options	Confirm for production
Dimensions	Diameter × thickness for discs; diameter × length for cylinders and rods	Finished dimensions, tolerances, datums, and coated state
Material	NdFeB, SmCo, or bonded rare-earth route	Grade, operating temperature, load line, and environment
Surface	Nickel, epoxy, zinc, PTFE, passivation, or application-reviewed protection	Exposure, coating build, adhesion, friction, and edge coverage
Magnetization	Axial, diametrical, multipole, or drawing-defined direction	Polarity, angular reference, delivery state, and test position
Features	Center hole, countersink, step, groove, flat, chamfer, or marking	Machining feasibility, breakage risk, and functional tolerances
Supply condition	Individual parts, matched pairs, polarity-sorted, orientation-packed, or assembly-ready	Quantity, packaging, marking, cleanliness, and acceptance documents

This is generic catalog information. Final capability and acceptance are confirmed after drawing, material, magnetic, coating, and application review.

Common catalog variants

Common round variants remain part of one disc and cylinder family.

CAD review for disc and cylinder magnet dimensions and interfaces

Thin discs

Round parts where diameter is larger than thickness and the main pole faces are commonly axial.

Magnetic testing equipment for round magnet field verification

Cylinders and rods

Round parts with greater axial length for sensing, actuation, holding, and compact magnetic circuits.

Protected packaging for magnetized disc and cylinder components

Featured round parts

Disc or cylinder forms with reviewed holes, countersinks, grooves, steps, flats, or orientation marks.

Application examples

Common applications for solid round magnetic components.

Precision device context using compact round magnetic targets

Sensors and switches

Compact round magnetic targets matched to working distance, pole direction, and package orientation.

Industrial equipment context for disc and cylinder magnets

Couplings and holding

Coaxial or face-to-face magnetic interfaces used for transfer, latching, positioning, and retention.

Manufacturing context supporting repeat round magnet supply

Compact actuators and devices

Discs and cylinders integrated into solenoids, small motion systems, instruments, and drawing-defined assemblies.

Engineering guides

Use the same engineering checks across every product family.

Material, coating, magnetization, tolerances, and inspection remain product attributes. Confirm them against the drawing and application instead of creating another duplicate product category.