Calculation of the efficiency of worm gear drives

This paper presents a physically grounded calculation method to determine the efficiency of worm gear drives. This computation is based on the MEGT tribological simulation, which can determine the local tooth friction coefficients (1). In their knowledge the other power losses such as the bearings, oil churnings and seals power losses can also be calculated. So in the next step the estimation of the efficiency of the gear box is possible. After the description of this complex analysis their validation with measurements and the short investigation of the power loss sources are shown.