DELTA JS, your partner for rotor dynamics.

We help our clients to solve problems and to become more efficient.



DELTA JS AG offers software, engineering and consulting services in the field of rotordynamics. Typically the company deals with high precision machines, whose functioning or service life is affected by even the smallest vibrations.

The program MADYN 2000 ® developed and offered by DELTA JS is a leading software for rotordynamics allowing to simulate complex rotor-gear-bearing systems with all types of bearings (spring and damper bearings, rolling element bearings, fluid film bearings, active magnetic bearings) and bearing supports.

The company disposes of powerful analysis tools to offer comprehensive engineering and consulting services in the area of rotor dynamics. The experience of DELTA JS covers a wide field of sophisticated machinery such as turbo machines for industrial applications, power generation and propulsion.

The next rotordynamic seminar including an additional day for the demonstration of practical rotordynamic analyses with MADYN 2000 will take place in Zurich from  April 20th to 22nd 2016. Registration forms are available here.
The next magnetic bearing seminar will be held in Zurich in June 2016. Updated registration forms will be available here as soon as the exact date is fixed.
Rotordynamic Software MADYN 2000
Versions 4.1 is distributed. It has many new features, among others a general parameter variation and configurable plots for diagrams. More details are explained in the release notes.

Vibrations in Rotating Machines - SIRM 2015, Magdeburg, Germany
DELTA JS presented two papers: "High Speed Hydrodynamic Journal Bearings - State of the Art Calculations" by Andreas Fuchs, Joachim Schmied, Alexander Kosenkov and "Analyses of Systems with Complex Gears"by Frédéric Gaulard, Alexander Kosenkov, Joachim Schmied.

Decaying Vibration

Decaying vibration


AchillesQualifiedJQS stamp

Our comany is a qualified supplier in Achilles JQS - a Joint Qualification System for suppliers to the oil industry in Norway and Denmark.