General aspects of speed increaser gearboxes

This study aims to present the general aspects of the speed increaser gearboxes. The second part of this study will focus on the identification of the possibility to replace the special materials used for gearing execution of the speed increaser gearboxes with materials having inferior mechanical characteristics. Gearing execution from 18CrNiMo7-6 material is expensive in terms of price and applied execution technology. Also to obtain the mechanical characteristics for these materials is necessary to apply some special expensive heat treatments as carburizing heat treatment. We will replace this material with C45 steel for gear and pinion execution, we will apply an induction hardening heat treatment for getting a surface teeth hardness HRC 45 an for the increase the safety for tooth root stress coefficient we will apply a supplementary operation consisting in a tooth root shoot peening. (paper)