Gear design involves creating gears, which are mechanical components that transmit motion and torque between machines. Gears come in various shapes and sizes, with the most common types being spur gears, bevel gears, and worm gears. The design process considers factors like gear ratio, material strength, and load capacity to ensure efficient performance. In gear design, engineers use principles of mechanical engineering and mathematics to calculate dimensions and tooth profiles. Proper gear design is crucial for applications in industries such as automotive, aerospace, and manufacturing, where reliable movement and power transfer are essential for machinery and equipment.