The report provides coefficients for how heat leaves the system via: Air blowing over the gear housing. Radiation: Heat emitting from the surface. Conduction: Heat moving through the foundation or mounting. ISO/TR 14179-1 vs. 14179-2
You need both parts. Part 1 tells you how hot the oil will get. Part 2 tells you how much power you can safely transfer given that heat. iso tr 14179-2 pdf
A search for "ISO TR 14179-2 pdf free download" often leads to illegal file-sharing sites, university uploads, or outdated scanned copies. Using these is risky because: The report provides coefficients for how heat leaves
The final output is a (Power vs. Speed). If your application exceeds this curve, you must add external cooling. you must add external cooling.