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

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

2. Curved-tooth bevel gears feature smooth transmission, low noise, and high load-bearing capacity, suitable for high-speed, heavy-load applications. The operation of curved-tooth bevel gears is smooth, capable of transmitting power up to 3,700 kW and peripheral speeds exceeding 40 m/s.