Scrapping on Bearings

[Daren Samy]

I have seen Turbine maintenance guys scrapping the bearings (supposedly) for oil wedge. Is there some systematic calculations for scrapping or it is just operating experience among turbine maintenance gurus ? I have worked on large pumps and motors. We donot do it and we rely on designer's hydrodynamic calculations of bearing and donot play with babbit surface.

Daren!

 

[3DDave]

I suppose you mean scraping, as in the removal of material, rather than scrapping, the discard of unwanted items?

It depends on what the result is. Here's a video of scraping used to extend the use of the bearing:

https://youtu.be/nxckVqdPVTA?t=534

 

[Daren Samy]

Thanks for input

Daren!