Problem avoided

A raw mill at a cement manufacturer's UK site has maintained vital production throughput, due to the swift response of a diagnostic monitoring and back-up service from Siemens Mechanical Drives.

The company had a programme of pro-active maintenance in place and opted for a condition monitoring service from Siemens for the drive unit running the raw mill. The Siemens Combiflex DMGH is 2.5m tall by 1m wide. At its heart was a Flender girth gear. The monitoring service ensured regular checks were made on bearings, vibration analysis and wear characteristics.

During a routine check the early stages of potential bearing failure were found and shutdown was scheduled.

A spare gear unit kept on site was installed; the other unit was returned to Siemens for bearing and seal change before being returned to site.