Spiral bevel gears are mechanical components used to transmit power between shafts that are at right angles to each other. They have a conical shape with teeth that are angled in a spiral pattern, allowing for smoother and quieter operation compared to straight bevel gears. This design helps in distributing the load over a larger area, which enhances durability and efficiency. These gears are commonly found in various applications, including automobiles, industrial machinery, and aerospace systems. Their ability to handle high torque and provide precise motion makes them essential in many engineering designs where space and performance are critical.