In simple terms, a pinion is a small gear that works together with a larger gear. Gears are like toothed wheels, and they’re often used in machines to transfer motion or power. The pinion is the smaller of the two gears, and it connects with the larger gear, which is often called a “gear” or “crown gear.” When the pinion and gear mesh together, the rotation of one gear causes the other to turn as well. This is commonly used in various machines and mechanisms to transmit power, change the direction of rotation, or control the speed of rotation. For example, in a clock, you might find a pinion and gear system working together to move the clock hands. In a car’s steering system, gears, including a pinion, help you turn the wheels when you steer.
So, in short, a pinion is a small gear that collaborates with a larger gear to make things move or operate.
