Monitoring a Bearing Damage in a Gearbox Using On-line Systems and HD Technology

Christer Larsson, Trainer SPM Academy, SPM Instrument AB


In this presentation we will introduce the concept of HD Technology and how it has been used to detect a bearing damage in a slow rotating bearing in a gearbox. The presentation will describe the spall process in a bearing and suitable techniques for early damage detection. It will also cover choice of transducer type for low RPM bearing damage detection. The case story contains a number of measuring challenges:
-Low RPM (52 RPM)
-Limited measuring time window (triggered measurements)
-Planned maintenance stops only once a year
-Several signal sources


Christer Larsson, born 1968 in Sweden, has a work background as a mechanical engineer working for car manufacturer Volvo Cars, electric utility provider Eon ES, and ABB Motor & Generator Services. Since November 2015, he is the Head of SPM Academy training at SPM Instrument. Christer has thirty years of experience in condition monitoring, including an extensive understanding of machine tooling equipment and high precision spindles. He has done vibration and electrical motor diagnoses on-shore, off-shore, underground, and in the air, for a wide range of machines. He is a Mobius Institute instructor since 2005 and is CAT IV certified.