Gears: determining tooth loads and strength calculations

In the first part, we'll give the relationships that enable us to calculate the loads on the teeth and their components for the different types of gears: parallel, concurrent and worm.

The second part, gear strength calculations, mainly concerns parallel gears. A large number of ISO standards are currently published concerning these calculations. In this section, we'll look at calculations for surface and fracture damage. After a reminder of the calculation bases of the ISO standards, we will indicate a simplified method, valid for all industrial gears, which has a very good correspondence with the often complex general standards.