Straight bevel gears are mechanical components used to transmit power between shafts that are at right angles to each other. They have straight teeth that are cut along the cone's surface, allowing for efficient torque transfer. These gears are commonly found in applications like automobiles and industrial machinery. The design of straight bevel gears allows for smooth operation, but they can produce noise and vibration at high speeds. They are typically made from materials like steel or plastic and are available in various sizes to suit different applications. Proper alignment and installation are crucial for optimal performance.