Frequently Asked Questions

When was SCHLEIFRING established?

SCHLEIFRING was established in 1974. For almost 50 years we have stood for the highest level of precision and absolute reliability when transmitting data, electrical power, air and fluids between moving and stationary components.

Where does SCHLEIFRING manufacture?

SCHLEIFRING manufactures in Germany, China and the USA.

Where is SCHLEIFRING based?

Our headquarters are in Fürstenfeldbruck near Munich (Germany). Further plants are located in Chelmsford (USA) and Tianjin (China). You can find more information about our locations here:

In which industries are slip rings used?

Our slip rings can be found in almost all applications. For example, SCHLEIFRING is the market leader for slip rings in medical CT scanners, in wind turbines, or in industrial applications such as filling plants or machine tools. You can also find our slip rings in baggage screening systems as well as on board of aircrafts for the on-board entertainment.

How much does a slip ring cost?

Our products are manufactured based on your requirements. The price for a slip ring depends on the design, the technical equipment and the amount of data, current or media to be transmitted. With our new SCHLEIFRING configurators (, you can also assemble individual and modular solutions that are cost-optimized for small quantities and order them online.

What is a slip ring?

Whenever power or signals are to be transmitted from a rotating to a stationary part, a connection must be established between the two units. This is performed by a slip ring using various technologies, such as a gold-wire system or induction.

How does a slip ring work?

That depends on the technology used. Conventional contacting slip rings consist of a rotating part with sliding tracks, over which the brush mounted on the stationary part glides. This enables the rotating and stationary parts to remain in contact. SCHLEIFRING is also a pioneer in the development of contactless slip rings that are able to transmit large digital data packets or, via fiber optic cables, also analog data in real time.

What makes our slip rings special?

Our slip rings convince through the highest level of precision and absolute reliability. This is guaranteed by a team of almost 700 specialists, technological know-how from Germany and almost 50 years’ experience in the development and manufacture of rotary signal transmitters for customers around the globe.

How long are the delivery times at present?

All our products are adapted to meet your specific requirements and are subjected to strict quality inspections. For this reason, our delivery times vary ddepending on the requirements. A quicker option is our modular MIA configurator. Here you can quickly and easily configure a slip ring online according to your requirements. In this case, the delivery time is only a few days.

What can be transmitted using a slip ring?

Whatever you want to move reliably and cost-effectively – whether on land, at sea, in air – our products guarantee perfect transmission of electrical energy, signals, data and media.

What is the difference between the different transmission technologies?

Our tried-and-true gold wire technology, for example, guarantees excellent power and data transmission. Contactless technologies are particularly well suited to the transmission of digital data in real time at up to 60 GB/s. Analog data can be transferred in large quantities, for example, via an optical rotary signal transmitter with up to 60 independent fibers. In addition, carbon brushes are also frequently used when low-cost solutions are required to transmit high levels of electrical power, or new technologies are used that replace the carbon brush technology. We also offer high-end solutions for water, oil, coolant, gas and air. We would be pleased to advise you.

Which material is most suitable for the transmission of data?

That depends on a large number of parameters and framework conditions. We would be pleased to advise you.

How big are slip rings?

The size of our slip rings varies according to the application. The diameter of a slip ring can range from just a few centimeters up to two meters.

Which slip rings do you have in your wind portfolio?

SCHLEIFRING has been producing slip rings for the pitch system, also referred to as pitch control, since 2003.

How is maintenance performed?

For our contacting systems we recommend our contact oil series LubeLife. It improves the performance and the transmission quality of your gold-wire system and extends the service life. You can order LubeLife comfortably in our online shop.

How long is the service life of a slip ring?

Transmission quality and service life depend to a large extent on the operating conditions. The loading and environmental conditions found in the application are normally taken into consideration during the development stage. Our experts recommend suitable maintenance cycles and guarantee a minimum service life for your specific application.