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

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

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