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Technical definitions

The electromagnet

On this page you will find general explanations and definitions about electromagnets.
The complete catalogue is available for download.

What different types of solenoids are there?


Actuating solenoid


Component for affecting a limited lengthwise or rotating movement

Linear solenoid

Actuating solenoid that triggers a stroke movement via the effect of a magnetic field created by the excitation winding (also: single stroke solenoid)

Rotating solenoid

Actuating solenoid that triggers a rotating movement via the effect of a magnetic field created by the excitation winding. With regard to their functionality, rotating solenoids may be designed as single stroke or reverse stroke rotating solenoids featuring single or double currentless limit positions (monostable-bistable)

Oscillating solenoid

Actuating solenoid that triggers a periodic back and forth movement via the effect of a magnetic field created by the excitation winding in a spring-mass system featuring an oscillating frequency, which is generally related to a fixed proportion of the frequency to the applied voltage
Holding magnets, holding solenoid


Device or component for adhering ferromagnetic objects

Reversing linear solenoid

An actuating solenoid with electromagnetic force effect in two movement directions. Depending on the excitation, the stroke movement takes place from the respective stroke start position to the associated stroke limit position. In this case, the stroke limit position of one direction is simultaneously the stroke start position of the opposite movement direction

Single stroke spreader solenoid


A linear solenoid that is mainly used for ventilating block brakes due to its design and technical data

Single stroke double spreader solenoid


A linear solenoid consisting of two single stroke spreader solenoids that is mainly used for ventilating block brakes due to its design and technical data

Pulsing linear solenoid

A device featuring an armature stroke movement caused by electromagnetic forces from the stroke start position to the stroke limit position, whereby the armature is held by an integrated permanent solenoid while the current is switched off
Control solenoid, proportional solenoid, regulating solenoid


Linear stroke solenoids that are mainly used to activate valves in hydraulic controls and regulating devices due to their design and technical data

Valve solenoid

A linear solenoid that is mainly used for activating valves in pneumatic and hydraulic control devices due to its design and technical data

Single stroke solenoid with pivoting armature


A linear solenoid featuring an armature that completes a
pivoting movement around a pivot point