What are the advantages of helical gear vs. spur gear

Advantages of helical gear:

1. Helical gear is in the state of meshing all the time, there is no working blind area, so as to ensure the uniformity of the speed, the result is that the speed is stable.

2. Because of the error in the manufacturing process, the instantaneous speed of the spur gear is variable, and the speed is uneven due to the error when the gear is meshed.

3. Helical gear transmission is stable, low noise, axial force; Spur gear transmission is not smooth, noise is big, and no axial force, and the teeth is easy to break.

4. Contact ratio is bigger: the increase of the contact ratio improves the bearing capacity of the gear. Thus, the service life of the gear is prolonged. The degree of contact mainly depends on the meshing time, while the meshing time of helical gear is long, the contact area is large, and the stress is reduced. And make the transmission stable, and increase its economy.