Iso Tr 14179-2 Pdf

It addresses – essentially, how much power a gear unit can transmit without exceeding permissible lubricant or component temperatures.

Without this document, you are essentially guessing the thermal safety margin of your gear drive. Exceeding the thermal capacity leads to:

In gear design, "thermal capacity" is often the limiting factor rather than mechanical strength. A gear unit might be mechanically strong enough to handle a massive load, but if it cannot dissipate the heat generated by that load, the lubricant will degrade, leading to: Metal-to-metal contact as the oil thins out.

Creative engineers combine Part 2 with simple lumped-capacitance thermal models (using the housing’s thermal mass) to simulate temperature rise over time. The data tables provide the steady-state asymptote for that model.