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Glossary of Magnetic Terms, Definitions, Terminology


Magnetic Terminology for Users of Magnets & Magnetic Equipment

Alnico – AlNiCo (Aluminum-Nickel-Cobalt) cast magnet material.

Alnico Assembly – Holding magnet with excellent temperature resistance of up to 900°F, typically more susceptible to demagnetizing forces than other magnet materials.

Anisotropic Magnet – Magnet with a preferred direction of magnetic orientation.

Bipole Electromagnet – An electromagnet design that has the magnetic coil positioned between two parallel steel plates that act as the poles - one north and one south.

BHmax – Maximum Energy Product of a given magnet material expressed in GOe (Gauss/Oersteds) or MGOe (Million Gauss/Oersteds).

Ceramic – usually used to describe Strontium Ferrite magnet material.

Ceramic Assembly
- Holding magnet potted with epoxy resistant to 180°F and in general greater resistance to demagnetizing forces as compared to other magnet materials.

Chip Coolant Separator
– removes ferrous and non-ferrous particles from a coolant flow system. Can be used as a stand-alone process or if used in combination with filter media, increases the media’s service life.

Demagnetizer – a device which utilizes an alternating electrical current to eliminate any residual magnetism in parts passed through or over its surface.

Demagnetizing Force
– critical forces such as temperature, shock, vibrations and electrical or magnetic currents that may cause a magnetic material to partially or completely demagnetize.

Electromagnet – a magnetic device used for holding or lifting which generates its magnetic field from an electric current.

Ferrous Material – any material containing iron, it is therefore magnetically attracted.

Gauss – B (in the CGS system) - unit of measure of magnetic induction. One gauss is equal to one Maxwell per square centimeter.

Holding Magnet – a magnetic device designed to hold ferrous material such as in a fixture or die.

Holding Value – typically measured in pounds, this is the amount of force required to break a magnet’s contact from a surface.

Island Pole Electromagnet
– A round or rectangular electromagnet design that has an outer pole and an inner or "island" pole – one acts as north and one as south.

L/D Ratio – describes the relationship of the length of a given magnet to its diameter or surface area equivalent.

Lifting Magnet – a magnetic device designed for lifting of ferrous bar stock and plate, usually in a manual application.

Magnetic Belt Conveyor - a belted conveyor utilizing a stationary magnet under its belt to assist in transferring ferrous
parts and scrap materials. This style of conveyor can be inverted and applied in overhead transfer operations.

Magnetic Flux - Total magnetic induction within a certain area.

Magnetic Drum – a round, cylindrical magnetic device used to separate ferrous from non-ferrous material, usually with a stationary magnet and rotating drum. A Magnetic Drum may also be the rotating component of a magnetic chip coolant separator.

Magnetic Pulley – a round, cylindrical magnetic device typically used as a head pulley of a belt conveyor to attract ferrous material to the belt and then drive the ferrous material by the friction of the belt. Often used to transmit torque or to separate ferrous from non-ferrous material at the discharge end of a belt conveyor.

Magnetic Roller – a round magnetic device used to directly contact flat or cylindrical ferrous material. Often used to transmit torque in order to propel sheet, tube or bar stock.

Magnetic Sheet Fanner – a magnetic device designed to separate stacked sheet stock. The magnetic fanner induces magnetism into a stack of sheets causing the individual sheets to repel each other, this allows the top sheets to rise for easy removal.

Magnetic Slide Conveyor
– a beltless conveyor with no external moving components, it utilizes magnetic assemblies that travel under a stainless steel slider plate for transferring ferrous parts or ferrous scrap materials.

Metal Detector – an electronic device that monitors a product for tramp metal content. Typically used in a metal separation system after a magnet to detect non-ferrous materials such as aluminum and non-ferrous stainless steel.

Non-ferrous Material – material that does not contain any iron and is therefore not magnetically attracted.

Orientation – Direction which an anisotropic magnet should be magnetized to optimize the magnetic field properties.

Permanent Magnet – any of the various magnetic materials, a permanent magnet has a magnetic field energized by the flow of the electrons of the material itself.

Permanent Magnet Assembly – a magnetic device that is designed using a combination of permanent magnet material and pole pieces, various configurations allow for varying applications.

Pole Piece – metal with a high ferrous content that is used to direct a magnetic field.

Rare Earth – commonly used to describe high energy magnet material such as NdFeB (Neodymium-Iron-Boron) and SmCo (Samarium-Cobalt).

Rare Earth Assembly – Holding magnet designed with a temperature range comparable to ceramic, but with the greatest holding values as compared to other magnet materials.

Reachout – a type of magnetic design or term that describes a magnet’s strength characteristics at a distance from its surface.

Saturation – Condition where all magnetic moments have become oriented in one direction.

Stabilization – Exposing a magnet to demagnetizing influences as intended to the application, to prevent irreversible loss during the magnets operational application.

Tramp Iron – unwanted ferrous material in a product flow such as nuts, bolts, wrenches or scale.

Tramp Metal – unwanted ferrous and non-ferrous material in a product flow such as bolts, aluminum or stainless steel.


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Headquarters: 11827 Globe Road, Livonia, Michigan 48150
Toll Free: (800) 959.0047   Phone: (734) 591.2200   Fax: (734) 591.2582

Industry Type

Machining & Grinding Industry Equipment
Metal Stamping Industry Equipment

Magnets and Magnet Assemblies

Permanent Holding Magnets and Assemblies

Ceramic Magnets

Alnico Magnets

Rare Earth–High Strength Magnets

Magnetic Materials
Rare Earth-Neodymium, High Energy Magnets

Rare Earth-Samarium Cobalt Magnets

Ceramic Magnets

Alnico Magnets

Flexible Magnets

Custom Engineered Magnets
Blueprint Holders and Office Hardware

Magnetic Sweepers, Lifts and Tools

Magnetic Sweepers

Manual Push

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Tow Behind

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Skid Steer / Hi-Lo

Special / Custom

Magnetic Lifts


Electro Battery Operated


Magnetic Tools

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Magnetic Paws

Press Feeders and Transfers

Tank Cleaners

Magnetic Ground

Magnetic Positioners/Work Holders


Electromagnets and Demagnetizers


Round Electromagnets

Rectangular Electromagnets

Bipolar Electromagnets

DC Power Supplies


Magnetic Conveyors, Transporters, and Automation

Magnetic Slide Conveyors

Beltless Magnetic Conveyor Features

Considerations and Standard Options

2 ¾" to 5" Profiles

8" to 11" Profiles

Steel Hinge Belt Conveyors

Drag & Chain Conveyors

Magnetic Conveyor Belts

Vibratory Feeder Conveyors - Transporters

Sheet Handling Conveyors & Components

Magnetic Rails and Rollers

Custom Automation / Systems Integration

Magnetic Separators - Filter Solutions

Coolant Filters

Powder, Bulk & Solid Magnets

Plate Magnets and Crossbelts

Magnetic Drum Separators

Overhead Magnetic Belt Separators

Magnetic Pulley and Magnetic Separator Conveyors

Inline Magnets - Hump - Elbow - Pneumatic

Gravity Flow Magnet Separators

Tube Magnets

Grate Magnets, Magnetic Drawers

Sheet Separators (Fanners)

Laser Cutting - Sheet Metal Fabrication

Precision Laser Cutting Capabilities

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