My main concern with the air in the oil is that the seals that we use on these bearing assemblies are Kalsi seals.
If you arent familiar with them basically they allow a certain amount of leakage of oil to maintain the seal while the tool rotates.
I think that the entrained air is helping to...
Thanks Ted. I did a bit of searching. The company that makes the unit is from Japan they are called Opus System
http://www.opussystem.com/
Web site isn't too bad and they have a catalogue on there. It looks as though they have one that is in the size range I was looking for. Hopefully it isn't...
The temp is ambient, about 15 - 20 degrees C. Its in a shop.
Currently the oil that is used is in a barrel. We have wheeled carts that the barrels are placed on. The transfer pump is then setup through the standard bung on top of the barrel. The return line is then setup through the other bung...
Letting it sit isn't really an option turn around on the tools is pretty quick. Using a dedicated reservoir might be an option to consider.
We have a vacuum pump that someone bought for R&D but no one used I might try that.
That is basically the scenario right now. Imagine an annular space sealed on both ends. Oil enters near the bottom on one end and flows out at the high side of the space on the opposite end.
I am more concerned with the air that is entrained as bubbles within the oil itself.
I am mostly just looking for some good ideas on how to remove entrained air from oil while filling a bearing assembly.
The application is downhole oilfield tools.
Currently tools are filled with three different types of oil. Their viscosities range from 46-460 cSt @ 40 degrees celsius...
