We develop and produce your individual electromagnet in our special factory in small and large series.
Schramme has been developing and producing electromagnets since 1975. Proportional solenoids are our strength. The special challenge here is the reduction of hysteresis.
These electromagnets/solenoids are commonly used in control valves. The spectrum of control magnets as well as the variety ...
Spreader solenoids are used almost only as actuation (releasing) magnets for brakes. Single-acting spreader solenoids are ...
Solenoid (electromagnet) is an umbrella term for all types of electromagnetic actuators. It consists of a coil of electrically conductive wire through which a current flows.
As soon as the current flows through the coil, a magnetic field is generated around the coil. The strength of the magnetic field depends on the strength of the current flowing through the coil and the number of turns in the coil.
Depending on the design, the magnetic force of the solenoid is used to perform linear & rotational movements or to apply holding forces to components, thereby fixing or braking them.
An Solenoid comes in different types:
Solenoids, Holding Solenoids, Bistable Solenoids, Reversing Solenoids, DC Solenoids, Electromagnet Valves, Twin Solenoids, Switching Solenoids, Electromagnetic Clutches, Miniature Solenoids, Proportional Solenoids, Spreading Solenoids, Braking Solenoids, Permanent Holding Solenoids, Locking Solenoids and other special solenoids for various applications.
Most of our products are custom designed and then mass produced.
A major advantage of solenoids is their strength. Significantly greater magnetic forces can be applied with an solenoid than with classic permanent magnets. This makes them ideal for applications that require a high magnetic force.
Furthermore, solenoids impress with their versatility. They are used in a wide variety of applications. From excavators to church organs, from escalators to drilling machines, from trucks to summer toboggan runs - magnetic technology can be found almost everywhere.
Controllability is also an advantage, as solenoids can be controlled precisely and quickly, making them ideal for applications where fast and accurate control of magnetic force is required.
Another strength of solenoids is their efficiency. They only consume power when they are switched on. Permanent magnets, on the other hand, always have a magnetic force and are difficult to control and turn off.
Summary: What are the greatest advantages of electromagnetic systems or magnetic technology?
All of our innovations, research, development, design, manufacturing, whether small series or large series, can be found in a wide variety of industrial sectors.
Examples of applications of electromagnets are:
We offer electromagnets or complex magnet systems from Schramme for your future success.
The housing of an solenoid is usually a frame or shell made of a magnetically and electrically conductive material, such as iron or steel.
It encloses the magnetic core and coil of the electromagnet and serves to concentrate and strengthen the magnetic field inside by maintaining the flow of magnetic field lines and preventing the magnetic field from propagating in undesirable directions. The housing also protects the coil from external influences such as vibration, moisture or damage.
The coil usually consists of a wire wound around a magnetisable core. The wire used for the coil is usually made of a conductive material such as copper. The number of turns in the coil, the thickness of the wire and the shape of the coil all affect the properties of the magnetic field produced.
The armature is the moving part that strives for the ideal state of the iron circuit when the solenoid is energised, i.e. it closes the air gap.
The iron core is the stationary part in the solenoid towards which the armature moves when the coil is energised.
We have often been asked by business partners how a solenoid works. For this reason, we have decided to make a short contribution.
How it works
If you need a customised solenoid for your project, please contact us. Our development team will advise you on the implementation of a technical solution for your project.
Your Schramme team
The force of an solenoid depends on several variables, including:
The more turns the coil has, the stronger the magnetic field is generated, resulting in a greater force.
The higher the current that flows through the coil, the stronger the magnetic field and therefore the force.
A larger core usually means a stronger magnetic field and therefore a greater force.
The product of the current strength and the number of turns influences the field strength and thus, via the iron circuit, the magnetisation and then the magnetic force.
As a developer and producer of electromagnets is Magnetbau Schramme GmbH & Co. KG certificated.
You can here download and view the certifications or copy, save and print the documents for your records.
More informations you get in our Mediathek section on this website.