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
dive for the operating conditions.