Electro magnets are DC electro magnets that consume a particularly low amount of operating current. These magnets generate a force field at the pole faces that is used to hold, support and fix ferromagnetic objects. It is mounted via threaded holes on the back.
The magnetic circuit, which is open when switched on, holds ferromagnetic objects which have no wearing parts due to their design. In the standard version, the coil is embedded in cast resin; the holding surface has a north and south pole and a non-magnetic area. The object being held falls off when the power is turned off. Any residual magnetism can be neutralized by applying a non-magnetic foil or an anti-remanence system using spring force.
Connection to the electrical supply is made via free stranded wires or via plugs. For safety reasons, the electro magnet should be selected with a safety factor of 1.5-3. The maximum holding forces for both systems can only be achieved dependent on the material thickness with direct contact and the surface roughness of the material. The holding force is 90% of the rated voltage of the electro magnets when at operating temperature. This reduces in line with use cases with other conditions. Our range includes a large selection of electro magnets in a wide variety of designs. As the manufacturer, we also offer you individual special productions according to your unique requirements.
Areas of application:
- safety technology
- mechanical engineering
What are electro magnets?
Electro magnets generate a magnetic field by means of current. They have a coil through which an electric current flows, creating a magnetic field around the conductor. The conducting wire in the coils is wound over top of itself in many turns, making each winding loop act like a circular conductor. Many coils also contain an iron core to provide additional concentrated conduction of the magnetic field.
What is the holding force of electro magnets?
This depends on various factors such as size, design, application, and material use. Our standard electro magnets deliver a holding force of anywhere from 3 N up to 45,000 N.
What is the difference between electro magnets and permanent electro magnets?
In electro magnets, the holding force is only generated by supplying current. Permanent electro magnets, on the other hand, are permanently magnetic in the deenergized state and lose their holding force when current is supplied (can be used in a power-saving manner).
What volt designs are available for electro magnets?
We can produce our electro magnets in designs from 3-400 volts.