The Development of a Practical Thermal Rating Method for Enclosed Gear Drives


This thermal rating method balances the sum of the load-independent losses and the load-dependent losses against the heat dissipation capability of the gear case. Empirical factors are determined which calibrate the calculations against the test results for assembled gear reducers. The results of this calculation method are compared to the test results from 251 gear reducer tests. In addition, since losses are calculated, this method can be used to calculate the efficiency of the gear drive for the operating conditions.
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