An interactive tutorial on detecting unbalance and performing single-plane balancing

Jason Tranter, Mobius Institute


Every vibration analyst must be able to confidently diagnose unbalance, whether the machine is vertically or horizontally oriented, and whether the shaft is supported by bearings or overhung. And every vibration analyst should also understand how to perform single-plane balancing. This presentation will provide an explanation of the diagnostic techniques and then go through an interactive presentation on how to use a polar plot to determine the best size and location of the trial weights, and the final location for the balance weight. Yes, it is
quite likely that your vibration analyzer can guide you through the balancing process, however, that is a sure way to make mistakes. It is critically important that you can watch the vibration readings, look at a polar plot, and determine the correct balance solution. As with all Mobius presentations, it will be very graphical and understandable. There will also be opportunities to ask questions.


Jason Tranter (BE Hons) has been involved with condition monitoring and vibration analysis since 1984. In 1986 Jason formed his Australian company, ARGO, which was heavily involved in vibration monitoring and systems development. In 1990 he sold that company and the “ALERT” product line to DLI Engineering in Seattle (now AzimaDLI). Jason was in charge of product development, and later in charge of vibration products. In 1996 Jason returned to Australia and for the next three years he developed the ExpertALERT (EAV), DCX data collector, and DCX Online products for DLI Engineering. In 1999 Jason formed Mobius and began the development of the iLearnInteractive series of computer-based products for vibration and alignment training and analysis, including iLearnVibration, iLearnAlignment and Interpreter. These products have been used by thousands of people in over 90 countries to learn and become certified. Mobius was awarded the Victorian Regional Exporter of the year and was a finalist in the Australian Export Awards for 2007 and 2008. In 2005 Jason formed the “Mobius Institute” for expanded distance learning and public courses, and courses that comply with ISO and ASNT standards for certification. Mobius has offices in Australia, the United States and Costa Rica, and training centers in over 40 countries. In 2010 Jason formed the Mobius Institute Board of Certification, a not-for-profit organization to make it possible for vibration analysts anywhere in the world to achieve certification per ISO 18436-1. Jason has delivered technical papers around the world, and has had articles published in numerous international magazines and journals.