2S8: High definition gearbox monitoring

Tim Sundstrom, Manager of Strategic Sales & Application, SPM Instrument AB


Gearbox Condition Monitoring has been regarded as a challenging task. The many signal sources from gear-meshes, bearing signals and other process related signals can be hard to interpret. By applying the recently developed High Definition Algorithms to gearbox vibration monitoring it’s possible to reveal the condition of gears and bearings even in complex gearboxes.

The presentation will cover real world gearbox examples where High Definition Technology is combined with Time Synchronous Averaging, Pseudo Tachometer and HD Order Tracking to produce crisp and clear results. With these tools it’s possible to detect tooth surface damages and cracks also in intermediate shafts in a gearbox. The results are visualized with the so called “circular plot” tools that gives an intuitive view of gear condition.


Tim Sundström, born 1964 in Sweden, has a M.Sc. degree in Applied Physics and Electrical Engineering from Linköping University, Sweden. For over twenty years, he has been specializing in electronics development and has held managerial positions in the field since 1992. In 2001, he joined SPM Instrument as head of Research and Development, where he has been deeply involved in SPM HD development and field evaluations.