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Thanks for your response dinjin. I understand the reason for a profile offset, but what is the correction factor doing?

I deal with European OEMs quite often and was wondering if anyone knows the difference between these three terms related to gearing specs: Profile Shift Profile Offset Correction Factor In the US we use "Profile Shift" to indicate how much the gear is to but cut under or over pitch diameter.

Oops

I deal with European OEMs quite often and was wondering if anyone knows the difference between these three terms related to gearing specs: Profile Shift Profile Offset Correction Factor In the US we use "Profile Shift" to indicate how much the gear is to but cut under or over pitch diameter.

I have not done any thermal relieving calculations. I did some calcs based on the expansion of the oil to determine how much to fill the vessel to allow it to expand to fill the void. The initial conditions are ambient or atmospheric pressure and ambient temperature (70F). I'm heating to 400F...

Already tried...The Chemists at Shell have no clue. Thanks anyway.

The fluid is Shell Thermia Oil C, which is a heat transfer mineral oil.

Anyone know how to calculate the pressure increase due to temperature increase for a liquid in a closed, sealed system? I have the formula: CoTE x temperature increase x copmpressibility, but I can't get the compressibility factor for the liquid I'm using.