Gears are an indispensable component of several machines and motors. They assist in jacking up the torque output by enabling gear reduction and adjusting the direction of shaft rotation to the back wheels of automobiles. Two or more gears operating together one behind the other is called a gearbox. There are varied types of gears like the spur gears, helical gears, bevel gears, and worm gears etc. and each one of them has an important role to play in the varied industrial applications.