This type of spiral bevel gear set is commonly used in axle products, mostly in rear-wheel-drive passenger cars, SUVs and commercial vehicles. Some electric buses will also be used. The design and processing of this kind of gear are more complicated. At present, it is mainly made by Gleason and Oerlikon. This kind of gear is divided into two types: equal-height teeth and tapered teeth. It has many advantages such as high torque transmission, smooth transmission, and good NVH performance. Because it has the characteristics of offset distance, it can be considered on the ground clearance of the vehicle to improve the pass ability of the vehicle.