Gears play a crucial role in the elevator industry. Gears also played a crucial role in the development of the early elevator, which was raised and lowered mechanically in a vertical shaft. Today, the function of the elevator remains the same but the technology and precision of its parts and components have changed dramatically. Gears are an integral component of low speed elevators. Elevators use worm gear reducer system along with a motor to move people from one floor to another. Middle and low speed gears effectively check the revolution of motors before transferring power to the rope sheave. The other important gear used in the elevator industry is helical gears, which is considered a major accomplishment in elevator technologies.