Proportional Magnets

Proportional magnets are used in a variety of applications where precise control of the flow of liquid or gaseous media is required. Proportional solenoid valves are ideal for use in oil and other hydraulic applications as they provide excellent control over pressure and flow rate. We offer a wide range of proportional magnets, from low-pressure versions for use in pneumatic applications to high-pressure versions for use in hydraulic systems. Our proportional magnets are available in a variety of sizes and configurations to meet your specific requirements. Contact us today to find the perfect proportional magnet for your application.

Proportional solenoid valve PDA 060x 0yy

Proportional solenoid for hydraulic valves – size 60

Proportional solenoid valve PDA 045x yyy

Proportional solenoids for hydraulic valves – size 45

Proportional solenoid valve PDA 035x 0yy

Proportional solenoids for hydraulic valves – size 35

Proportional solenoid valve PDA 025x 0yy

Proportional solenoids for hydraulic valves – size 25

Do you want to find the perfect proportional magnet for your specific application? Schienle Magnettechnik can help! We offer a wide range of proportional magnets in various sizes and configurations to meet your specific requirements. Contact us today to find the perfect proportional magnet for your application.


A proportional magnet is an electromechanical device that uses a magnet to control the position of a movable element, such as a valve, proportional to the strength of an electric current flowing through it.

When electrical current is applied, a magnetic field is created. This magnetic field attracts the piston and causes it to move. The amount by which the piston moves is proportional to the applied current strength. The strength of the magnetic field can also be increased by increasing the number of turns of the coil.

Proportional magnets are more versatile than normal magnets. They can be used to create weaker or stronger magnetic fields, depending on how they are charged. In addition, they can be used to create a greater variety of shapes and sizes for the magnetic field.

Proportional magnets are used, for example, in hydraulics to control the movement of hydraulic cylinders and valves. An example of this is the control of hydraulic control valves in industrial applications such as excavators or concrete pumps. Other industrial applications are areas where precise control of force is required, such as in medical technology, operating tables, or dentist chairs. In the field of energy technology, proportional magnets are used for the control of solar mirrors. Furthermore, proportional magnets are used in electromechanical systems to control the movement of objects, for example in robots or automated production lines.

Which proportional magnet is right depends on the specific requirements and applications. There are different types of proportional magnets that differ in size, performance, sensitivity, linearity, and other factors. When selecting the right proportional magnet, the following factors should be considered:

  • Performance: The proportional magnet should be able to generate the required force or movement for the application.
  • Linearity: The magnetic field strength should be proportional to the applied electrical energy to ensure accurate control.
  • Sensitivity: The sensitivity of the magnet should match the requirement to translate small changes in the input signal into corresponding changes in the output force.
  • Environment: The proportional magnet should match the environmental conditions, including temperature, humidity, vibrations, and other factors.
  • Cost: The proportional magnet should be within the budget for the application.

It is important to carefully consider the requirements for the proportional magnet to ensure that it is suitable for the application. It is also advisable to consult manufacturer or supplier specifications to find the suitable proportional magnet.

If a proportional magnet is not working, you can perform the following troubleshooting steps:

  • Check the power supply and power adapter to ensure that the magnet is receiving the correct voltage.
  • Check the connections and make sure they are correctly connected.
  • Check the input signal of the magnet and make sure it is in the correct range.
  • Make sure the magnet is working linearly and has the correct ratio of input to output power.
  • Check the environment in which the magnet is operated to ensure that it meets the specifications of the magnet.

If all else fails, it may be that the magnet is damaged and needs to be replaced.
It is advisable to contact the manufacturer for further troubleshooting information.

Some of the most common problems with proportional magnets are:

  • Power supply failure: A faulty power supply can affect magnet operation or bring it to a complete halt.
  • Damaged or corroded connections: Loose, damaged, or corroded connections can lead to electrical faults and malfunctions.
  • Deteriorated linearity: Proportional magnets are designed to increase the output force proportional to the input signal. However, poor linearity can indicate a damaged magnet.
  • Environmental conditions: If the environment in which the magnet is operated exceeds the specifications of the magnet, this can lead to malfunctions. For example, moisture in the environment can cause corroded connections and short circuits.
  • Mechanical problems: If the magnet is subjected to excessive load, this can lead to mechanical faults such as breaks or cracks.
  • Aging: Proportional magnets can wear out over time and affect their performance and reliability.

Your contact
for technical advice / sales

Volker Buhl
Vertriebsingenieur/Business Development

Your request

Schienle Magnettechnik + Elektronik GmbH
In Oberwiesen 3 · 88682 Salem-Neufrach