A bevel gear is a type of gear used to transmit power between shafts that are at an angle to each other, typically 90 degrees. These gears have conical shapes, allowing them to mesh smoothly and efficiently. They are commonly found in various machinery, including automobiles, industrial equipment, and hand tools. There are different types of bevel gears, such as straight bevel gears and spiral bevel gears, each designed for specific applications. The choice of bevel gear affects the performance, efficiency, and noise levels of the machinery in which they are used. Proper selection and installation are crucial for optimal operation.