3S5: Case Study: Low Speed Bearing Lubrication, Monitoring & Reliability

Peter Todd , Reliability Engineer, ARIA


Spherical roller bearings in plummer blocks are used widely in larger slow speed applications such as conveyor main pulleys bearings and slow speed drive shafts. Usually when you look at the loads on these bearings and their L10 life specification, it is easy to make the conclusion that they should achieve very high levels of reliability but this is often not the case. If you go to one plant, site people often have trouble remembering the last slow speed bearing failure and then you can go to another site with similar equipment, product and environmental conditions and slow speed bearing failures are a painful ongoing regular occurrence. This presentation will give the reasons for tise difference in reliability performance and discuss the options for condition monitoring and elimination of the dominant failure modes.


Peter is a Mechanical Engineer with an extensive background Asset Management and Reliability Engineering. He worked for the Steelworks in Wollongong for over 27 years, for Shell Services for 3 year, for SIRF Roundtables for 12 years as the NSW Industrial Maintenance Roundtable Facilitator and now works freelance. His experience includes maintenance management, reliability engineering, maintenance strategy, machine condition monitoring and RCA failure investigations. He has experience in a wide range of equipment and processes from raw materials handling to turbo machinery, with bearings as a specialty. Peter’s specialist areas are in Condition Monitoring, Failure Analysis and Reliability Engineering.