Abstract
Surface temperature is considered as an integrated index which is a combined result of not only the load and dimension at the contact point but also the sliding velocity, rolling velocity, surface roughness, lubrication condition and etc.. So, the surface durability of such as roller and gear will be evaluated more exactly and simply by use of the surface temperature than Hertzian stress. In this research, the surface temperatures of rollers in different rolling and sliding conditions are measured with a thermocouple. The effects of the load, rolling velocity and sliding velocity on the surface temperature are clarified. An experimental formula, which expresses a linear relationship between the surface temperature and the P0.86 Vs1.31 Vm-0.83 value, is presented to calculate the surface temperature. The application of this formula to the temperature measurement resuIts of gear confirmed the formula to be effective as well to the gear tooth surface temperature calculation.
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