While choosing gears based on use, what is to be considered, the bending strength or the surface durability?
(Ans) It is recommended to consider both bending strength and surface durability. However, in some exceptional cases the bending strength is more vital. Such cases are: i) the frequency of gear use is limited ii) gears are manually operated without the help of electricity iii) Gears are meshed at low speeds. The final decision has to be taken by the design engineer.
