Shaft analysis for strength

Let us carry out the analysis of the shaft for strength if torque at the pinion shaft T_p = 370 N·m and from the previous analysis we have that turning (tangential) force F_t = 2467 N; F_r = 898 N; F_a = 346.7 N; d_g = 300 mm; d = 55 mm (the shaft diameter under the gear), and from the sketch layout a = 63 mm; b = 63 mm; c = 164 mm.

10.1. Select the material of the shaft.

The main material of shafts is medium-carbon or alloy steels of grade Steel 0.4C (40), Steel 0.45C (45), Steel 0.4C-Cr (40X) and others with hardness H ≥ 200 BHN.

Mechanical characteristics of steels are given in table 10.1.

Table 10.1