Abstract
The paper presents the analytical fatigue calculation compared to the numerical fatigue analysis for the primary shaft of a manual gearbox whose design is similar with the Land Rover R380 gearbox. Based on the real loads of the shaft, the loading scheme is established, the reactions are calculated and the bending diagrams are drawn for all the gears of the gearbox. For the maximum load case of the shaft it is presented the fatigue calculation for the stress concentrators in the vicinity of the bearing from inside of the gearbox housing.
Keywords: fatigue calculation, numerical fatigue analysis, stress concentrators.