Conical gears, also known as bevel gears or helical gears, are used for power transmission between intersecting shafts. Compared to cylindrical gears, they can change the direction of power transmission. The single-stage transmission ratio can reach up to 6, and even up to 8.

1. Straight and helical bevel gear designs, manufacturing, and installation are relatively simple, though they generate more noise and are suitable for low-speed transmission (less than 5 m/s); the power transmission of straight bevel gear drives can reach 370 kW, with a peripheral speed of 5 meters per second. Helical bevel gear drives operate smoothly, with high gear load-bearing capacity, but are more difficult to manufacture and less commonly used.

2. The helical bevel gears feature smooth transmission, low noise, and high load-bearing capacity, making them ideal for high-speed and heavy-load applications. The helical bevel gear transmission operates smoothly, capable of transferring power up to 3,700 kW and a peripheral speed of over 40 meters per second.