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we are suffering our existing tachometers reliability which are equipped at general purpose steam turbines, these analog tachometers fail within two weeks, we established communication with the OEM and they recommended to upgrade to electronic tachometer which is required a major change to be...

Did you observe any change in bearing temperature after using the non-metallic oil rings?

Yes process temperature is 350 degC, bearing temperature is around 70 C and during summer it teaches to 90 C

Thanks JJpellin, which LuyTex grade you are using C3xx? It worth to highlight that we are facing this issue ( black oil) at hot pumps ( operating temperature) 350 deg.C with ISO 68 oil

Thanks tug, is there any standard or OEM supports the plastic oil rings? And what is the material specification to avoid chemical reaction with oil?

Thanks “dik”, Oil turns to black color

We are struggling with many pumps that oil discolored with brass particles at overhung pumps with 3600 rpm speed Elemental analysis declared that oil rings ( Bronze)are the main reason for these oil discoloration, and when we opened the inspections plugs at bearing housing NDE we observed 2 oil...