Conical gears, also known as bevel gears, are used for power transmission between intersecting shafts. Compared to cylindrical gears, they can alter the direction of transmission. Single-stage gear ratios can reach up to 6, with some as high as 8.

1. Straight and helical bevel gear designs, manufacturing, and installation are relatively simple, though 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 m/s. Helical bevel gear drives operate smoothly, with high load-bearing capacity, but are more difficult to manufacture and 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 stable, capable of transmitting power up to 3,700 kW and peripheral speeds exceeding 40 m/s.