Conical gears, also known as bevel gears or worm gears, are used for power transmission between intersecting shafts. Compared to cylindrical gears, they can alter the direction of 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, but produce 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 with higher gear 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 smooth, with power transmission capability up to 3,700 kW and peripheral speed exceeding 40 m/s.