Damaged bearing cage.
Damaged bearing cage.

Bearing cage damage in vertical roller mill

This case study deals with the detection of a damaged bearing cage in a gearbox driving a vertical roller mill in the Hoang Mai cement plant in Vietnam.

Since 2015, an Intellinova Compact online system monitors the mechanical condition of the gearbox using HD condition monitoring technology. Some time after the system was installed, the first signs of damage appeared. Measurement with SPM HD showed increasing shock pulse levels that indicated problems on a bearing cage on the output pinion shaft. On removal of the bearing from the shaft, broken bearing cage parts were found.

Thanks to the prewarning time of about four months, it was possible to replace the bearing during a planned shutdown, thus saving the plant an estimated USD 270,000.

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Case Study
Filename/description Language Size Modified
CS_026B_Vertical_rolling_mill_HoangMai_Vn_B.pdf English (United Kingdom) 20 MB 3/15/2021
This case study deals with the detection of a damaged bearing cage in a gearbox driving a vertical roller mill in the Hoang Mai cement plant in Vietnam.

HD technologies

Condition monitoring with High Definition (HD) technologies provides extremely long pre-warning times, thus maximizing the planning horizon for maintenance and repairs.

Intellinova family

The Intellinova online systems combine HD measurement technologies with high-performance digital hardware to ensure the earliest possible warning of deteriorating mechanical condition.

SPM in the cement industry

SPM has been involved in the cement industry for a number of years and we continue to contribute to improved plant reliability for main manufacturers around the world.