youtube.com/playlist?list=PLhXS5IyZEBjgCKClA_KUoaLтАж Manufacturing Process | Gear Box | Explained | PPT | ENGINEERING STUDY MATERIALSEngineering Study MaterialsGear Manufacturing Process | Gear Box | Explained | PPT | ENGINEERING STUDY MATERIALS A gear is a rotating machine part having cut teeth, or in the case of a cogwheel, inserted teeth (called cogs), which mesh with another toothed part to transmit torque. Geared devices can change the speed, torque, and direction of a power source. Gears almost always produce a change in torque, creating a mechanical advantage, through their gear ratio, and thus may be considered a simple machine. The teeth on the two meshing gears all have the same shape.The gears in a transmission are analogous to the wheels in a crossed, belt pulley system. An advantage of gears is that the teeth of a gear prevent slippage. Gearbox functions like a