Tech overview Related products


The latest GMS Mk6 is the gate opener to the digital world. It can monitor torsional vibrations within the whole powertrain and predict failures through the early detection of abnormal behavior. The connectivity and data gathering in the new GMS Mk6 enables big data analysis and machine learning. 30 years of experience in Vibration Monitoring and more than 60 years’ experience in torsional vibration analysis gives us a deep understanding of the system.


The Geislinger Monitoring System is a continuous monitoring and measuring system for rotating components of the whole powertrain. It is intended for use in a wide range of applications, such as marine propulsion, power generation, wind power, rail, compressors, industrial applications or for test beds.

The GMS is widely used in conjunction with Geislinger torsional vibration dampers and torsional elastic couplings. Its main task is to monitor the components and recognize functional deviations. When safety limits are reached or exceeded, an alarm is triggered. This allows the user to take appropriate measures to prevent component or system failures.

Moreover, reports can be issued and used as an official service document. It is recognized by classification societies and can also prevent carrying out an overhaul.


One key feature of the GMS Mk6 generation is its connectivity. The use of the GMS Mk6 makes it possible to send data continuously to the Geislinger Analytics Platform (GAP). This data can be used for further system analysis or condition monitoring, using machine learning or statistical analysis combined with expert knowledge.

Different data interfaces and supported bus protocols enable full interconnectivity to connect the GMS with third-party systems, to push data into the Geislinger Analytics Platform or to allow remote access for the Geislinger service team to the GMS Mk6. Analysis results are provided for the operator to set up predictive maintenance and optimize performance. Moreover, with the GMS Mk6 it is now possible to get access to its user-interface on any device by a remote desktop connection, for example. The connectivity to other systems allows the combination of different data sources which provides an even better system understanding and enhanced analysis.


Beyond the standard applications of the Geislinger product monitoring, individual and tailor-made torsional vibration monitoring solutions for almost all powertrain components are available. These solutions are designed according to extensive system analysis by Geislinger’s torsional vibration experts together with the wide-ranging engineering know-how in the field of high-performance powertrains at Geislinger.

Customized algorithms filter and calculate static and dynamic twists between the elements as well as the vibratory angle. The calculated torsional vibration values are shown on an intuitive user interface, which can optionally be displayed on an operating panel with touch controls or on an existing computer in the control center.

On the hardware side, there are multiple physical interface options available (see Technical Data) to guarantee a flawless connection to third-party systems. The GMS Mk6 has a modular design and can be customized by adding additional input and output signals, monitoring functionalities or algorithms. Reliable sensors in combination with sturdy measuring gears precisely detect torsional vibrations in couplings, dampers and the entire powertrain.

On the software side, various Ethernet base pro-tocols and experience with several data platforms allow for an easy integration of vibration data into a third-party platform.


  • Additional operational safety, low running costs, increased service life due to problems being detected early
  • Reduction of unplanned downtimes and thus significant cost savings
  • Simple monitoring of torsional vibrations
  • Modular design, easily expandable
  • High level of connectivity, for integration into the ship’s network or existing AMS
  • Cloud-based online monitoring of torsional vibrations and permanent measurements due to the access to the Geislinger Analytics Platform
  • Automated data acquisition and corresponding data analysis: Switch from periodic to condition-based maintenance
  • Geislinger Worldwide After Sales Service


  • Self-monitoring system unit with a malfunction alarm
  • System Unit (IP20), Junction Box (IP65), Operator Panel (front IP65, back IP20) Electrical and environmental testing according to IACS E-10 rules and type approval from DNV GL
  • 24 V DC power supply, overvoltage protection State-of-the-art connectivity options
  • Physical interfaces: 1x USB 3.0 for data acquisition, 1x EtherCAT, 2x Gbit Ethernet for ship network integration, Micro SD, 1x DVI, 1x CAN, 1x RS 232/422/485
  • Supported Ethernet-based protocols: Modbus TCP, HTTP / HTTPS / WebSocket, OPC UA. Additional protocols are available on request (MQTT, SSH, SCP, FTP, …)
  • 6 potential-free relay switches for alarm output (4 x opener and 2 closers)
  • 4 analogue output (4 – 20 mA), resolution 12 bit (1x Buzzer connected)
  • Maximum operating temperatures: 55°C
  • 24 V DC power supply, overvoltage protection
  • Maximum operating temperatures: 70°C
  • 4 digital inputs
  • 4 analog inputs
  • Temperature measurement unit: 4 inputs, supported resistance sensor types NTC, PT 100, PT 1000, NI 100, NI 1000
  • TFT-Display with touchscreen
  • (7” TFT-LCD, 1.024 x 600 Pixel) Maximum operating temperatures: 55°C 24 V DC power supply
  • DVI / RFB
  • Height: 135 mm, Width: 200 mm, Depth: 27 mm, Weight: 1,1 kg
  • Inductive or hall sensors
  • Temperature sensors (PT100)
  • Pressure sensors (4 – 20 mA)


  • Geislinger Analytics Platform: Cloud-based online monitoring platform of torsional vibrations and permanent measurements allowing for predictive analysis and anomaly detection.
  • Misfiring (free-end) Monitoring: If a cylinder misfires, the alarm signal can be used as a warning to reduce the engine load or to disengage a clutch to avoid excessive vibration levels and further subsequent damage.
  • Crankshaft stress or intermediate shaft stress monitoring: Monitoring a critical order range of the vibratory angle at the free end of the crankshaft can be used for detecting dangerous operating conditions for crankshafts or other driveline components.
  • Damper Monitoring: Monitoring the damper twist ensures trouble-free operation of Geislinger Dampers.
  • Coupling Monitoring: Static and dynamic twists are calculated; both the power transmitted and torque are displayed.
  • Shaft and Power Monitoring: Engine output and shaft line vibrations are displayed to optimize fuel consumption and increase the propulsion safety level.
  • Oil Pressure and Temperature Monitoring: Sensors inside the Geislinger oil supply are available as an option for 2-stroke applications.
  • Multiple Product Monitoring: Multiple Geislinger products can be monitored on one or several engines.