A bevel gear is a gear with a conical shape that is used to transmit torque between intersecting shafts, usually at a 90-degree angle. Bevel gears are used in pairs to form a bevel gearbox. There are various designs, including straight, spiral-cut, and hypoid designs. The type of toothing affects the operating behavior, noise level, and load capacity. Bevel gears are used in many technical applications requiring a compact change in the direction of power transmission Transmission The function of a vehicle transmission is to adjust the torque and speed, and to transfer engine power to the drive wheels. , such as in differential gears, machine tools, marine drives, and test benches.